Fix EsLint Brackets (error markup 'const').

node_modules/eslint/lib/api.js

@@ -0,0 +1,28 @@
+/**
+ * @fileoverview Expose out ESLint and CLI to require.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+const Linter = require("./linter");
+
+module.exports = {
+    Linter,
+    CLIEngine: require("./cli-engine"),
+    RuleTester: require("./testers/rule-tester"),
+    SourceCode: require("./util/source-code")
+};
+
+let deprecatedLinterInstance = null;
+
+Object.defineProperty(module.exports, "linter", {
+    enumerable: false,
+    get() {
+        if (!deprecatedLinterInstance) {
+            deprecatedLinterInstance = new Linter();
+        }
+
+        return deprecatedLinterInstance;
+    }
+});

node_modules/eslint/lib/cli-engine.js

@@ -0,0 +1,792 @@
+/**
+ * @fileoverview Main CLI object.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+/*
+ * The CLI object should *not* call process.exit() directly. It should only return
+ * exit codes. This allows other programs to use the CLI object and still control
+ * when the program exits.
+ */
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("fs"),
+    path = require("path"),
+    defaultOptions = require("../conf/default-cli-options"),
+    Linter = require("./linter"),
+    lodash = require("lodash"),
+    IgnoredPaths = require("./ignored-paths"),
+    Config = require("./config"),
+    ConfigOps = require("./config/config-ops"),
+    LintResultCache = require("./util/lint-result-cache"),
+    globUtils = require("./util/glob-utils"),
+    validator = require("./config/config-validator"),
+    hash = require("./util/hash"),
+    ModuleResolver = require("./util/module-resolver"),
+    naming = require("./util/naming"),
+    pkg = require("../package.json");
+
+const debug = require("debug")("eslint:cli-engine");
+const resolver = new ModuleResolver();
+const validFixTypes = new Set(["problem", "suggestion", "layout"]);
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/**
+ * The options to configure a CLI engine with.
+ * @typedef {Object} CLIEngineOptions
+ * @property {boolean} allowInlineConfig Enable or disable inline configuration comments.
+ * @property {Object} baseConfig Base config object, extended by all configs used with this CLIEngine instance
+ * @property {boolean} cache Enable result caching.
+ * @property {string} cacheLocation The cache file to use instead of .eslintcache.
+ * @property {string} configFile The configuration file to use.
+ * @property {string} cwd The value to use for the current working directory.
+ * @property {string[]} envs An array of environments to load.
+ * @property {string[]} extensions An array of file extensions to check.
+ * @property {boolean|Function} fix Execute in autofix mode. If a function, should return a boolean.
+ * @property {string[]} fixTypes Array of rule types to apply fixes for.
+ * @property {string[]} globals An array of global variables to declare.
+ * @property {boolean} ignore False disables use of .eslintignore.
+ * @property {string} ignorePath The ignore file to use instead of .eslintignore.
+ * @property {string} ignorePattern A glob pattern of files to ignore.
+ * @property {boolean} useEslintrc False disables looking for .eslintrc
+ * @property {string} parser The name of the parser to use.
+ * @property {Object} parserOptions An object of parserOption settings to use.
+ * @property {string[]} plugins An array of plugins to load.
+ * @property {Object<string,*>} rules An object of rules to use.
+ * @property {string[]} rulePaths An array of directories to load custom rules from.
+ * @property {boolean} reportUnusedDisableDirectives `true` adds reports for unused eslint-disable directives
+ */
+
+/**
+ * A linting warning or error.
+ * @typedef {Object} LintMessage
+ * @property {string} message The message to display to the user.
+ */
+
+/**
+ * A linting result.
+ * @typedef {Object} LintResult
+ * @property {string} filePath The path to the file that was linted.
+ * @property {LintMessage[]} messages All of the messages for the result.
+ * @property {number} errorCount Number of errors for the result.
+ * @property {number} warningCount Number of warnings for the result.
+ * @property {number} fixableErrorCount Number of fixable errors for the result.
+ * @property {number} fixableWarningCount Number of fixable warnings for the result.
+ * @property {string=} [source] The source code of the file that was linted.
+ * @property {string=} [output] The source code of the file that was linted, with as many fixes applied as possible.
+ */
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines if each fix type in an array is supported by ESLint and throws
+ * an error if not.
+ * @param {string[]} fixTypes An array of fix types to check.
+ * @returns {void}
+ * @throws {Error} If an invalid fix type is found.
+ */
+function validateFixTypes(fixTypes) {
+    for (const fixType of fixTypes) {
+        if (!validFixTypes.has(fixType)) {
+            throw new Error(`Invalid fix type "${fixType}" found.`);
+        }
+    }
+}
+
+/**
+ * It will calculate the error and warning count for collection of messages per file
+ * @param {Object[]} messages - Collection of messages
+ * @returns {Object} Contains the stats
+ * @private
+ */
+function calculateStatsPerFile(messages) {
+    return messages.reduce((stat, message) => {
+        if (message.fatal || message.severity === 2) {
+            stat.errorCount++;
+            if (message.fix) {
+                stat.fixableErrorCount++;
+            }
+        } else {
+            stat.warningCount++;
+            if (message.fix) {
+                stat.fixableWarningCount++;
+            }
+        }
+        return stat;
+    }, {
+        errorCount: 0,
+        warningCount: 0,
+        fixableErrorCount: 0,
+        fixableWarningCount: 0
+    });
+}
+
+/**
+ * It will calculate the error and warning count for collection of results from all files
+ * @param {Object[]} results - Collection of messages from all the files
+ * @returns {Object} Contains the stats
+ * @private
+ */
+function calculateStatsPerRun(results) {
+    return results.reduce((stat, result) => {
+        stat.errorCount += result.errorCount;
+        stat.warningCount += result.warningCount;
+        stat.fixableErrorCount += result.fixableErrorCount;
+        stat.fixableWarningCount += result.fixableWarningCount;
+        return stat;
+    }, {
+        errorCount: 0,
+        warningCount: 0,
+        fixableErrorCount: 0,
+        fixableWarningCount: 0
+    });
+}
+
+/**
+ * Processes an source code using ESLint.
+ * @param {string} text The source code to check.
+ * @param {Object} configHelper The configuration options for ESLint.
+ * @param {string} filename An optional string representing the texts filename.
+ * @param {boolean|Function} fix Indicates if fixes should be processed.
+ * @param {boolean} allowInlineConfig Allow/ignore comments that change config.
+ * @param {boolean} reportUnusedDisableDirectives Allow/ignore comments that change config.
+ * @param {Linter} linter Linter context
+ * @returns {{rules: LintResult, config: Object}} The results for linting on this text and the fully-resolved config for it.
+ * @private
+ */
+function processText(text, configHelper, filename, fix, allowInlineConfig, reportUnusedDisableDirectives, linter) {
+    let filePath,
+        fileExtension,
+        processor;
+
+    if (filename) {
+        filePath = path.resolve(filename);
+        fileExtension = path.extname(filename);
+    }
+
+    const effectiveFilename = filename || "<text>";
+
+    debug(`Linting ${effectiveFilename}`);
+    const config = configHelper.getConfig(filePath);
+
+    if (config.plugins) {
+        configHelper.plugins.loadAll(config.plugins);
+    }
+
+    const loadedPlugins = configHelper.plugins.getAll();
+
+    for (const plugin in loadedPlugins) {
+        if (loadedPlugins[plugin].processors && Object.keys(loadedPlugins[plugin].processors).indexOf(fileExtension) >= 0) {
+            processor = loadedPlugins[plugin].processors[fileExtension];
+            break;
+        }
+    }
+
+    const autofixingEnabled = typeof fix !== "undefined" && (!processor || processor.supportsAutofix);
+    const fixedResult = linter.verifyAndFix(text, config, {
+        filename: effectiveFilename,
+        allowInlineConfig,
+        reportUnusedDisableDirectives,
+        fix: !!autofixingEnabled && fix,
+        preprocess: processor && (rawText => processor.preprocess(rawText, effectiveFilename)),
+        postprocess: processor && (problemLists => processor.postprocess(problemLists, effectiveFilename))
+    });
+    const stats = calculateStatsPerFile(fixedResult.messages);
+
+    const result = {
+        filePath: effectiveFilename,
+        messages: fixedResult.messages,
+        errorCount: stats.errorCount,
+        warningCount: stats.warningCount,
+        fixableErrorCount: stats.fixableErrorCount,
+        fixableWarningCount: stats.fixableWarningCount
+    };
+
+    if (fixedResult.fixed) {
+        result.output = fixedResult.output;
+    }
+
+    if (result.errorCount + result.warningCount > 0 && typeof result.output === "undefined") {
+        result.source = text;
+    }
+
+    return { result, config };
+}
+
+/**
+ * Processes an individual file using ESLint. Files used here are known to
+ * exist, so no need to check that here.
+ * @param {string} filename The filename of the file being checked.
+ * @param {Object} configHelper The configuration options for ESLint.
+ * @param {Object} options The CLIEngine options object.
+ * @param {Linter} linter Linter context
+ * @returns {{rules: LintResult, config: Object}} The results for linting on this text and the fully-resolved config for it.
+ * @private
+ */
+function processFile(filename, configHelper, options, linter) {
+
+    const text = fs.readFileSync(path.resolve(filename), "utf8");
+
+    return processText(
+        text,
+        configHelper,
+        filename,
+        options.fix,
+        options.allowInlineConfig,
+        options.reportUnusedDisableDirectives,
+        linter
+    );
+}
+
+/**
+ * Returns result with warning by ignore settings
+ * @param {string} filePath - File path of checked code
+ * @param {string} baseDir  - Absolute path of base directory
+ * @returns {LintResult} Result with single warning
+ * @private
+ */
+function createIgnoreResult(filePath, baseDir) {
+    let message;
+    const isHidden = /^\./.test(path.basename(filePath));
+    const isInNodeModules = baseDir && path.relative(baseDir, filePath).startsWith("node_modules");
+    const isInBowerComponents = baseDir && path.relative(baseDir, filePath).startsWith("bower_components");
+
+    if (isHidden) {
+        message = "File ignored by default.  Use a negated ignore pattern (like \"--ignore-pattern '!<relative/path/to/filename>'\") to override.";
+    } else if (isInNodeModules) {
+        message = "File ignored by default. Use \"--ignore-pattern '!node_modules/*'\" to override.";
+    } else if (isInBowerComponents) {
+        message = "File ignored by default. Use \"--ignore-pattern '!bower_components/*'\" to override.";
+    } else {
+        message = "File ignored because of a matching ignore pattern. Use \"--no-ignore\" to override.";
+    }
+
+    return {
+        filePath: path.resolve(filePath),
+        messages: [
+            {
+                fatal: false,
+                severity: 1,
+                message
+            }
+        ],
+        errorCount: 0,
+        warningCount: 1,
+        fixableErrorCount: 0,
+        fixableWarningCount: 0
+    };
+}
+
+/**
+ * Produces rule warnings (i.e. deprecation) from configured rules
+ * @param {(Array<string>|Set<string>)} usedRules - Rules configured
+ * @param {Map} loadedRules - Map of loaded rules
+ * @returns {Array<Object>} Contains rule warnings
+ * @private
+ */
+function createRuleDeprecationWarnings(usedRules, loadedRules) {
+    const usedDeprecatedRules = [];
+
+    usedRules.forEach(name => {
+        const loadedRule = loadedRules.get(name);
+
+        if (loadedRule && loadedRule.meta && loadedRule.meta.deprecated) {
+            const deprecatedRule = { ruleId: name };
+            const replacedBy = lodash.get(loadedRule, "meta.replacedBy", []);
+
+            if (replacedBy.every(newRule => lodash.isString(newRule))) {
+                deprecatedRule.replacedBy = replacedBy;
+            }
+
+            usedDeprecatedRules.push(deprecatedRule);
+        }
+    });
+
+    return usedDeprecatedRules;
+}
+
+/**
+ * Checks if the given message is an error message.
+ * @param {Object} message The message to check.
+ * @returns {boolean} Whether or not the message is an error message.
+ * @private
+ */
+function isErrorMessage(message) {
+    return message.severity === 2;
+}
+
+
+/**
+ * return the cacheFile to be used by eslint, based on whether the provided parameter is
+ * a directory or looks like a directory (ends in `path.sep`), in which case the file
+ * name will be the `cacheFile/.cache_hashOfCWD`
+ *
+ * if cacheFile points to a file or looks like a file then in will just use that file
+ *
+ * @param {string} cacheFile The name of file to be used to store the cache
+ * @param {string} cwd Current working directory
+ * @returns {string} the resolved path to the cache file
+ */
+function getCacheFile(cacheFile, cwd) {
+
+    /*
+     * make sure the path separators are normalized for the environment/os
+     * keeping the trailing path separator if present
+     */
+    const normalizedCacheFile = path.normalize(cacheFile);
+
+    const resolvedCacheFile = path.resolve(cwd, normalizedCacheFile);
+    const looksLikeADirectory = normalizedCacheFile.slice(-1) === path.sep;
+
+    /**
+     * return the name for the cache file in case the provided parameter is a directory
+     * @returns {string} the resolved path to the cacheFile
+     */
+    function getCacheFileForDirectory() {
+        return path.join(resolvedCacheFile, `.cache_${hash(cwd)}`);
+    }
+
+    let fileStats;
+
+    try {
+        fileStats = fs.lstatSync(resolvedCacheFile);
+    } catch (ex) {
+        fileStats = null;
+    }
+
+
+    /*
+     * in case the file exists we need to verify if the provided path
+     * is a directory or a file. If it is a directory we want to create a file
+     * inside that directory
+     */
+    if (fileStats) {
+
+        /*
+         * is a directory or is a file, but the original file the user provided
+         * looks like a directory but `path.resolve` removed the `last path.sep`
+         * so we need to still treat this like a directory
+         */
+        if (fileStats.isDirectory() || looksLikeADirectory) {
+            return getCacheFileForDirectory();
+        }
+
+        // is file so just use that file
+        return resolvedCacheFile;
+    }
+
+    /*
+     * here we known the file or directory doesn't exist,
+     * so we will try to infer if its a directory if it looks like a directory
+     * for the current operating system.
+     */
+
+    // if the last character passed is a path separator we assume is a directory
+    if (looksLikeADirectory) {
+        return getCacheFileForDirectory();
+    }
+
+    return resolvedCacheFile;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+class CLIEngine {
+
+    /**
+     * Creates a new instance of the core CLI engine.
+     * @param {CLIEngineOptions} providedOptions The options for this instance.
+     * @constructor
+     */
+    constructor(providedOptions) {
+
+        const options = Object.assign(
+            Object.create(null),
+            defaultOptions,
+            { cwd: process.cwd() },
+            providedOptions
+        );
+
+        /*
+         * if an --ignore-path option is provided, ensure that the ignore
+         * file exists and is not a directory
+         */
+        if (options.ignore && options.ignorePath) {
+            try {
+                if (!fs.statSync(options.ignorePath).isFile()) {
+                    throw new Error(`${options.ignorePath} is not a file`);
+                }
+            } catch (e) {
+                e.message = `Error: Could not load file ${options.ignorePath}\nError: ${e.message}`;
+                throw e;
+            }
+        }
+
+        /**
+         * Stored options for this instance
+         * @type {Object}
+         */
+        this.options = options;
+        this.linter = new Linter();
+
+        // load in additional rules
+        if (this.options.rulePaths) {
+            const cwd = this.options.cwd;
+
+            this.options.rulePaths.forEach(rulesdir => {
+                debug(`Loading rules from ${rulesdir}`);
+                this.linter.rules.load(rulesdir, cwd);
+            });
+        }
+
+        if (this.options.rules && Object.keys(this.options.rules).length) {
+            const loadedRules = this.linter.getRules();
+
+            Object.keys(this.options.rules).forEach(name => {
+                validator.validateRuleOptions(loadedRules.get(name), name, this.options.rules[name], "CLI");
+            });
+        }
+
+        this.config = new Config(this.options, this.linter);
+
+        if (this.options.cache) {
+            const cacheFile = getCacheFile(this.options.cacheLocation || this.options.cacheFile, this.options.cwd);
+
+            /**
+             * Cache used to avoid operating on files that haven't changed since the
+             * last successful execution.
+             * @type {Object}
+             */
+            this._lintResultCache = new LintResultCache(cacheFile, this.config);
+        }
+
+        // setup special filter for fixes
+        if (this.options.fix && this.options.fixTypes && this.options.fixTypes.length > 0) {
+
+            debug(`Using fix types ${this.options.fixTypes}`);
+
+            // throw an error if any invalid fix types are found
+            validateFixTypes(this.options.fixTypes);
+
+            // convert to Set for faster lookup
+            const fixTypes = new Set(this.options.fixTypes);
+
+            // save original value of options.fix in case it's a function
+            const originalFix = (typeof this.options.fix === "function")
+                ? this.options.fix : () => this.options.fix;
+
+            // create a cache of rules (but don't populate until needed)
+            this._rulesCache = null;
+
+            this.options.fix = lintResult => {
+                const rule = this._rulesCache.get(lintResult.ruleId);
+                const matches = rule.meta && fixTypes.has(rule.meta.type);
+
+                return matches && originalFix(lintResult);
+            };
+        }
+
+    }
+
+    getRules() {
+        return this.linter.getRules();
+    }
+
+    /**
+     * Returns results that only contains errors.
+     * @param {LintResult[]} results The results to filter.
+     * @returns {LintResult[]} The filtered results.
+     */
+    static getErrorResults(results) {
+        const filtered = [];
+
+        results.forEach(result => {
+            const filteredMessages = result.messages.filter(isErrorMessage);
+
+            if (filteredMessages.length > 0) {
+                filtered.push(
+                    Object.assign(result, {
+                        messages: filteredMessages,
+                        errorCount: filteredMessages.length,
+                        warningCount: 0,
+                        fixableErrorCount: result.fixableErrorCount,
+                        fixableWarningCount: 0
+                    })
+                );
+            }
+        });
+
+        return filtered;
+    }
+
+    /**
+     * Outputs fixes from the given results to files.
+     * @param {Object} report The report object created by CLIEngine.
+     * @returns {void}
+     */
+    static outputFixes(report) {
+        report.results.filter(result => Object.prototype.hasOwnProperty.call(result, "output")).forEach(result => {
+            fs.writeFileSync(result.filePath, result.output);
+        });
+    }
+
+
+    /**
+     * Add a plugin by passing its configuration
+     * @param {string} name Name of the plugin.
+     * @param {Object} pluginobject Plugin configuration object.
+     * @returns {void}
+     */
+    addPlugin(name, pluginobject) {
+        this.config.plugins.define(name, pluginobject);
+    }
+
+    /**
+     * Resolves the patterns passed into executeOnFiles() into glob-based patterns
+     * for easier handling.
+     * @param {string[]} patterns The file patterns passed on the command line.
+     * @returns {string[]} The equivalent glob patterns.
+     */
+    resolveFileGlobPatterns(patterns) {
+        return globUtils.resolveFileGlobPatterns(patterns.filter(Boolean), this.options);
+    }
+
+    /**
+     * Executes the current configuration on an array of file and directory names.
+     * @param {string[]} patterns An array of file and directory names.
+     * @returns {Object} The results for all files that were linted.
+     */
+    executeOnFiles(patterns) {
+        const options = this.options,
+            lintResultCache = this._lintResultCache,
+            configHelper = this.config;
+        const cacheFile = getCacheFile(this.options.cacheLocation || this.options.cacheFile, this.options.cwd);
+
+        if (!options.cache && fs.existsSync(cacheFile)) {
+            fs.unlinkSync(cacheFile);
+        }
+
+        const startTime = Date.now();
+        const fileList = globUtils.listFilesToProcess(patterns, options);
+        const allUsedRules = new Set();
+        const results = fileList.map(fileInfo => {
+            if (fileInfo.ignored) {
+                return createIgnoreResult(fileInfo.filename, options.cwd);
+            }
+
+            if (options.cache) {
+                const cachedLintResults = lintResultCache.getCachedLintResults(fileInfo.filename);
+
+                if (cachedLintResults) {
+                    const resultHadMessages = cachedLintResults.messages && cachedLintResults.messages.length;
+
+                    if (resultHadMessages && options.fix) {
+                        debug(`Reprocessing cached file to allow autofix: ${fileInfo.filename}`);
+                    } else {
+                        debug(`Skipping file since it hasn't changed: ${fileInfo.filename}`);
+
+                        return cachedLintResults;
+                    }
+                }
+            }
+
+            // if there's a cache, populate it
+            if ("_rulesCache" in this) {
+                this._rulesCache = this.getRules();
+            }
+
+            debug(`Processing ${fileInfo.filename}`);
+
+            const { result, config } = processFile(fileInfo.filename, configHelper, options, this.linter);
+
+            Object.keys(config.rules)
+                .filter(ruleId => ConfigOps.getRuleSeverity(config.rules[ruleId]))
+                .forEach(ruleId => allUsedRules.add(ruleId));
+
+            return result;
+        });
+
+        if (options.cache) {
+            results.forEach(result => {
+
+                /*
+                 * Store the lint result in the LintResultCache.
+                 * NOTE: The LintResultCache will remove the file source and any
+                 * other properties that are difficult to serialize, and will
+                 * hydrate those properties back in on future lint runs.
+                 */
+                lintResultCache.setCachedLintResults(result.filePath, result);
+            });
+
+            // persist the cache to disk
+            lintResultCache.reconcile();
+        }
+
+        const stats = calculateStatsPerRun(results);
+
+        const usedDeprecatedRules = createRuleDeprecationWarnings(allUsedRules, this.getRules());
+
+        debug(`Linting complete in: ${Date.now() - startTime}ms`);
+
+        return {
+            results,
+            errorCount: stats.errorCount,
+            warningCount: stats.warningCount,
+            fixableErrorCount: stats.fixableErrorCount,
+            fixableWarningCount: stats.fixableWarningCount,
+            usedDeprecatedRules
+        };
+    }
+
+    /**
+     * Executes the current configuration on text.
+     * @param {string} text A string of JavaScript code to lint.
+     * @param {string} filename An optional string representing the texts filename.
+     * @param {boolean} warnIgnored Always warn when a file is ignored
+     * @returns {Object} The results for the linting.
+     */
+    executeOnText(text, filename, warnIgnored) {
+
+        const results = [],
+            options = this.options,
+            configHelper = this.config,
+            ignoredPaths = new IgnoredPaths(options);
+
+        // resolve filename based on options.cwd (for reporting, ignoredPaths also resolves)
+
+        const resolvedFilename = filename && !path.isAbsolute(filename)
+            ? path.resolve(options.cwd, filename)
+            : filename;
+        let usedDeprecatedRules;
+
+        if (resolvedFilename && ignoredPaths.contains(resolvedFilename)) {
+            if (warnIgnored) {
+                results.push(createIgnoreResult(resolvedFilename, options.cwd));
+            }
+            usedDeprecatedRules = [];
+        } else {
+
+            // if there's a cache, populate it
+            if ("_rulesCache" in this) {
+                this._rulesCache = this.getRules();
+            }
+
+            const { result, config } = processText(
+                text,
+                configHelper,
+                resolvedFilename,
+                options.fix,
+                options.allowInlineConfig,
+                options.reportUnusedDisableDirectives,
+                this.linter
+            );
+
+            results.push(result);
+            usedDeprecatedRules = createRuleDeprecationWarnings(
+                Object.keys(config.rules).filter(rule => ConfigOps.getRuleSeverity(config.rules[rule])),
+                this.getRules()
+            );
+        }
+
+        const stats = calculateStatsPerRun(results);
+
+        return {
+            results,
+            errorCount: stats.errorCount,
+            warningCount: stats.warningCount,
+            fixableErrorCount: stats.fixableErrorCount,
+            fixableWarningCount: stats.fixableWarningCount,
+            usedDeprecatedRules
+        };
+    }
+
+    /**
+     * Returns a configuration object for the given file based on the CLI options.
+     * This is the same logic used by the ESLint CLI executable to determine
+     * configuration for each file it processes.
+     * @param {string} filePath The path of the file to retrieve a config object for.
+     * @returns {Object} A configuration object for the file.
+     */
+    getConfigForFile(filePath) {
+        const configHelper = this.config;
+
+        return configHelper.getConfig(filePath);
+    }
+
+    /**
+     * Checks if a given path is ignored by ESLint.
+     * @param {string} filePath The path of the file to check.
+     * @returns {boolean} Whether or not the given path is ignored.
+     */
+    isPathIgnored(filePath) {
+        const resolvedPath = path.resolve(this.options.cwd, filePath);
+        const ignoredPaths = new IgnoredPaths(this.options);
+
+        return ignoredPaths.contains(resolvedPath);
+    }
+
+    /**
+     * Returns the formatter representing the given format or null if no formatter
+     * with the given name can be found.
+     * @param {string} [format] The name of the format to load or the path to a
+     *      custom formatter.
+     * @returns {Function} The formatter function or null if not found.
+     */
+    getFormatter(format) {
+
+        // default is stylish
+        const resolvedFormatName = format || "stylish";
+
+        // only strings are valid formatters
+        if (typeof resolvedFormatName === "string") {
+
+            // replace \ with / for Windows compatibility
+            const normalizedFormatName = resolvedFormatName.replace(/\\/g, "/");
+
+            const cwd = this.options ? this.options.cwd : process.cwd();
+            const namespace = naming.getNamespaceFromTerm(normalizedFormatName);
+
+            let formatterPath;
+
+            // if there's a slash, then it's a file
+            if (!namespace && normalizedFormatName.indexOf("/") > -1) {
+                formatterPath = path.resolve(cwd, normalizedFormatName);
+            } else {
+                try {
+                    const npmFormat = naming.normalizePackageName(normalizedFormatName, "eslint-formatter");
+
+                    formatterPath = resolver.resolve(npmFormat, `${cwd}/node_modules`);
+                } catch (e) {
+                    formatterPath = `./formatters/${normalizedFormatName}`;
+                }
+            }
+
+            try {
+                return require(formatterPath);
+            } catch (ex) {
+                ex.message = `There was a problem loading formatter: ${formatterPath}\nError: ${ex.message}`;
+                throw ex;
+            }
+
+        } else {
+            return null;
+        }
+    }
+}
+
+CLIEngine.version = pkg.version;
+CLIEngine.getFormatter = CLIEngine.prototype.getFormatter;
+
+module.exports = CLIEngine;

node_modules/eslint/lib/cli.js

@@ -0,0 +1,227 @@
+/**
+ * @fileoverview Main CLI object.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+/*
+ * The CLI object should *not* call process.exit() directly. It should only return
+ * exit codes. This allows other programs to use the CLI object and still control
+ * when the program exits.
+ */
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("fs"),
+    path = require("path"),
+    options = require("./options"),
+    CLIEngine = require("./cli-engine"),
+    mkdirp = require("mkdirp"),
+    log = require("./util/logging");
+
+const debug = require("debug")("eslint:cli");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Predicate function for whether or not to apply fixes in quiet mode.
+ * If a message is a warning, do not apply a fix.
+ * @param {LintResult} lintResult The lint result.
+ * @returns {boolean} True if the lint message is an error (and thus should be
+ * autofixed), false otherwise.
+ */
+function quietFixPredicate(lintResult) {
+    return lintResult.severity === 2;
+}
+
+/**
+ * Translates the CLI options into the options expected by the CLIEngine.
+ * @param {Object} cliOptions The CLI options to translate.
+ * @returns {CLIEngineOptions} The options object for the CLIEngine.
+ * @private
+ */
+function translateOptions(cliOptions) {
+    return {
+        envs: cliOptions.env,
+        extensions: cliOptions.ext,
+        rules: cliOptions.rule,
+        plugins: cliOptions.plugin,
+        globals: cliOptions.global,
+        ignore: cliOptions.ignore,
+        ignorePath: cliOptions.ignorePath,
+        ignorePattern: cliOptions.ignorePattern,
+        configFile: cliOptions.config,
+        rulePaths: cliOptions.rulesdir,
+        useEslintrc: cliOptions.eslintrc,
+        parser: cliOptions.parser,
+        parserOptions: cliOptions.parserOptions,
+        cache: cliOptions.cache,
+        cacheFile: cliOptions.cacheFile,
+        cacheLocation: cliOptions.cacheLocation,
+        fix: (cliOptions.fix || cliOptions.fixDryRun) && (cliOptions.quiet ? quietFixPredicate : true),
+        fixTypes: cliOptions.fixType,
+        allowInlineConfig: cliOptions.inlineConfig,
+        reportUnusedDisableDirectives: cliOptions.reportUnusedDisableDirectives
+    };
+}
+
+/**
+ * Outputs the results of the linting.
+ * @param {CLIEngine} engine The CLIEngine to use.
+ * @param {LintResult[]} results The results to print.
+ * @param {string} format The name of the formatter to use or the path to the formatter.
+ * @param {string} outputFile The path for the output file.
+ * @returns {boolean} True if the printing succeeds, false if not.
+ * @private
+ */
+function printResults(engine, results, format, outputFile) {
+    let formatter;
+
+    try {
+        formatter = engine.getFormatter(format);
+    } catch (e) {
+        log.error(e.message);
+        return false;
+    }
+
+    const output = formatter(results);
+
+    if (output) {
+        if (outputFile) {
+            const filePath = path.resolve(process.cwd(), outputFile);
+
+            if (fs.existsSync(filePath) && fs.statSync(filePath).isDirectory()) {
+                log.error("Cannot write to output file path, it is a directory: %s", outputFile);
+                return false;
+            }
+
+            try {
+                mkdirp.sync(path.dirname(filePath));
+                fs.writeFileSync(filePath, output);
+            } catch (ex) {
+                log.error("There was a problem writing the output file:\n%s", ex);
+                return false;
+            }
+        } else {
+            log.info(output);
+        }
+    }
+
+    return true;
+
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Encapsulates all CLI behavior for eslint. Makes it easier to test as well as
+ * for other Node.js programs to effectively run the CLI.
+ */
+const cli = {
+
+    /**
+     * Executes the CLI based on an array of arguments that is passed in.
+     * @param {string|Array|Object} args The arguments to process.
+     * @param {string} [text] The text to lint (used for TTY).
+     * @returns {int} The exit code for the operation.
+     */
+    execute(args, text) {
+        if (Array.isArray(args)) {
+            debug("CLI args: %o", args.slice(2));
+        }
+
+        let currentOptions;
+
+        try {
+            currentOptions = options.parse(args);
+        } catch (error) {
+            log.error(error.message);
+            return 2;
+        }
+
+        const files = currentOptions._;
+
+        const useStdin = typeof text === "string";
+
+        if (currentOptions.version) { // version from package.json
+
+            log.info(`v${require("../package.json").version}`);
+
+        } else if (currentOptions.printConfig) {
+            if (files.length) {
+                log.error("The --print-config option must be used with exactly one file name.");
+                return 2;
+            }
+            if (useStdin) {
+                log.error("The --print-config option is not available for piped-in code.");
+                return 2;
+            }
+
+            const engine = new CLIEngine(translateOptions(currentOptions));
+
+            const fileConfig = engine.getConfigForFile(currentOptions.printConfig);
+
+            log.info(JSON.stringify(fileConfig, null, "  "));
+            return 0;
+        } else if (currentOptions.help || (!files.length && !useStdin)) {
+
+            log.info(options.generateHelp());
+
+        } else {
+
+            debug(`Running on ${useStdin ? "text" : "files"}`);
+
+            if (currentOptions.fix && currentOptions.fixDryRun) {
+                log.error("The --fix option and the --fix-dry-run option cannot be used together.");
+                return 2;
+            }
+
+            if (useStdin && currentOptions.fix) {
+                log.error("The --fix option is not available for piped-in code; use --fix-dry-run instead.");
+                return 2;
+            }
+
+            if (currentOptions.fixType && !currentOptions.fix && !currentOptions.fixDryRun) {
+                log.error("The --fix-type option requires either --fix or --fix-dry-run.");
+                return 2;
+            }
+
+            const engine = new CLIEngine(translateOptions(currentOptions));
+            const report = useStdin ? engine.executeOnText(text, currentOptions.stdinFilename, true) : engine.executeOnFiles(files);
+
+            if (currentOptions.fix) {
+                debug("Fix mode enabled - applying fixes");
+                CLIEngine.outputFixes(report);
+            }
+
+            if (currentOptions.quiet) {
+                debug("Quiet mode enabled - filtering out warnings");
+                report.results = CLIEngine.getErrorResults(report.results);
+            }
+
+            if (printResults(engine, report.results, currentOptions.format, currentOptions.outputFile)) {
+                const tooManyWarnings = currentOptions.maxWarnings >= 0 && report.warningCount > currentOptions.maxWarnings;
+
+                if (!report.errorCount && tooManyWarnings) {
+                    log.error("ESLint found too many warnings (maximum: %s).", currentOptions.maxWarnings);
+                }
+
+                return (report.errorCount || tooManyWarnings) ? 1 : 0;
+            }
+            return 2;
+
+
+        }
+
+        return 0;
+    }
+};
+
+module.exports = cli;

node_modules/eslint/lib/code-path-analysis/code-path-analyzer.js

@@ -0,0 +1,683 @@
+/**
+ * @fileoverview A class of the code path analyzer.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const assert = require("assert"),
+    CodePath = require("./code-path"),
+    CodePathSegment = require("./code-path-segment"),
+    IdGenerator = require("./id-generator"),
+    debug = require("./debug-helpers"),
+    astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is a `case` node (not `default` node).
+ *
+ * @param {ASTNode} node - A `SwitchCase` node to check.
+ * @returns {boolean} `true` if the node is a `case` node (not `default` node).
+ */
+function isCaseNode(node) {
+    return Boolean(node.test);
+}
+
+/**
+ * Checks whether the given logical operator is taken into account for the code
+ * path analysis.
+ *
+ * @param {string} operator - The operator found in the LogicalExpression node
+ * @returns {boolean} `true` if the operator is "&&" or "||"
+ */
+function isHandledLogicalOperator(operator) {
+    return operator === "&&" || operator === "||";
+}
+
+/**
+ * Checks whether or not a given logical expression node goes different path
+ * between the `true` case and the `false` case.
+ *
+ * @param {ASTNode} node - A node to check.
+ * @returns {boolean} `true` if the node is a test of a choice statement.
+ */
+function isForkingByTrueOrFalse(node) {
+    const parent = node.parent;
+
+    switch (parent.type) {
+        case "ConditionalExpression":
+        case "IfStatement":
+        case "WhileStatement":
+        case "DoWhileStatement":
+        case "ForStatement":
+            return parent.test === node;
+
+        case "LogicalExpression":
+            return isHandledLogicalOperator(parent.operator);
+
+        default:
+            return false;
+    }
+}
+
+/**
+ * Gets the boolean value of a given literal node.
+ *
+ * This is used to detect infinity loops (e.g. `while (true) {}`).
+ * Statements preceded by an infinity loop are unreachable if the loop didn't
+ * have any `break` statement.
+ *
+ * @param {ASTNode} node - A node to get.
+ * @returns {boolean|undefined} a boolean value if the node is a Literal node,
+ *   otherwise `undefined`.
+ */
+function getBooleanValueIfSimpleConstant(node) {
+    if (node.type === "Literal") {
+        return Boolean(node.value);
+    }
+    return void 0;
+}
+
+/**
+ * Checks that a given identifier node is a reference or not.
+ *
+ * This is used to detect the first throwable node in a `try` block.
+ *
+ * @param {ASTNode} node - An Identifier node to check.
+ * @returns {boolean} `true` if the node is a reference.
+ */
+function isIdentifierReference(node) {
+    const parent = node.parent;
+
+    switch (parent.type) {
+        case "LabeledStatement":
+        case "BreakStatement":
+        case "ContinueStatement":
+        case "ArrayPattern":
+        case "RestElement":
+        case "ImportSpecifier":
+        case "ImportDefaultSpecifier":
+        case "ImportNamespaceSpecifier":
+        case "CatchClause":
+            return false;
+
+        case "FunctionDeclaration":
+        case "FunctionExpression":
+        case "ArrowFunctionExpression":
+        case "ClassDeclaration":
+        case "ClassExpression":
+        case "VariableDeclarator":
+            return parent.id !== node;
+
+        case "Property":
+        case "MethodDefinition":
+            return (
+                parent.key !== node ||
+                parent.computed ||
+                parent.shorthand
+            );
+
+        case "AssignmentPattern":
+            return parent.key !== node;
+
+        default:
+            return true;
+    }
+}
+
+/**
+ * Updates the current segment with the head segment.
+ * This is similar to local branches and tracking branches of git.
+ *
+ * To separate the current and the head is in order to not make useless segments.
+ *
+ * In this process, both "onCodePathSegmentStart" and "onCodePathSegmentEnd"
+ * events are fired.
+ *
+ * @param {CodePathAnalyzer} analyzer - The instance.
+ * @param {ASTNode} node - The current AST node.
+ * @returns {void}
+ */
+function forwardCurrentToHead(analyzer, node) {
+    const codePath = analyzer.codePath;
+    const state = CodePath.getState(codePath);
+    const currentSegments = state.currentSegments;
+    const headSegments = state.headSegments;
+    const end = Math.max(currentSegments.length, headSegments.length);
+    let i, currentSegment, headSegment;
+
+    // Fires leaving events.
+    for (i = 0; i < end; ++i) {
+        currentSegment = currentSegments[i];
+        headSegment = headSegments[i];
+
+        if (currentSegment !== headSegment && currentSegment) {
+            debug.dump(`onCodePathSegmentEnd ${currentSegment.id}`);
+
+            if (currentSegment.reachable) {
+                analyzer.emitter.emit(
+                    "onCodePathSegmentEnd",
+                    currentSegment,
+                    node
+                );
+            }
+        }
+    }
+
+    // Update state.
+    state.currentSegments = headSegments;
+
+    // Fires entering events.
+    for (i = 0; i < end; ++i) {
+        currentSegment = currentSegments[i];
+        headSegment = headSegments[i];
+
+        if (currentSegment !== headSegment && headSegment) {
+            debug.dump(`onCodePathSegmentStart ${headSegment.id}`);
+
+            CodePathSegment.markUsed(headSegment);
+            if (headSegment.reachable) {
+                analyzer.emitter.emit(
+                    "onCodePathSegmentStart",
+                    headSegment,
+                    node
+                );
+            }
+        }
+    }
+
+}
+
+/**
+ * Updates the current segment with empty.
+ * This is called at the last of functions or the program.
+ *
+ * @param {CodePathAnalyzer} analyzer - The instance.
+ * @param {ASTNode} node - The current AST node.
+ * @returns {void}
+ */
+function leaveFromCurrentSegment(analyzer, node) {
+    const state = CodePath.getState(analyzer.codePath);
+    const currentSegments = state.currentSegments;
+
+    for (let i = 0; i < currentSegments.length; ++i) {
+        const currentSegment = currentSegments[i];
+
+        debug.dump(`onCodePathSegmentEnd ${currentSegment.id}`);
+        if (currentSegment.reachable) {
+            analyzer.emitter.emit(
+                "onCodePathSegmentEnd",
+                currentSegment,
+                node
+            );
+        }
+    }
+
+    state.currentSegments = [];
+}
+
+/**
+ * Updates the code path due to the position of a given node in the parent node
+ * thereof.
+ *
+ * For example, if the node is `parent.consequent`, this creates a fork from the
+ * current path.
+ *
+ * @param {CodePathAnalyzer} analyzer - The instance.
+ * @param {ASTNode} node - The current AST node.
+ * @returns {void}
+ */
+function preprocess(analyzer, node) {
+    const codePath = analyzer.codePath;
+    const state = CodePath.getState(codePath);
+    const parent = node.parent;
+
+    switch (parent.type) {
+        case "LogicalExpression":
+            if (
+                parent.right === node &&
+                isHandledLogicalOperator(parent.operator)
+            ) {
+                state.makeLogicalRight();
+            }
+            break;
+
+        case "ConditionalExpression":
+        case "IfStatement":
+
+            /*
+             * Fork if this node is at `consequent`/`alternate`.
+             * `popForkContext()` exists at `IfStatement:exit` and
+             * `ConditionalExpression:exit`.
+             */
+            if (parent.consequent === node) {
+                state.makeIfConsequent();
+            } else if (parent.alternate === node) {
+                state.makeIfAlternate();
+            }
+            break;
+
+        case "SwitchCase":
+            if (parent.consequent[0] === node) {
+                state.makeSwitchCaseBody(false, !parent.test);
+            }
+            break;
+
+        case "TryStatement":
+            if (parent.handler === node) {
+                state.makeCatchBlock();
+            } else if (parent.finalizer === node) {
+                state.makeFinallyBlock();
+            }
+            break;
+
+        case "WhileStatement":
+            if (parent.test === node) {
+                state.makeWhileTest(getBooleanValueIfSimpleConstant(node));
+            } else {
+                assert(parent.body === node);
+                state.makeWhileBody();
+            }
+            break;
+
+        case "DoWhileStatement":
+            if (parent.body === node) {
+                state.makeDoWhileBody();
+            } else {
+                assert(parent.test === node);
+                state.makeDoWhileTest(getBooleanValueIfSimpleConstant(node));
+            }
+            break;
+
+        case "ForStatement":
+            if (parent.test === node) {
+                state.makeForTest(getBooleanValueIfSimpleConstant(node));
+            } else if (parent.update === node) {
+                state.makeForUpdate();
+            } else if (parent.body === node) {
+                state.makeForBody();
+            }
+            break;
+
+        case "ForInStatement":
+        case "ForOfStatement":
+            if (parent.left === node) {
+                state.makeForInOfLeft();
+            } else if (parent.right === node) {
+                state.makeForInOfRight();
+            } else {
+                assert(parent.body === node);
+                state.makeForInOfBody();
+            }
+            break;
+
+        case "AssignmentPattern":
+
+            /*
+             * Fork if this node is at `right`.
+             * `left` is executed always, so it uses the current path.
+             * `popForkContext()` exists at `AssignmentPattern:exit`.
+             */
+            if (parent.right === node) {
+                state.pushForkContext();
+                state.forkBypassPath();
+                state.forkPath();
+            }
+            break;
+
+        default:
+            break;
+    }
+}
+
+/**
+ * Updates the code path due to the type of a given node in entering.
+ *
+ * @param {CodePathAnalyzer} analyzer - The instance.
+ * @param {ASTNode} node - The current AST node.
+ * @returns {void}
+ */
+function processCodePathToEnter(analyzer, node) {
+    let codePath = analyzer.codePath;
+    let state = codePath && CodePath.getState(codePath);
+    const parent = node.parent;
+
+    switch (node.type) {
+        case "Program":
+        case "FunctionDeclaration":
+        case "FunctionExpression":
+        case "ArrowFunctionExpression":
+            if (codePath) {
+
+                // Emits onCodePathSegmentStart events if updated.
+                forwardCurrentToHead(analyzer, node);
+                debug.dumpState(node, state, false);
+            }
+
+            // Create the code path of this scope.
+            codePath = analyzer.codePath = new CodePath(
+                analyzer.idGenerator.next(),
+                codePath,
+                analyzer.onLooped
+            );
+            state = CodePath.getState(codePath);
+
+            // Emits onCodePathStart events.
+            debug.dump(`onCodePathStart ${codePath.id}`);
+            analyzer.emitter.emit("onCodePathStart", codePath, node);
+            break;
+
+        case "LogicalExpression":
+            if (isHandledLogicalOperator(node.operator)) {
+                state.pushChoiceContext(
+                    node.operator,
+                    isForkingByTrueOrFalse(node)
+                );
+            }
+            break;
+
+        case "ConditionalExpression":
+        case "IfStatement":
+            state.pushChoiceContext("test", false);
+            break;
+
+        case "SwitchStatement":
+            state.pushSwitchContext(
+                node.cases.some(isCaseNode),
+                astUtils.getLabel(node)
+            );
+            break;
+
+        case "TryStatement":
+            state.pushTryContext(Boolean(node.finalizer));
+            break;
+
+        case "SwitchCase":
+
+            /*
+             * Fork if this node is after the 2st node in `cases`.
+             * It's similar to `else` blocks.
+             * The next `test` node is processed in this path.
+             */
+            if (parent.discriminant !== node && parent.cases[0] !== node) {
+                state.forkPath();
+            }
+            break;
+
+        case "WhileStatement":
+        case "DoWhileStatement":
+        case "ForStatement":
+        case "ForInStatement":
+        case "ForOfStatement":
+            state.pushLoopContext(node.type, astUtils.getLabel(node));
+            break;
+
+        case "LabeledStatement":
+            if (!astUtils.isBreakableStatement(node.body)) {
+                state.pushBreakContext(false, node.label.name);
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    // Emits onCodePathSegmentStart events if updated.
+    forwardCurrentToHead(analyzer, node);
+    debug.dumpState(node, state, false);
+}
+
+/**
+ * Updates the code path due to the type of a given node in leaving.
+ *
+ * @param {CodePathAnalyzer} analyzer - The instance.
+ * @param {ASTNode} node - The current AST node.
+ * @returns {void}
+ */
+function processCodePathToExit(analyzer, node) {
+    const codePath = analyzer.codePath;
+    const state = CodePath.getState(codePath);
+    let dontForward = false;
+
+    switch (node.type) {
+        case "IfStatement":
+        case "ConditionalExpression":
+            state.popChoiceContext();
+            break;
+
+        case "LogicalExpression":
+            if (isHandledLogicalOperator(node.operator)) {
+                state.popChoiceContext();
+            }
+            break;
+
+        case "SwitchStatement":
+            state.popSwitchContext();
+            break;
+
+        case "SwitchCase":
+
+            /*
+             * This is the same as the process at the 1st `consequent` node in
+             * `preprocess` function.
+             * Must do if this `consequent` is empty.
+             */
+            if (node.consequent.length === 0) {
+                state.makeSwitchCaseBody(true, !node.test);
+            }
+            if (state.forkContext.reachable) {
+                dontForward = true;
+            }
+            break;
+
+        case "TryStatement":
+            state.popTryContext();
+            break;
+
+        case "BreakStatement":
+            forwardCurrentToHead(analyzer, node);
+            state.makeBreak(node.label && node.label.name);
+            dontForward = true;
+            break;
+
+        case "ContinueStatement":
+            forwardCurrentToHead(analyzer, node);
+            state.makeContinue(node.label && node.label.name);
+            dontForward = true;
+            break;
+
+        case "ReturnStatement":
+            forwardCurrentToHead(analyzer, node);
+            state.makeReturn();
+            dontForward = true;
+            break;
+
+        case "ThrowStatement":
+            forwardCurrentToHead(analyzer, node);
+            state.makeThrow();
+            dontForward = true;
+            break;
+
+        case "Identifier":
+            if (isIdentifierReference(node)) {
+                state.makeFirstThrowablePathInTryBlock();
+                dontForward = true;
+            }
+            break;
+
+        case "CallExpression":
+        case "MemberExpression":
+        case "NewExpression":
+            state.makeFirstThrowablePathInTryBlock();
+            break;
+
+        case "WhileStatement":
+        case "DoWhileStatement":
+        case "ForStatement":
+        case "ForInStatement":
+        case "ForOfStatement":
+            state.popLoopContext();
+            break;
+
+        case "AssignmentPattern":
+            state.popForkContext();
+            break;
+
+        case "LabeledStatement":
+            if (!astUtils.isBreakableStatement(node.body)) {
+                state.popBreakContext();
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    // Emits onCodePathSegmentStart events if updated.
+    if (!dontForward) {
+        forwardCurrentToHead(analyzer, node);
+    }
+    debug.dumpState(node, state, true);
+}
+
+/**
+ * Updates the code path to finalize the current code path.
+ *
+ * @param {CodePathAnalyzer} analyzer - The instance.
+ * @param {ASTNode} node - The current AST node.
+ * @returns {void}
+ */
+function postprocess(analyzer, node) {
+    switch (node.type) {
+        case "Program":
+        case "FunctionDeclaration":
+        case "FunctionExpression":
+        case "ArrowFunctionExpression": {
+            let codePath = analyzer.codePath;
+
+            // Mark the current path as the final node.
+            CodePath.getState(codePath).makeFinal();
+
+            // Emits onCodePathSegmentEnd event of the current segments.
+            leaveFromCurrentSegment(analyzer, node);
+
+            // Emits onCodePathEnd event of this code path.
+            debug.dump(`onCodePathEnd ${codePath.id}`);
+            analyzer.emitter.emit("onCodePathEnd", codePath, node);
+            debug.dumpDot(codePath);
+
+            codePath = analyzer.codePath = analyzer.codePath.upper;
+            if (codePath) {
+                debug.dumpState(node, CodePath.getState(codePath), true);
+            }
+            break;
+        }
+
+        default:
+            break;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * The class to analyze code paths.
+ * This class implements the EventGenerator interface.
+ */
+class CodePathAnalyzer {
+
+    /**
+     * @param {EventGenerator} eventGenerator - An event generator to wrap.
+     */
+    constructor(eventGenerator) {
+        this.original = eventGenerator;
+        this.emitter = eventGenerator.emitter;
+        this.codePath = null;
+        this.idGenerator = new IdGenerator("s");
+        this.currentNode = null;
+        this.onLooped = this.onLooped.bind(this);
+    }
+
+    /**
+     * Does the process to enter a given AST node.
+     * This updates state of analysis and calls `enterNode` of the wrapped.
+     *
+     * @param {ASTNode} node - A node which is entering.
+     * @returns {void}
+     */
+    enterNode(node) {
+        this.currentNode = node;
+
+        // Updates the code path due to node's position in its parent node.
+        if (node.parent) {
+            preprocess(this, node);
+        }
+
+        /*
+         * Updates the code path.
+         * And emits onCodePathStart/onCodePathSegmentStart events.
+         */
+        processCodePathToEnter(this, node);
+
+        // Emits node events.
+        this.original.enterNode(node);
+
+        this.currentNode = null;
+    }
+
+    /**
+     * Does the process to leave a given AST node.
+     * This updates state of analysis and calls `leaveNode` of the wrapped.
+     *
+     * @param {ASTNode} node - A node which is leaving.
+     * @returns {void}
+     */
+    leaveNode(node) {
+        this.currentNode = node;
+
+        /*
+         * Updates the code path.
+         * And emits onCodePathStart/onCodePathSegmentStart events.
+         */
+        processCodePathToExit(this, node);
+
+        // Emits node events.
+        this.original.leaveNode(node);
+
+        // Emits the last onCodePathStart/onCodePathSegmentStart events.
+        postprocess(this, node);
+
+        this.currentNode = null;
+    }
+
+    /**
+     * This is called on a code path looped.
+     * Then this raises a looped event.
+     *
+     * @param {CodePathSegment} fromSegment - A segment of prev.
+     * @param {CodePathSegment} toSegment - A segment of next.
+     * @returns {void}
+     */
+    onLooped(fromSegment, toSegment) {
+        if (fromSegment.reachable && toSegment.reachable) {
+            debug.dump(`onCodePathSegmentLoop ${fromSegment.id} -> ${toSegment.id}`);
+            this.emitter.emit(
+                "onCodePathSegmentLoop",
+                fromSegment,
+                toSegment,
+                this.currentNode
+            );
+        }
+    }
+}
+
+module.exports = CodePathAnalyzer;

node_modules/eslint/lib/code-path-analysis/code-path-segment.js

@@ -0,0 +1,245 @@
+/**
+ * @fileoverview A class of the code path segment.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const debug = require("./debug-helpers");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given segment is reachable.
+ *
+ * @param {CodePathSegment} segment - A segment to check.
+ * @returns {boolean} `true` if the segment is reachable.
+ */
+function isReachable(segment) {
+    return segment.reachable;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * A code path segment.
+ */
+class CodePathSegment {
+
+    /**
+     * @param {string} id - An identifier.
+     * @param {CodePathSegment[]} allPrevSegments - An array of the previous segments.
+     *   This array includes unreachable segments.
+     * @param {boolean} reachable - A flag which shows this is reachable.
+     */
+    constructor(id, allPrevSegments, reachable) {
+
+        /**
+         * The identifier of this code path.
+         * Rules use it to store additional information of each rule.
+         * @type {string}
+         */
+        this.id = id;
+
+        /**
+         * An array of the next segments.
+         * @type {CodePathSegment[]}
+         */
+        this.nextSegments = [];
+
+        /**
+         * An array of the previous segments.
+         * @type {CodePathSegment[]}
+         */
+        this.prevSegments = allPrevSegments.filter(isReachable);
+
+        /**
+         * An array of the next segments.
+         * This array includes unreachable segments.
+         * @type {CodePathSegment[]}
+         */
+        this.allNextSegments = [];
+
+        /**
+         * An array of the previous segments.
+         * This array includes unreachable segments.
+         * @type {CodePathSegment[]}
+         */
+        this.allPrevSegments = allPrevSegments;
+
+        /**
+         * A flag which shows this is reachable.
+         * @type {boolean}
+         */
+        this.reachable = reachable;
+
+        // Internal data.
+        Object.defineProperty(this, "internal", {
+            value: {
+                used: false,
+                loopedPrevSegments: []
+            }
+        });
+
+        /* istanbul ignore if */
+        if (debug.enabled) {
+            this.internal.nodes = [];
+            this.internal.exitNodes = [];
+        }
+    }
+
+    /**
+     * Checks a given previous segment is coming from the end of a loop.
+     *
+     * @param {CodePathSegment} segment - A previous segment to check.
+     * @returns {boolean} `true` if the segment is coming from the end of a loop.
+     */
+    isLoopedPrevSegment(segment) {
+        return this.internal.loopedPrevSegments.indexOf(segment) !== -1;
+    }
+
+    /**
+     * Creates the root segment.
+     *
+     * @param {string} id - An identifier.
+     * @returns {CodePathSegment} The created segment.
+     */
+    static newRoot(id) {
+        return new CodePathSegment(id, [], true);
+    }
+
+    /**
+     * Creates a segment that follows given segments.
+     *
+     * @param {string} id - An identifier.
+     * @param {CodePathSegment[]} allPrevSegments - An array of the previous segments.
+     * @returns {CodePathSegment} The created segment.
+     */
+    static newNext(id, allPrevSegments) {
+        return new CodePathSegment(
+            id,
+            CodePathSegment.flattenUnusedSegments(allPrevSegments),
+            allPrevSegments.some(isReachable)
+        );
+    }
+
+    /**
+     * Creates an unreachable segment that follows given segments.
+     *
+     * @param {string} id - An identifier.
+     * @param {CodePathSegment[]} allPrevSegments - An array of the previous segments.
+     * @returns {CodePathSegment} The created segment.
+     */
+    static newUnreachable(id, allPrevSegments) {
+        const segment = new CodePathSegment(id, CodePathSegment.flattenUnusedSegments(allPrevSegments), false);
+
+        /*
+         * In `if (a) return a; foo();` case, the unreachable segment preceded by
+         * the return statement is not used but must not be remove.
+         */
+        CodePathSegment.markUsed(segment);
+
+        return segment;
+    }
+
+    /**
+     * Creates a segment that follows given segments.
+     * This factory method does not connect with `allPrevSegments`.
+     * But this inherits `reachable` flag.
+     *
+     * @param {string} id - An identifier.
+     * @param {CodePathSegment[]} allPrevSegments - An array of the previous segments.
+     * @returns {CodePathSegment} The created segment.
+     */
+    static newDisconnected(id, allPrevSegments) {
+        return new CodePathSegment(id, [], allPrevSegments.some(isReachable));
+    }
+
+    /**
+     * Makes a given segment being used.
+     *
+     * And this function registers the segment into the previous segments as a next.
+     *
+     * @param {CodePathSegment} segment - A segment to mark.
+     * @returns {void}
+     */
+    static markUsed(segment) {
+        if (segment.internal.used) {
+            return;
+        }
+        segment.internal.used = true;
+
+        let i;
+
+        if (segment.reachable) {
+            for (i = 0; i < segment.allPrevSegments.length; ++i) {
+                const prevSegment = segment.allPrevSegments[i];
+
+                prevSegment.allNextSegments.push(segment);
+                prevSegment.nextSegments.push(segment);
+            }
+        } else {
+            for (i = 0; i < segment.allPrevSegments.length; ++i) {
+                segment.allPrevSegments[i].allNextSegments.push(segment);
+            }
+        }
+    }
+
+    /**
+     * Marks a previous segment as looped.
+     *
+     * @param {CodePathSegment} segment - A segment.
+     * @param {CodePathSegment} prevSegment - A previous segment to mark.
+     * @returns {void}
+     */
+    static markPrevSegmentAsLooped(segment, prevSegment) {
+        segment.internal.loopedPrevSegments.push(prevSegment);
+    }
+
+    /**
+     * Replaces unused segments with the previous segments of each unused segment.
+     *
+     * @param {CodePathSegment[]} segments - An array of segments to replace.
+     * @returns {CodePathSegment[]} The replaced array.
+     */
+    static flattenUnusedSegments(segments) {
+        const done = Object.create(null);
+        const retv = [];
+
+        for (let i = 0; i < segments.length; ++i) {
+            const segment = segments[i];
+
+            // Ignores duplicated.
+            if (done[segment.id]) {
+                continue;
+            }
+
+            // Use previous segments if unused.
+            if (!segment.internal.used) {
+                for (let j = 0; j < segment.allPrevSegments.length; ++j) {
+                    const prevSegment = segment.allPrevSegments[j];
+
+                    if (!done[prevSegment.id]) {
+                        done[prevSegment.id] = true;
+                        retv.push(prevSegment);
+                    }
+                }
+            } else {
+                done[segment.id] = true;
+                retv.push(segment);
+            }
+        }
+
+        return retv;
+    }
+}
+
+module.exports = CodePathSegment;

node_modules/eslint/lib/code-path-analysis/code-path.js

@@ -0,0 +1,239 @@
+/**
+ * @fileoverview A class of the code path.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const CodePathState = require("./code-path-state");
+const IdGenerator = require("./id-generator");
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * A code path.
+ */
+class CodePath {
+
+    /**
+     * @param {string} id - An identifier.
+     * @param {CodePath|null} upper - The code path of the upper function scope.
+     * @param {Function} onLooped - A callback function to notify looping.
+     */
+    constructor(id, upper, onLooped) {
+
+        /**
+         * The identifier of this code path.
+         * Rules use it to store additional information of each rule.
+         * @type {string}
+         */
+        this.id = id;
+
+        /**
+         * The code path of the upper function scope.
+         * @type {CodePath|null}
+         */
+        this.upper = upper;
+
+        /**
+         * The code paths of nested function scopes.
+         * @type {CodePath[]}
+         */
+        this.childCodePaths = [];
+
+        // Initializes internal state.
+        Object.defineProperty(
+            this,
+            "internal",
+            { value: new CodePathState(new IdGenerator(`${id}_`), onLooped) }
+        );
+
+        // Adds this into `childCodePaths` of `upper`.
+        if (upper) {
+            upper.childCodePaths.push(this);
+        }
+    }
+
+    /**
+     * Gets the state of a given code path.
+     *
+     * @param {CodePath} codePath - A code path to get.
+     * @returns {CodePathState} The state of the code path.
+     */
+    static getState(codePath) {
+        return codePath.internal;
+    }
+
+    /**
+     * The initial code path segment.
+     * @type {CodePathSegment}
+     */
+    get initialSegment() {
+        return this.internal.initialSegment;
+    }
+
+    /**
+     * Final code path segments.
+     * This array is a mix of `returnedSegments` and `thrownSegments`.
+     * @type {CodePathSegment[]}
+     */
+    get finalSegments() {
+        return this.internal.finalSegments;
+    }
+
+    /**
+     * Final code path segments which is with `return` statements.
+     * This array contains the last path segment if it's reachable.
+     * Since the reachable last path returns `undefined`.
+     * @type {CodePathSegment[]}
+     */
+    get returnedSegments() {
+        return this.internal.returnedForkContext;
+    }
+
+    /**
+     * Final code path segments which is with `throw` statements.
+     * @type {CodePathSegment[]}
+     */
+    get thrownSegments() {
+        return this.internal.thrownForkContext;
+    }
+
+    /**
+     * Current code path segments.
+     * @type {CodePathSegment[]}
+     */
+    get currentSegments() {
+        return this.internal.currentSegments;
+    }
+
+    /**
+     * Traverses all segments in this code path.
+     *
+     *     codePath.traverseSegments(function(segment, controller) {
+     *         // do something.
+     *     });
+     *
+     * This method enumerates segments in order from the head.
+     *
+     * The `controller` object has two methods.
+     *
+     * - `controller.skip()` - Skip the following segments in this branch.
+     * - `controller.break()` - Skip all following segments.
+     *
+     * @param {Object} [options] - Omittable.
+     * @param {CodePathSegment} [options.first] - The first segment to traverse.
+     * @param {CodePathSegment} [options.last] - The last segment to traverse.
+     * @param {Function} callback - A callback function.
+     * @returns {void}
+     */
+    traverseSegments(options, callback) {
+        let resolvedOptions;
+        let resolvedCallback;
+
+        if (typeof options === "function") {
+            resolvedCallback = options;
+            resolvedOptions = {};
+        } else {
+            resolvedOptions = options || {};
+            resolvedCallback = callback;
+        }
+
+        const startSegment = resolvedOptions.first || this.internal.initialSegment;
+        const lastSegment = resolvedOptions.last;
+
+        let item = null;
+        let index = 0;
+        let end = 0;
+        let segment = null;
+        const visited = Object.create(null);
+        const stack = [[startSegment, 0]];
+        let skippedSegment = null;
+        let broken = false;
+        const controller = {
+            skip() {
+                if (stack.length <= 1) {
+                    broken = true;
+                } else {
+                    skippedSegment = stack[stack.length - 2][0];
+                }
+            },
+            break() {
+                broken = true;
+            }
+        };
+
+        /**
+         * Checks a given previous segment has been visited.
+         * @param {CodePathSegment} prevSegment - A previous segment to check.
+         * @returns {boolean} `true` if the segment has been visited.
+         */
+        function isVisited(prevSegment) {
+            return (
+                visited[prevSegment.id] ||
+                segment.isLoopedPrevSegment(prevSegment)
+            );
+        }
+
+        while (stack.length > 0) {
+            item = stack[stack.length - 1];
+            segment = item[0];
+            index = item[1];
+
+            if (index === 0) {
+
+                // Skip if this segment has been visited already.
+                if (visited[segment.id]) {
+                    stack.pop();
+                    continue;
+                }
+
+                // Skip if all previous segments have not been visited.
+                if (segment !== startSegment &&
+                    segment.prevSegments.length > 0 &&
+                    !segment.prevSegments.every(isVisited)
+                ) {
+                    stack.pop();
+                    continue;
+                }
+
+                // Reset the flag of skipping if all branches have been skipped.
+                if (skippedSegment && segment.prevSegments.indexOf(skippedSegment) !== -1) {
+                    skippedSegment = null;
+                }
+                visited[segment.id] = true;
+
+                // Call the callback when the first time.
+                if (!skippedSegment) {
+                    resolvedCallback.call(this, segment, controller);
+                    if (segment === lastSegment) {
+                        controller.skip();
+                    }
+                    if (broken) {
+                        break;
+                    }
+                }
+            }
+
+            // Update the stack.
+            end = segment.nextSegments.length - 1;
+            if (index < end) {
+                item[1] += 1;
+                stack.push([segment.nextSegments[index], 0]);
+            } else if (index === end) {
+                item[0] = segment.nextSegments[index];
+                item[1] = 0;
+            } else {
+                stack.pop();
+            }
+        }
+    }
+}
+
+module.exports = CodePath;

node_modules/eslint/lib/code-path-analysis/debug-helpers.js

@@ -0,0 +1,200 @@
+/**
+ * @fileoverview Helpers to debug for code path analysis.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const debug = require("debug")("eslint:code-path");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Gets id of a given segment.
+ * @param {CodePathSegment} segment - A segment to get.
+ * @returns {string} Id of the segment.
+ */
+/* istanbul ignore next */
+function getId(segment) { // eslint-disable-line require-jsdoc
+    return segment.id + (segment.reachable ? "" : "!");
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+
+    /**
+     * A flag that debug dumping is enabled or not.
+     * @type {boolean}
+     */
+    enabled: debug.enabled,
+
+    /**
+     * Dumps given objects.
+     *
+     * @param {...any} args - objects to dump.
+     * @returns {void}
+     */
+    dump: debug,
+
+    /**
+     * Dumps the current analyzing state.
+     *
+     * @param {ASTNode} node - A node to dump.
+     * @param {CodePathState} state - A state to dump.
+     * @param {boolean} leaving - A flag whether or not it's leaving
+     * @returns {void}
+     */
+    dumpState: !debug.enabled ? debug : /* istanbul ignore next */ function(node, state, leaving) {
+        for (let i = 0; i < state.currentSegments.length; ++i) {
+            const segInternal = state.currentSegments[i].internal;
+
+            if (leaving) {
+                segInternal.exitNodes.push(node);
+            } else {
+                segInternal.nodes.push(node);
+            }
+        }
+
+        debug([
+            `${state.currentSegments.map(getId).join(",")})`,
+            `${node.type}${leaving ? ":exit" : ""}`
+        ].join(" "));
+    },
+
+    /**
+     * Dumps a DOT code of a given code path.
+     * The DOT code can be visialized with Graphvis.
+     *
+     * @param {CodePath} codePath - A code path to dump.
+     * @returns {void}
+     * @see http://www.graphviz.org
+     * @see http://www.webgraphviz.com
+     */
+    dumpDot: !debug.enabled ? debug : /* istanbul ignore next */ function(codePath) {
+        let text =
+            "\n" +
+            "digraph {\n" +
+            "node[shape=box,style=\"rounded,filled\",fillcolor=white];\n" +
+            "initial[label=\"\",shape=circle,style=filled,fillcolor=black,width=0.25,height=0.25];\n";
+
+        if (codePath.returnedSegments.length > 0) {
+            text += "final[label=\"\",shape=doublecircle,style=filled,fillcolor=black,width=0.25,height=0.25];\n";
+        }
+        if (codePath.thrownSegments.length > 0) {
+            text += "thrown[label=\"✘\",shape=circle,width=0.3,height=0.3,fixedsize];\n";
+        }
+
+        const traceMap = Object.create(null);
+        const arrows = this.makeDotArrows(codePath, traceMap);
+
+        for (const id in traceMap) { // eslint-disable-line guard-for-in
+            const segment = traceMap[id];
+
+            text += `${id}[`;
+
+            if (segment.reachable) {
+                text += "label=\"";
+            } else {
+                text += "style=\"rounded,dashed,filled\",fillcolor=\"#FF9800\",label=\"<<unreachable>>\\n";
+            }
+
+            if (segment.internal.nodes.length > 0 || segment.internal.exitNodes.length > 0) {
+                text += [].concat(
+                    segment.internal.nodes.map(node => {
+                        switch (node.type) {
+                            case "Identifier": return `${node.type} (${node.name})`;
+                            case "Literal": return `${node.type} (${node.value})`;
+                            default: return node.type;
+                        }
+                    }),
+                    segment.internal.exitNodes.map(node => {
+                        switch (node.type) {
+                            case "Identifier": return `${node.type}:exit (${node.name})`;
+                            case "Literal": return `${node.type}:exit (${node.value})`;
+                            default: return `${node.type}:exit`;
+                        }
+                    })
+                ).join("\\n");
+            } else {
+                text += "????";
+            }
+
+            text += "\"];\n";
+        }
+
+        text += `${arrows}\n`;
+        text += "}";
+        debug("DOT", text);
+    },
+
+    /**
+     * Makes a DOT code of a given code path.
+     * The DOT code can be visialized with Graphvis.
+     *
+     * @param {CodePath} codePath - A code path to make DOT.
+     * @param {Object} traceMap - Optional. A map to check whether or not segments had been done.
+     * @returns {string} A DOT code of the code path.
+     */
+    makeDotArrows(codePath, traceMap) {
+        const stack = [[codePath.initialSegment, 0]];
+        const done = traceMap || Object.create(null);
+        let lastId = codePath.initialSegment.id;
+        let text = `initial->${codePath.initialSegment.id}`;
+
+        while (stack.length > 0) {
+            const item = stack.pop();
+            const segment = item[0];
+            const index = item[1];
+
+            if (done[segment.id] && index === 0) {
+                continue;
+            }
+            done[segment.id] = segment;
+
+            const nextSegment = segment.allNextSegments[index];
+
+            if (!nextSegment) {
+                continue;
+            }
+
+            if (lastId === segment.id) {
+                text += `->${nextSegment.id}`;
+            } else {
+                text += `;\n${segment.id}->${nextSegment.id}`;
+            }
+            lastId = nextSegment.id;
+
+            stack.unshift([segment, 1 + index]);
+            stack.push([nextSegment, 0]);
+        }
+
+        codePath.returnedSegments.forEach(finalSegment => {
+            if (lastId === finalSegment.id) {
+                text += "->final";
+            } else {
+                text += `;\n${finalSegment.id}->final`;
+            }
+            lastId = null;
+        });
+
+        codePath.thrownSegments.forEach(finalSegment => {
+            if (lastId === finalSegment.id) {
+                text += "->thrown";
+            } else {
+                text += `;\n${finalSegment.id}->thrown`;
+            }
+            lastId = null;
+        });
+
+        return `${text};`;
+    }
+};

node_modules/eslint/lib/code-path-analysis/fork-context.js

@@ -0,0 +1,260 @@
+/**
+ * @fileoverview A class to operate forking.
+ *
+ * This is state of forking.
+ * This has a fork list and manages it.
+ *
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const assert = require("assert"),
+    CodePathSegment = require("./code-path-segment");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Gets whether or not a given segment is reachable.
+ *
+ * @param {CodePathSegment} segment - A segment to get.
+ * @returns {boolean} `true` if the segment is reachable.
+ */
+function isReachable(segment) {
+    return segment.reachable;
+}
+
+/**
+ * Creates new segments from the specific range of `context.segmentsList`.
+ *
+ * When `context.segmentsList` is `[[a, b], [c, d], [e, f]]`, `begin` is `0`, and
+ * `end` is `-1`, this creates `[g, h]`. This `g` is from `a`, `c`, and `e`.
+ * This `h` is from `b`, `d`, and `f`.
+ *
+ * @param {ForkContext} context - An instance.
+ * @param {number} begin - The first index of the previous segments.
+ * @param {number} end - The last index of the previous segments.
+ * @param {Function} create - A factory function of new segments.
+ * @returns {CodePathSegment[]} New segments.
+ */
+function makeSegments(context, begin, end, create) {
+    const list = context.segmentsList;
+
+    const normalizedBegin = begin >= 0 ? begin : list.length + begin;
+    const normalizedEnd = end >= 0 ? end : list.length + end;
+
+    const segments = [];
+
+    for (let i = 0; i < context.count; ++i) {
+        const allPrevSegments = [];
+
+        for (let j = normalizedBegin; j <= normalizedEnd; ++j) {
+            allPrevSegments.push(list[j][i]);
+        }
+
+        segments.push(create(context.idGenerator.next(), allPrevSegments));
+    }
+
+    return segments;
+}
+
+/**
+ * `segments` becomes doubly in a `finally` block. Then if a code path exits by a
+ * control statement (such as `break`, `continue`) from the `finally` block, the
+ * destination's segments may be half of the source segments. In that case, this
+ * merges segments.
+ *
+ * @param {ForkContext} context - An instance.
+ * @param {CodePathSegment[]} segments - Segments to merge.
+ * @returns {CodePathSegment[]} The merged segments.
+ */
+function mergeExtraSegments(context, segments) {
+    let currentSegments = segments;
+
+    while (currentSegments.length > context.count) {
+        const merged = [];
+
+        for (let i = 0, length = currentSegments.length / 2 | 0; i < length; ++i) {
+            merged.push(CodePathSegment.newNext(
+                context.idGenerator.next(),
+                [currentSegments[i], currentSegments[i + length]]
+            ));
+        }
+        currentSegments = merged;
+    }
+    return currentSegments;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * A class to manage forking.
+ */
+class ForkContext {
+
+    /**
+     * @param {IdGenerator} idGenerator - An identifier generator for segments.
+     * @param {ForkContext|null} upper - An upper fork context.
+     * @param {number} count - A number of parallel segments.
+     */
+    constructor(idGenerator, upper, count) {
+        this.idGenerator = idGenerator;
+        this.upper = upper;
+        this.count = count;
+        this.segmentsList = [];
+    }
+
+    /**
+     * The head segments.
+     * @type {CodePathSegment[]}
+     */
+    get head() {
+        const list = this.segmentsList;
+
+        return list.length === 0 ? [] : list[list.length - 1];
+    }
+
+    /**
+     * A flag which shows empty.
+     * @type {boolean}
+     */
+    get empty() {
+        return this.segmentsList.length === 0;
+    }
+
+    /**
+     * A flag which shows reachable.
+     * @type {boolean}
+     */
+    get reachable() {
+        const segments = this.head;
+
+        return segments.length > 0 && segments.some(isReachable);
+    }
+
+    /**
+     * Creates new segments from this context.
+     *
+     * @param {number} begin - The first index of previous segments.
+     * @param {number} end - The last index of previous segments.
+     * @returns {CodePathSegment[]} New segments.
+     */
+    makeNext(begin, end) {
+        return makeSegments(this, begin, end, CodePathSegment.newNext);
+    }
+
+    /**
+     * Creates new segments from this context.
+     * The new segments is always unreachable.
+     *
+     * @param {number} begin - The first index of previous segments.
+     * @param {number} end - The last index of previous segments.
+     * @returns {CodePathSegment[]} New segments.
+     */
+    makeUnreachable(begin, end) {
+        return makeSegments(this, begin, end, CodePathSegment.newUnreachable);
+    }
+
+    /**
+     * Creates new segments from this context.
+     * The new segments don't have connections for previous segments.
+     * But these inherit the reachable flag from this context.
+     *
+     * @param {number} begin - The first index of previous segments.
+     * @param {number} end - The last index of previous segments.
+     * @returns {CodePathSegment[]} New segments.
+     */
+    makeDisconnected(begin, end) {
+        return makeSegments(this, begin, end, CodePathSegment.newDisconnected);
+    }
+
+    /**
+     * Adds segments into this context.
+     * The added segments become the head.
+     *
+     * @param {CodePathSegment[]} segments - Segments to add.
+     * @returns {void}
+     */
+    add(segments) {
+        assert(segments.length >= this.count, `${segments.length} >= ${this.count}`);
+
+        this.segmentsList.push(mergeExtraSegments(this, segments));
+    }
+
+    /**
+     * Replaces the head segments with given segments.
+     * The current head segments are removed.
+     *
+     * @param {CodePathSegment[]} segments - Segments to add.
+     * @returns {void}
+     */
+    replaceHead(segments) {
+        assert(segments.length >= this.count, `${segments.length} >= ${this.count}`);
+
+        this.segmentsList.splice(-1, 1, mergeExtraSegments(this, segments));
+    }
+
+    /**
+     * Adds all segments of a given fork context into this context.
+     *
+     * @param {ForkContext} context - A fork context to add.
+     * @returns {void}
+     */
+    addAll(context) {
+        assert(context.count === this.count);
+
+        const source = context.segmentsList;
+
+        for (let i = 0; i < source.length; ++i) {
+            this.segmentsList.push(source[i]);
+        }
+    }
+
+    /**
+     * Clears all secments in this context.
+     *
+     * @returns {void}
+     */
+    clear() {
+        this.segmentsList = [];
+    }
+
+    /**
+     * Creates the root fork context.
+     *
+     * @param {IdGenerator} idGenerator - An identifier generator for segments.
+     * @returns {ForkContext} New fork context.
+     */
+    static newRoot(idGenerator) {
+        const context = new ForkContext(idGenerator, null, 1);
+
+        context.add([CodePathSegment.newRoot(idGenerator.next())]);
+
+        return context;
+    }
+
+    /**
+     * Creates an empty fork context preceded by a given context.
+     *
+     * @param {ForkContext} parentContext - The parent fork context.
+     * @param {boolean} forkLeavingPath - A flag which shows inside of `finally` block.
+     * @returns {ForkContext} New fork context.
+     */
+    static newEmpty(parentContext, forkLeavingPath) {
+        return new ForkContext(
+            parentContext.idGenerator,
+            parentContext,
+            (forkLeavingPath ? 2 : 1) * parentContext.count
+        );
+    }
+}
+
+module.exports = ForkContext;

node_modules/eslint/lib/code-path-analysis/id-generator.js

@@ -0,0 +1,46 @@
+/**
+ * @fileoverview A class of identifiers generator for code path segments.
+ *
+ * Each rule uses the identifier of code path segments to store additional
+ * information of the code path.
+ *
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * A generator for unique ids.
+ */
+class IdGenerator {
+
+    /**
+     * @param {string} prefix - Optional. A prefix of generated ids.
+     */
+    constructor(prefix) {
+        this.prefix = String(prefix);
+        this.n = 0;
+    }
+
+    /**
+     * Generates id.
+     *
+     * @returns {string} A generated id.
+     */
+    next() {
+        this.n = 1 + this.n | 0;
+
+        /* istanbul ignore if */
+        if (this.n < 0) {
+            this.n = 1;
+        }
+
+        return this.prefix + this.n;
+    }
+}
+
+module.exports = IdGenerator;

node_modules/eslint/lib/config.js

@@ -0,0 +1,364 @@
+/**
+ * @fileoverview Responsible for loading config files
+ * @author Seth McLaughlin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const path = require("path"),
+    os = require("os"),
+    ConfigOps = require("./config/config-ops"),
+    ConfigFile = require("./config/config-file"),
+    ConfigCache = require("./config/config-cache"),
+    Plugins = require("./config/plugins"),
+    FileFinder = require("./util/file-finder"),
+    isResolvable = require("is-resolvable");
+
+const debug = require("debug")("eslint:config");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const PERSONAL_CONFIG_DIR = os.homedir();
+const SUBCONFIG_SEP = ":";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines if any rules were explicitly passed in as options.
+ * @param {Object} options The options used to create our configuration.
+ * @returns {boolean} True if rules were passed in as options, false otherwise.
+ * @private
+ */
+function hasRules(options) {
+    return options.rules && Object.keys(options.rules).length > 0;
+}
+
+//------------------------------------------------------------------------------
+// API
+//------------------------------------------------------------------------------
+
+/**
+ * Configuration class
+ */
+class Config {
+
+    /**
+     * @param {Object} providedOptions Options to be passed in
+     * @param {Linter} linterContext Linter instance object
+     */
+    constructor(providedOptions, linterContext) {
+        const options = providedOptions || {};
+
+        this.linterContext = linterContext;
+        this.plugins = new Plugins(linterContext.environments, linterContext.rules);
+
+        this.options = options;
+        this.ignore = options.ignore;
+        this.ignorePath = options.ignorePath;
+        this.parser = options.parser;
+        this.parserOptions = options.parserOptions || {};
+
+        this.configCache = new ConfigCache();
+
+        this.baseConfig = options.baseConfig
+            ? ConfigOps.merge({}, ConfigFile.loadObject(options.baseConfig, this))
+            : { rules: {} };
+        this.baseConfig.filePath = "";
+        this.baseConfig.baseDirectory = this.options.cwd;
+
+        this.configCache.setConfig(this.baseConfig.filePath, this.baseConfig);
+        this.configCache.setMergedVectorConfig(this.baseConfig.filePath, this.baseConfig);
+
+        this.useEslintrc = (options.useEslintrc !== false);
+
+        this.env = (options.envs || []).reduce((envs, name) => {
+            envs[name] = true;
+            return envs;
+        }, {});
+
+        /*
+         * Handle declared globals.
+         * For global variable foo, handle "foo:false" and "foo:true" to set
+         * whether global is writable.
+         * If user declares "foo", convert to "foo:false".
+         */
+        this.globals = (options.globals || []).reduce((globals, def) => {
+            const parts = def.split(SUBCONFIG_SEP);
+
+            globals[parts[0]] = (parts.length > 1 && parts[1] === "true");
+
+            return globals;
+        }, {});
+
+        this.loadSpecificConfig(options.configFile);
+
+        // Empty values in configs don't merge properly
+        const cliConfigOptions = {
+            env: this.env,
+            rules: this.options.rules,
+            globals: this.globals,
+            parserOptions: this.parserOptions,
+            plugins: this.options.plugins
+        };
+
+        this.cliConfig = {};
+        Object.keys(cliConfigOptions).forEach(configKey => {
+            const value = cliConfigOptions[configKey];
+
+            if (value) {
+                this.cliConfig[configKey] = value;
+            }
+        });
+    }
+
+    /**
+     * Loads the config options from a config specified on the command line.
+     * @param {string} [config] A shareable named config or path to a config file.
+     * @returns {void}
+     */
+    loadSpecificConfig(config) {
+        if (config) {
+            debug(`Using command line config ${config}`);
+            const isNamedConfig =
+                isResolvable(config) ||
+                isResolvable(`eslint-config-${config}`) ||
+                config.charAt(0) === "@";
+
+            this.specificConfig = ConfigFile.load(
+                isNamedConfig ? config : path.resolve(this.options.cwd, config),
+                this
+            );
+        }
+    }
+
+    /**
+     * Gets the personal config object from user's home directory.
+     * @returns {Object} the personal config object (null if there is no personal config)
+     * @private
+     */
+    getPersonalConfig() {
+        if (typeof this.personalConfig === "undefined") {
+            let config;
+            const filename = ConfigFile.getFilenameForDirectory(PERSONAL_CONFIG_DIR);
+
+            if (filename) {
+                debug("Using personal config");
+                config = ConfigFile.load(filename, this);
+            }
+
+            this.personalConfig = config || null;
+        }
+
+        return this.personalConfig;
+    }
+
+    /**
+     * Builds a hierarchy of config objects, including the base config, all local configs from the directory tree,
+     * and a config file specified on the command line, if applicable.
+     * @param {string} directory a file in whose directory we start looking for a local config
+     * @returns {Object[]} The config objects, in ascending order of precedence
+     * @private
+     */
+    getConfigHierarchy(directory) {
+        debug(`Constructing config file hierarchy for ${directory}`);
+
+        // Step 1: Always include baseConfig
+        let configs = [this.baseConfig];
+
+        // Step 2: Add user-specified config from .eslintrc.* and package.json files
+        if (this.useEslintrc) {
+            debug("Using .eslintrc and package.json files");
+            configs = configs.concat(this.getLocalConfigHierarchy(directory));
+        } else {
+            debug("Not using .eslintrc or package.json files");
+        }
+
+        // Step 3: Merge in command line config file
+        if (this.specificConfig) {
+            debug("Using command line config file");
+            configs.push(this.specificConfig);
+        }
+
+        return configs;
+    }
+
+    /**
+     * Gets a list of config objects extracted from local config files that apply to the current directory, in
+     * descending order, beginning with the config that is highest in the directory tree.
+     * @param {string} directory The directory to start looking in for local config files.
+     * @returns {Object[]} The shallow local config objects, in ascending order of precedence (closest to the current
+     * directory at the end), or an empty array if there are no local configs.
+     * @private
+     */
+    getLocalConfigHierarchy(directory) {
+        const localConfigFiles = this.findLocalConfigFiles(directory),
+            projectConfigPath = ConfigFile.getFilenameForDirectory(this.options.cwd),
+            searched = [],
+            configs = [];
+
+        for (const localConfigFile of localConfigFiles) {
+            const localConfigDirectory = path.dirname(localConfigFile);
+            const localConfigHierarchyCache = this.configCache.getHierarchyLocalConfigs(localConfigDirectory);
+
+            if (localConfigHierarchyCache) {
+                const localConfigHierarchy = localConfigHierarchyCache.concat(configs);
+
+                this.configCache.setHierarchyLocalConfigs(searched, localConfigHierarchy);
+                return localConfigHierarchy;
+            }
+
+            /*
+             * Don't consider the personal config file in the home directory,
+             * except if the home directory is the same as the current working directory
+             */
+            if (localConfigDirectory === PERSONAL_CONFIG_DIR && localConfigFile !== projectConfigPath) {
+                continue;
+            }
+
+            debug(`Loading ${localConfigFile}`);
+            const localConfig = ConfigFile.load(localConfigFile, this);
+
+            // Ignore empty config files
+            if (!localConfig) {
+                continue;
+            }
+
+            debug(`Using ${localConfigFile}`);
+            configs.unshift(localConfig);
+            searched.push(localConfigDirectory);
+
+            // Stop traversing if a config is found with the root flag set
+            if (localConfig.root) {
+                break;
+            }
+        }
+
+        if (!configs.length && !this.specificConfig) {
+
+            // Fall back on the personal config from ~/.eslintrc
+            debug("Using personal config file");
+            const personalConfig = this.getPersonalConfig();
+
+            if (personalConfig) {
+                configs.unshift(personalConfig);
+            } else if (!hasRules(this.options) && !this.options.baseConfig) {
+
+                // No config file, no manual configuration, and no rules, so error.
+                const noConfigError = new Error("No ESLint configuration found.");
+
+                noConfigError.messageTemplate = "no-config-found";
+                noConfigError.messageData = {
+                    directory,
+                    filesExamined: localConfigFiles
+                };
+
+                throw noConfigError;
+            }
+        }
+
+        // Set the caches for the parent directories
+        this.configCache.setHierarchyLocalConfigs(searched, configs);
+
+        return configs;
+    }
+
+    /**
+     * Gets the vector of applicable configs and subconfigs from the hierarchy for a given file. A vector is an array of
+     * entries, each of which in an object specifying a config file path and an array of override indices corresponding
+     * to entries in the config file's overrides section whose glob patterns match the specified file path; e.g., the
+     * vector entry { configFile: '/home/john/app/.eslintrc', matchingOverrides: [0, 2] } would indicate that the main
+     * project .eslintrc file and its first and third override blocks apply to the current file.
+     * @param {string} filePath The file path for which to build the hierarchy and config vector.
+     * @returns {Array<Object>} config vector applicable to the specified path
+     * @private
+     */
+    getConfigVector(filePath) {
+        const directory = filePath ? path.dirname(filePath) : this.options.cwd;
+
+        return this.getConfigHierarchy(directory).map(config => {
+            const vectorEntry = {
+                filePath: config.filePath,
+                matchingOverrides: []
+            };
+
+            if (config.overrides) {
+                const relativePath = path.relative(config.baseDirectory, filePath || directory);
+
+                config.overrides.forEach((override, i) => {
+                    if (ConfigOps.pathMatchesGlobs(relativePath, override.files, override.excludedFiles)) {
+                        vectorEntry.matchingOverrides.push(i);
+                    }
+                });
+            }
+
+            return vectorEntry;
+        });
+    }
+
+    /**
+     * Finds local config files from the specified directory and its parent directories.
+     * @param {string} directory The directory to start searching from.
+     * @returns {GeneratorFunction} The paths of local config files found.
+     */
+    findLocalConfigFiles(directory) {
+        if (!this.localConfigFinder) {
+            this.localConfigFinder = new FileFinder(ConfigFile.CONFIG_FILES, this.options.cwd);
+        }
+
+        return this.localConfigFinder.findAllInDirectoryAndParents(directory);
+    }
+
+    /**
+     * Builds the authoritative config object for the specified file path by merging the hierarchy of config objects
+     * that apply to the current file, including the base config (conf/eslint-recommended), the user's personal config
+     * from their homedir, all local configs from the directory tree, any specific config file passed on the command
+     * line, any configuration overrides set directly on the command line, and finally the environment configs
+     * (conf/environments).
+     * @param {string} filePath a file in whose directory we start looking for a local config
+     * @returns {Object} config object
+     */
+    getConfig(filePath) {
+        const vector = this.getConfigVector(filePath);
+        let config = this.configCache.getMergedConfig(vector);
+
+        if (config) {
+            debug("Using config from cache");
+            return config;
+        }
+
+        // Step 1: Merge in the filesystem configurations (base, local, and personal)
+        config = ConfigOps.getConfigFromVector(vector, this.configCache);
+
+        // Step 2: Merge in command line configurations
+        config = ConfigOps.merge(config, this.cliConfig);
+
+        if (this.cliConfig.plugins) {
+            this.plugins.loadAll(this.cliConfig.plugins);
+        }
+
+        /*
+         * Step 3: Override parser only if it is passed explicitly through the command line
+         * or if it's not defined yet (because the final object will at least have the parser key)
+         */
+        if (this.parser || !config.parser) {
+            config = ConfigOps.merge(config, { parser: this.parser });
+        }
+
+        // Step 4: Apply environments to the config
+        config = ConfigOps.applyEnvironments(config, this.linterContext.environments);
+
+        this.configCache.setMergedConfig(vector, config);
+
+        return config;
+    }
+}
+
+module.exports = Config;

node_modules/eslint/lib/config/autoconfig.js

@@ -0,0 +1,359 @@
+/**
+ * @fileoverview Used for creating a suggested configuration based on project code.
+ * @author Ian VanSchooten
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash"),
+    Linter = require("../linter"),
+    configRule = require("./config-rule"),
+    ConfigOps = require("./config-ops"),
+    recConfig = require("../../conf/eslint-recommended");
+
+const debug = require("debug")("eslint:autoconfig");
+const linter = new Linter();
+
+//------------------------------------------------------------------------------
+// Data
+//------------------------------------------------------------------------------
+
+const MAX_CONFIG_COMBINATIONS = 17, // 16 combinations + 1 for severity only
+    RECOMMENDED_CONFIG_NAME = "eslint:recommended";
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+
+/**
+ * Information about a rule configuration, in the context of a Registry.
+ *
+ * @typedef {Object}     registryItem
+ * @param   {ruleConfig} config        A valid configuration for the rule
+ * @param   {number}     specificity   The number of elements in the ruleConfig array
+ * @param   {number}     errorCount    The number of errors encountered when linting with the config
+ */
+
+/**
+ * This callback is used to measure execution status in a progress bar
+ * @callback progressCallback
+ * @param {number} The total number of times the callback will be called.
+ */
+
+/**
+ * Create registryItems for rules
+ * @param   {rulesConfig} rulesConfig Hash of rule names and arrays of ruleConfig items
+ * @returns {Object}                  registryItems for each rule in provided rulesConfig
+ */
+function makeRegistryItems(rulesConfig) {
+    return Object.keys(rulesConfig).reduce((accumulator, ruleId) => {
+        accumulator[ruleId] = rulesConfig[ruleId].map(config => ({
+            config,
+            specificity: config.length || 1,
+            errorCount: void 0
+        }));
+        return accumulator;
+    }, {});
+}
+
+/**
+ * Creates an object in which to store rule configs and error counts
+ *
+ * Unless a rulesConfig is provided at construction, the registry will not contain
+ * any rules, only methods.  This will be useful for building up registries manually.
+ *
+ * Registry class
+ */
+class Registry {
+
+    /**
+     * @param {rulesConfig} [rulesConfig] Hash of rule names and arrays of possible configurations
+     */
+    constructor(rulesConfig) {
+        this.rules = (rulesConfig) ? makeRegistryItems(rulesConfig) : {};
+    }
+
+    /**
+     * Populate the registry with core rule configs.
+     *
+     * It will set the registry's `rule` property to an object having rule names
+     * as keys and an array of registryItems as values.
+     *
+     * @returns {void}
+     */
+    populateFromCoreRules() {
+        const rulesConfig = configRule.createCoreRuleConfigs();
+
+        this.rules = makeRegistryItems(rulesConfig);
+    }
+
+    /**
+     * Creates sets of rule configurations which can be used for linting
+     * and initializes registry errors to zero for those configurations (side effect).
+     *
+     * This combines as many rules together as possible, such that the first sets
+     * in the array will have the highest number of rules configured, and later sets
+     * will have fewer and fewer, as not all rules have the same number of possible
+     * configurations.
+     *
+     * The length of the returned array will be <= MAX_CONFIG_COMBINATIONS.
+     *
+     * @param   {Object}   registry The autoconfig registry
+     * @returns {Object[]}          "rules" configurations to use for linting
+     */
+    buildRuleSets() {
+        let idx = 0;
+        const ruleIds = Object.keys(this.rules),
+            ruleSets = [];
+
+        /**
+         * Add a rule configuration from the registry to the ruleSets
+         *
+         * This is broken out into its own function so that it doesn't need to be
+         * created inside of the while loop.
+         *
+         * @param   {string} rule The ruleId to add.
+         * @returns {void}
+         */
+        const addRuleToRuleSet = function(rule) {
+
+            /*
+             * This check ensures that there is a rule configuration and that
+             * it has fewer than the max combinations allowed.
+             * If it has too many configs, we will only use the most basic of
+             * the possible configurations.
+             */
+            const hasFewCombos = (this.rules[rule].length <= MAX_CONFIG_COMBINATIONS);
+
+            if (this.rules[rule][idx] && (hasFewCombos || this.rules[rule][idx].specificity <= 2)) {
+
+                /*
+                 * If the rule has too many possible combinations, only take
+                 * simple ones, avoiding objects.
+                 */
+                if (!hasFewCombos && typeof this.rules[rule][idx].config[1] === "object") {
+                    return;
+                }
+
+                ruleSets[idx] = ruleSets[idx] || {};
+                ruleSets[idx][rule] = this.rules[rule][idx].config;
+
+                /*
+                 * Initialize errorCount to zero, since this is a config which
+                 * will be linted.
+                 */
+                this.rules[rule][idx].errorCount = 0;
+            }
+        }.bind(this);
+
+        while (ruleSets.length === idx) {
+            ruleIds.forEach(addRuleToRuleSet);
+            idx += 1;
+        }
+
+        return ruleSets;
+    }
+
+    /**
+     * Remove all items from the registry with a non-zero number of errors
+     *
+     * Note: this also removes rule configurations which were not linted
+     * (meaning, they have an undefined errorCount).
+     *
+     * @returns {void}
+     */
+    stripFailingConfigs() {
+        const ruleIds = Object.keys(this.rules),
+            newRegistry = new Registry();
+
+        newRegistry.rules = Object.assign({}, this.rules);
+        ruleIds.forEach(ruleId => {
+            const errorFreeItems = newRegistry.rules[ruleId].filter(registryItem => (registryItem.errorCount === 0));
+
+            if (errorFreeItems.length > 0) {
+                newRegistry.rules[ruleId] = errorFreeItems;
+            } else {
+                delete newRegistry.rules[ruleId];
+            }
+        });
+
+        return newRegistry;
+    }
+
+    /**
+     * Removes rule configurations which were not included in a ruleSet
+     *
+     * @returns {void}
+     */
+    stripExtraConfigs() {
+        const ruleIds = Object.keys(this.rules),
+            newRegistry = new Registry();
+
+        newRegistry.rules = Object.assign({}, this.rules);
+        ruleIds.forEach(ruleId => {
+            newRegistry.rules[ruleId] = newRegistry.rules[ruleId].filter(registryItem => (typeof registryItem.errorCount !== "undefined"));
+        });
+
+        return newRegistry;
+    }
+
+    /**
+     * Creates a registry of rules which had no error-free configs.
+     * The new registry is intended to be analyzed to determine whether its rules
+     * should be disabled or set to warning.
+     *
+     * @returns {Registry}  A registry of failing rules.
+     */
+    getFailingRulesRegistry() {
+        const ruleIds = Object.keys(this.rules),
+            failingRegistry = new Registry();
+
+        ruleIds.forEach(ruleId => {
+            const failingConfigs = this.rules[ruleId].filter(registryItem => (registryItem.errorCount > 0));
+
+            if (failingConfigs && failingConfigs.length === this.rules[ruleId].length) {
+                failingRegistry.rules[ruleId] = failingConfigs;
+            }
+        });
+
+        return failingRegistry;
+    }
+
+    /**
+     * Create an eslint config for any rules which only have one configuration
+     * in the registry.
+     *
+     * @returns {Object} An eslint config with rules section populated
+     */
+    createConfig() {
+        const ruleIds = Object.keys(this.rules),
+            config = { rules: {} };
+
+        ruleIds.forEach(ruleId => {
+            if (this.rules[ruleId].length === 1) {
+                config.rules[ruleId] = this.rules[ruleId][0].config;
+            }
+        });
+
+        return config;
+    }
+
+    /**
+     * Return a cloned registry containing only configs with a desired specificity
+     *
+     * @param   {number} specificity Only keep configs with this specificity
+     * @returns {Registry}           A registry of rules
+     */
+    filterBySpecificity(specificity) {
+        const ruleIds = Object.keys(this.rules),
+            newRegistry = new Registry();
+
+        newRegistry.rules = Object.assign({}, this.rules);
+        ruleIds.forEach(ruleId => {
+            newRegistry.rules[ruleId] = this.rules[ruleId].filter(registryItem => (registryItem.specificity === specificity));
+        });
+
+        return newRegistry;
+    }
+
+    /**
+     * Lint SourceCodes against all configurations in the registry, and record results
+     *
+     * @param   {Object[]} sourceCodes  SourceCode objects for each filename
+     * @param   {Object}   config       ESLint config object
+     * @param   {progressCallback} [cb] Optional callback for reporting execution status
+     * @returns {Registry}              New registry with errorCount populated
+     */
+    lintSourceCode(sourceCodes, config, cb) {
+        let lintedRegistry = new Registry();
+
+        lintedRegistry.rules = Object.assign({}, this.rules);
+
+        const ruleSets = lintedRegistry.buildRuleSets();
+
+        lintedRegistry = lintedRegistry.stripExtraConfigs();
+
+        debug("Linting with all possible rule combinations");
+
+        const filenames = Object.keys(sourceCodes);
+        const totalFilesLinting = filenames.length * ruleSets.length;
+
+        filenames.forEach(filename => {
+            debug(`Linting file: ${filename}`);
+
+            let ruleSetIdx = 0;
+
+            ruleSets.forEach(ruleSet => {
+                const lintConfig = Object.assign({}, config, { rules: ruleSet });
+                const lintResults = linter.verify(sourceCodes[filename], lintConfig);
+
+                lintResults.forEach(result => {
+
+                    /*
+                     * It is possible that the error is from a configuration comment
+                     * in a linted file, in which case there may not be a config
+                     * set in this ruleSetIdx.
+                     * (https://github.com/eslint/eslint/issues/5992)
+                     * (https://github.com/eslint/eslint/issues/7860)
+                     */
+                    if (
+                        lintedRegistry.rules[result.ruleId] &&
+                        lintedRegistry.rules[result.ruleId][ruleSetIdx]
+                    ) {
+                        lintedRegistry.rules[result.ruleId][ruleSetIdx].errorCount += 1;
+                    }
+                });
+
+                ruleSetIdx += 1;
+
+                if (cb) {
+                    cb(totalFilesLinting); // eslint-disable-line callback-return
+                }
+            });
+
+            // Deallocate for GC
+            sourceCodes[filename] = null;
+        });
+
+        return lintedRegistry;
+    }
+}
+
+/**
+ * Extract rule configuration into eslint:recommended where possible.
+ *
+ * This will return a new config with `"extends": "eslint:recommended"` and
+ * only the rules which have configurations different from the recommended config.
+ *
+ * @param   {Object} config config object
+ * @returns {Object}        config object using `"extends": "eslint:recommended"`
+ */
+function extendFromRecommended(config) {
+    const newConfig = Object.assign({}, config);
+
+    ConfigOps.normalizeToStrings(newConfig);
+
+    const recRules = Object.keys(recConfig.rules).filter(ruleId => ConfigOps.isErrorSeverity(recConfig.rules[ruleId]));
+
+    recRules.forEach(ruleId => {
+        if (lodash.isEqual(recConfig.rules[ruleId], newConfig.rules[ruleId])) {
+            delete newConfig.rules[ruleId];
+        }
+    });
+    newConfig.extends = RECOMMENDED_CONFIG_NAME;
+    return newConfig;
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+    Registry,
+    extendFromRecommended
+};

node_modules/eslint/lib/config/config-cache.js

@@ -0,0 +1,130 @@
+/**
+ * @fileoverview Responsible for caching config files
+ * @author Sylvan Mably
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Get a string hash for a config vector
+ * @param {Array<Object>} vector config vector to hash
+ * @returns {string} hash of the vector values
+ * @private
+ */
+function hash(vector) {
+    return JSON.stringify(vector);
+}
+
+//------------------------------------------------------------------------------
+// API
+//------------------------------------------------------------------------------
+
+/**
+ * Configuration caching class
+ */
+module.exports = class ConfigCache {
+
+    constructor() {
+        this.configFullNameCache = new Map();
+        this.localHierarchyCache = new Map();
+        this.mergedVectorCache = new Map();
+        this.mergedCache = new Map();
+    }
+
+    /**
+     * Gets a config object from the cache for the specified config file path.
+     * @param {string} configFullName the name of the configuration as used in the eslint config(e.g. 'plugin:node/recommended'),
+     * or the absolute path to a config file. This should uniquely identify a config.
+     * @returns {Object|null} config object, if found in the cache, otherwise null
+     * @private
+     */
+    getConfig(configFullName) {
+        return this.configFullNameCache.get(configFullName);
+    }
+
+    /**
+     * Sets a config object in the cache for the specified config file path.
+     * @param {string} configFullName the name of the configuration as used in the eslint config(e.g. 'plugin:node/recommended'),
+     * or the absolute path to a config file. This should uniquely identify a config.
+     * @param {Object} config the config object to add to the cache
+     * @returns {void}
+     * @private
+     */
+    setConfig(configFullName, config) {
+        this.configFullNameCache.set(configFullName, config);
+    }
+
+    /**
+     * Gets a list of hierarchy-local config objects that apply to the specified directory.
+     * @param {string} directory the path to the directory
+     * @returns {Object[]|null} a list of config objects, if found in the cache, otherwise null
+     * @private
+     */
+    getHierarchyLocalConfigs(directory) {
+        return this.localHierarchyCache.get(directory);
+    }
+
+    /**
+     * For each of the supplied parent directories, sets the list of config objects for that directory to the
+     * appropriate subset of the supplied parent config objects.
+     * @param {string[]} parentDirectories a list of parent directories to add to the config cache
+     * @param {Object[]} parentConfigs a list of config objects that apply to the lowest directory in parentDirectories
+     * @returns {void}
+     * @private
+     */
+    setHierarchyLocalConfigs(parentDirectories, parentConfigs) {
+        parentDirectories.forEach((localConfigDirectory, i) => {
+            const directoryParentConfigs = parentConfigs.slice(0, parentConfigs.length - i);
+
+            this.localHierarchyCache.set(localConfigDirectory, directoryParentConfigs);
+        });
+    }
+
+    /**
+     * Gets a merged config object corresponding to the supplied vector.
+     * @param {Array<Object>} vector the vector to find a merged config for
+     * @returns {Object|null} a merged config object, if found in the cache, otherwise null
+     * @private
+     */
+    getMergedVectorConfig(vector) {
+        return this.mergedVectorCache.get(hash(vector));
+    }
+
+    /**
+     * Sets a merged config object in the cache for the supplied vector.
+     * @param {Array<Object>} vector the vector to save a merged config for
+     * @param {Object} config the merged config object to add to the cache
+     * @returns {void}
+     * @private
+     */
+    setMergedVectorConfig(vector, config) {
+        this.mergedVectorCache.set(hash(vector), config);
+    }
+
+    /**
+     * Gets a merged config object corresponding to the supplied vector, including configuration options from outside
+     * the vector.
+     * @param {Array<Object>} vector the vector to find a merged config for
+     * @returns {Object|null} a merged config object, if found in the cache, otherwise null
+     * @private
+     */
+    getMergedConfig(vector) {
+        return this.mergedCache.get(hash(vector));
+    }
+
+    /**
+     * Sets a merged config object in the cache for the supplied vector, including configuration options from outside
+     * the vector.
+     * @param {Array<Object>} vector the vector to save a merged config for
+     * @param {Object} config the merged config object to add to the cache
+     * @returns {void}
+     * @private
+     */
+    setMergedConfig(vector, config) {
+        this.mergedCache.set(hash(vector), config);
+    }
+};

node_modules/eslint/lib/config/config-file.js

@@ -0,0 +1,617 @@
+/**
+ * @fileoverview Helper to locate and load configuration files.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("fs"),
+    path = require("path"),
+    ConfigOps = require("./config-ops"),
+    validator = require("./config-validator"),
+    ModuleResolver = require("../util/module-resolver"),
+    naming = require("../util/naming"),
+    pathIsInside = require("path-is-inside"),
+    stripComments = require("strip-json-comments"),
+    stringify = require("json-stable-stringify-without-jsonify"),
+    requireUncached = require("require-uncached");
+
+const debug = require("debug")("eslint:config-file");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines sort order for object keys for json-stable-stringify
+ *
+ * see: https://github.com/samn/json-stable-stringify#cmp
+ *
+ * @param   {Object} a The first comparison object ({key: akey, value: avalue})
+ * @param   {Object} b The second comparison object ({key: bkey, value: bvalue})
+ * @returns {number}   1 or -1, used in stringify cmp method
+ */
+function sortByKey(a, b) {
+    return a.key > b.key ? 1 : -1;
+}
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+
+const CONFIG_FILES = [
+    ".eslintrc.js",
+    ".eslintrc.yaml",
+    ".eslintrc.yml",
+    ".eslintrc.json",
+    ".eslintrc",
+    "package.json"
+];
+
+const resolver = new ModuleResolver();
+
+/**
+ * Convenience wrapper for synchronously reading file contents.
+ * @param {string} filePath The filename to read.
+ * @returns {string} The file contents, with the BOM removed.
+ * @private
+ */
+function readFile(filePath) {
+    return fs.readFileSync(filePath, "utf8").replace(/^\ufeff/, "");
+}
+
+/**
+ * Determines if a given string represents a filepath or not using the same
+ * conventions as require(), meaning that the first character must be nonalphanumeric
+ * and not the @ sign which is used for scoped packages to be considered a file path.
+ * @param {string} filePath The string to check.
+ * @returns {boolean} True if it's a filepath, false if not.
+ * @private
+ */
+function isFilePath(filePath) {
+    return path.isAbsolute(filePath) || !/\w|@/.test(filePath.charAt(0));
+}
+
+/**
+ * Loads a YAML configuration from a file.
+ * @param {string} filePath The filename to load.
+ * @returns {Object} The configuration object from the file.
+ * @throws {Error} If the file cannot be read.
+ * @private
+ */
+function loadYAMLConfigFile(filePath) {
+    debug(`Loading YAML config file: ${filePath}`);
+
+    // lazy load YAML to improve performance when not used
+    const yaml = require("js-yaml");
+
+    try {
+
+        // empty YAML file can be null, so always use
+        return yaml.safeLoad(readFile(filePath)) || {};
+    } catch (e) {
+        debug(`Error reading YAML file: ${filePath}`);
+        e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
+        throw e;
+    }
+}
+
+/**
+ * Loads a JSON configuration from a file.
+ * @param {string} filePath The filename to load.
+ * @returns {Object} The configuration object from the file.
+ * @throws {Error} If the file cannot be read.
+ * @private
+ */
+function loadJSONConfigFile(filePath) {
+    debug(`Loading JSON config file: ${filePath}`);
+
+    try {
+        return JSON.parse(stripComments(readFile(filePath)));
+    } catch (e) {
+        debug(`Error reading JSON file: ${filePath}`);
+        e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
+        e.messageTemplate = "failed-to-read-json";
+        e.messageData = {
+            path: filePath,
+            message: e.message
+        };
+        throw e;
+    }
+}
+
+/**
+ * Loads a legacy (.eslintrc) configuration from a file.
+ * @param {string} filePath The filename to load.
+ * @returns {Object} The configuration object from the file.
+ * @throws {Error} If the file cannot be read.
+ * @private
+ */
+function loadLegacyConfigFile(filePath) {
+    debug(`Loading config file: ${filePath}`);
+
+    // lazy load YAML to improve performance when not used
+    const yaml = require("js-yaml");
+
+    try {
+        return yaml.safeLoad(stripComments(readFile(filePath))) || /* istanbul ignore next */ {};
+    } catch (e) {
+        debug(`Error reading YAML file: ${filePath}`);
+        e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
+        throw e;
+    }
+}
+
+/**
+ * Loads a JavaScript configuration from a file.
+ * @param {string} filePath The filename to load.
+ * @returns {Object} The configuration object from the file.
+ * @throws {Error} If the file cannot be read.
+ * @private
+ */
+function loadJSConfigFile(filePath) {
+    debug(`Loading JS config file: ${filePath}`);
+    try {
+        return requireUncached(filePath);
+    } catch (e) {
+        debug(`Error reading JavaScript file: ${filePath}`);
+        e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
+        throw e;
+    }
+}
+
+/**
+ * Loads a configuration from a package.json file.
+ * @param {string} filePath The filename to load.
+ * @returns {Object} The configuration object from the file.
+ * @throws {Error} If the file cannot be read.
+ * @private
+ */
+function loadPackageJSONConfigFile(filePath) {
+    debug(`Loading package.json config file: ${filePath}`);
+    try {
+        return loadJSONConfigFile(filePath).eslintConfig || null;
+    } catch (e) {
+        debug(`Error reading package.json file: ${filePath}`);
+        e.message = `Cannot read config file: ${filePath}\nError: ${e.message}`;
+        throw e;
+    }
+}
+
+/**
+ * Creates an error to notify about a missing config to extend from.
+ * @param {string} configName The name of the missing config.
+ * @returns {Error} The error object to throw
+ * @private
+ */
+function configMissingError(configName) {
+    const error = new Error(`Failed to load config "${configName}" to extend from.`);
+
+    error.messageTemplate = "extend-config-missing";
+    error.messageData = {
+        configName
+    };
+    return error;
+}
+
+/**
+ * Loads a configuration file regardless of the source. Inspects the file path
+ * to determine the correctly way to load the config file.
+ * @param {Object} file The path to the configuration.
+ * @returns {Object} The configuration information.
+ * @private
+ */
+function loadConfigFile(file) {
+    const filePath = file.filePath;
+    let config;
+
+    switch (path.extname(filePath)) {
+        case ".js":
+            config = loadJSConfigFile(filePath);
+            if (file.configName) {
+                config = config.configs[file.configName];
+                if (!config) {
+                    throw configMissingError(file.configFullName);
+                }
+            }
+            break;
+
+        case ".json":
+            if (path.basename(filePath) === "package.json") {
+                config = loadPackageJSONConfigFile(filePath);
+                if (config === null) {
+                    return null;
+                }
+            } else {
+                config = loadJSONConfigFile(filePath);
+            }
+            break;
+
+        case ".yaml":
+        case ".yml":
+            config = loadYAMLConfigFile(filePath);
+            break;
+
+        default:
+            config = loadLegacyConfigFile(filePath);
+    }
+
+    return ConfigOps.merge(ConfigOps.createEmptyConfig(), config);
+}
+
+/**
+ * Writes a configuration file in JSON format.
+ * @param {Object} config The configuration object to write.
+ * @param {string} filePath The filename to write to.
+ * @returns {void}
+ * @private
+ */
+function writeJSONConfigFile(config, filePath) {
+    debug(`Writing JSON config file: ${filePath}`);
+
+    const content = stringify(config, { cmp: sortByKey, space: 4 });
+
+    fs.writeFileSync(filePath, content, "utf8");
+}
+
+/**
+ * Writes a configuration file in YAML format.
+ * @param {Object} config The configuration object to write.
+ * @param {string} filePath The filename to write to.
+ * @returns {void}
+ * @private
+ */
+function writeYAMLConfigFile(config, filePath) {
+    debug(`Writing YAML config file: ${filePath}`);
+
+    // lazy load YAML to improve performance when not used
+    const yaml = require("js-yaml");
+
+    const content = yaml.safeDump(config, { sortKeys: true });
+
+    fs.writeFileSync(filePath, content, "utf8");
+}
+
+/**
+ * Writes a configuration file in JavaScript format.
+ * @param {Object} config The configuration object to write.
+ * @param {string} filePath The filename to write to.
+ * @returns {void}
+ * @private
+ */
+function writeJSConfigFile(config, filePath) {
+    debug(`Writing JS config file: ${filePath}`);
+
+    const content = `module.exports = ${stringify(config, { cmp: sortByKey, space: 4 })};`;
+
+    fs.writeFileSync(filePath, content, "utf8");
+}
+
+/**
+ * Writes a configuration file.
+ * @param {Object} config The configuration object to write.
+ * @param {string} filePath The filename to write to.
+ * @returns {void}
+ * @throws {Error} When an unknown file type is specified.
+ * @private
+ */
+function write(config, filePath) {
+    switch (path.extname(filePath)) {
+        case ".js":
+            writeJSConfigFile(config, filePath);
+            break;
+
+        case ".json":
+            writeJSONConfigFile(config, filePath);
+            break;
+
+        case ".yaml":
+        case ".yml":
+            writeYAMLConfigFile(config, filePath);
+            break;
+
+        default:
+            throw new Error("Can't write to unknown file type.");
+    }
+}
+
+/**
+ * Determines the base directory for node packages referenced in a config file.
+ * This does not include node_modules in the path so it can be used for all
+ * references relative to a config file.
+ * @param {string} configFilePath The config file referencing the file.
+ * @returns {string} The base directory for the file path.
+ * @private
+ */
+function getBaseDir(configFilePath) {
+
+    // calculates the path of the project including ESLint as dependency
+    const projectPath = path.resolve(__dirname, "../../../");
+
+    if (configFilePath && pathIsInside(configFilePath, projectPath)) {
+
+        // be careful of https://github.com/substack/node-resolve/issues/78
+        return path.join(path.resolve(configFilePath));
+    }
+
+    /*
+     * default to ESLint project path since it's unlikely that plugins will be
+     * in this directory
+     */
+    return path.join(projectPath);
+}
+
+/**
+ * Determines the lookup path, including node_modules, for package
+ * references relative to a config file.
+ * @param {string} configFilePath The config file referencing the file.
+ * @returns {string} The lookup path for the file path.
+ * @private
+ */
+function getLookupPath(configFilePath) {
+    const basedir = getBaseDir(configFilePath);
+
+    return path.join(basedir, "node_modules");
+}
+
+/**
+ * Resolves a eslint core config path
+ * @param {string} name The eslint config name.
+ * @returns {string} The resolved path of the config.
+ * @private
+ */
+function getEslintCoreConfigPath(name) {
+    if (name === "eslint:recommended") {
+
+        /*
+         * Add an explicit substitution for eslint:recommended to
+         * conf/eslint-recommended.js.
+         */
+        return path.resolve(__dirname, "../../conf/eslint-recommended.js");
+    }
+
+    if (name === "eslint:all") {
+
+        /*
+         * Add an explicit substitution for eslint:all to conf/eslint-all.js
+         */
+        return path.resolve(__dirname, "../../conf/eslint-all.js");
+    }
+
+    throw configMissingError(name);
+}
+
+/**
+ * Applies values from the "extends" field in a configuration file.
+ * @param {Object} config The configuration information.
+ * @param {Config} configContext Plugin context for the config instance
+ * @param {string} filePath The file path from which the configuration information
+ *      was loaded.
+ * @param {string} [relativeTo] The path to resolve relative to.
+ * @returns {Object} A new configuration object with all of the "extends" fields
+ *      loaded and merged.
+ * @private
+ */
+function applyExtends(config, configContext, filePath, relativeTo) {
+    let configExtends = config.extends;
+
+    // normalize into an array for easier handling
+    if (!Array.isArray(config.extends)) {
+        configExtends = [config.extends];
+    }
+
+    // Make the last element in an array take the highest precedence
+    return configExtends.reduceRight((previousValue, parentPath) => {
+        try {
+            let extensionPath;
+
+            if (parentPath.startsWith("eslint:")) {
+                extensionPath = getEslintCoreConfigPath(parentPath);
+            } else if (isFilePath(parentPath)) {
+
+                /*
+                 * If the `extends` path is relative, use the directory of the current configuration
+                 * file as the reference point. Otherwise, use as-is.
+                 */
+                extensionPath = (path.isAbsolute(parentPath)
+                    ? parentPath
+                    : path.join(relativeTo || path.dirname(filePath), parentPath)
+                );
+            } else {
+                extensionPath = parentPath;
+            }
+            debug(`Loading ${extensionPath}`);
+
+            // eslint-disable-next-line no-use-before-define
+            return ConfigOps.merge(load(extensionPath, configContext, relativeTo), previousValue);
+        } catch (e) {
+
+            /*
+             * If the file referenced by `extends` failed to load, add the path
+             * to the configuration file that referenced it to the error
+             * message so the user is able to see where it was referenced from,
+             * then re-throw.
+             */
+            e.message += `\nReferenced from: ${filePath}`;
+            throw e;
+        }
+
+    }, config);
+}
+
+/**
+ * Resolves a configuration file path into the fully-formed path, whether filename
+ * or package name.
+ * @param {string} filePath The filepath to resolve.
+ * @param {string} [relativeTo] The path to resolve relative to.
+ * @returns {Object} An object containing 3 properties:
+ * - 'filePath' (required) the resolved path that can be used directly to load the configuration.
+ * - 'configName' the name of the configuration inside the plugin.
+ * - 'configFullName' (required) the name of the configuration as used in the eslint config(e.g. 'plugin:node/recommended'),
+ *     or the absolute path to a config file. This should uniquely identify a config.
+ * @private
+ */
+function resolve(filePath, relativeTo) {
+    if (isFilePath(filePath)) {
+        const fullPath = path.resolve(relativeTo || "", filePath);
+
+        return { filePath: fullPath, configFullName: fullPath };
+    }
+    let normalizedPackageName;
+
+    if (filePath.startsWith("plugin:")) {
+        const configFullName = filePath;
+        const pluginName = filePath.slice(7, filePath.lastIndexOf("/"));
+        const configName = filePath.slice(filePath.lastIndexOf("/") + 1);
+
+        normalizedPackageName = naming.normalizePackageName(pluginName, "eslint-plugin");
+        debug(`Attempting to resolve ${normalizedPackageName}`);
+
+        return {
+            filePath: require.resolve(normalizedPackageName),
+            configName,
+            configFullName
+        };
+    }
+    normalizedPackageName = naming.normalizePackageName(filePath, "eslint-config");
+    debug(`Attempting to resolve ${normalizedPackageName}`);
+
+    return {
+        filePath: resolver.resolve(normalizedPackageName, getLookupPath(relativeTo)),
+        configFullName: filePath
+    };
+
+
+}
+
+/**
+ * Loads a configuration file from the given file path.
+ * @param {Object} resolvedPath The value from calling resolve() on a filename or package name.
+ * @param {Config} configContext Plugins context
+ * @returns {Object} The configuration information.
+ */
+function loadFromDisk(resolvedPath, configContext) {
+    const dirname = path.dirname(resolvedPath.filePath),
+        lookupPath = getLookupPath(dirname);
+    let config = loadConfigFile(resolvedPath);
+
+    if (config) {
+
+        // ensure plugins are properly loaded first
+        if (config.plugins) {
+            configContext.plugins.loadAll(config.plugins);
+        }
+
+        // include full path of parser if present
+        if (config.parser) {
+            if (isFilePath(config.parser)) {
+                config.parser = path.resolve(dirname || "", config.parser);
+            } else {
+                config.parser = resolver.resolve(config.parser, lookupPath);
+            }
+        }
+
+        const ruleMap = configContext.linterContext.getRules();
+
+        // validate the configuration before continuing
+        validator.validate(config, resolvedPath.configFullName, ruleMap.get.bind(ruleMap), configContext.linterContext.environments);
+
+        /*
+         * If an `extends` property is defined, it represents a configuration file to use as
+         * a "parent". Load the referenced file and merge the configuration recursively.
+         */
+        if (config.extends) {
+            config = applyExtends(config, configContext, resolvedPath.filePath, dirname);
+        }
+    }
+
+    return config;
+}
+
+/**
+ * Loads a config object, applying extends if present.
+ * @param {Object} configObject a config object to load
+ * @param {Config} configContext Context for the config instance
+ * @returns {Object} the config object with extends applied if present, or the passed config if not
+ * @private
+ */
+function loadObject(configObject, configContext) {
+    return configObject.extends ? applyExtends(configObject, configContext, "") : configObject;
+}
+
+/**
+ * Loads a config object from the config cache based on its filename, falling back to the disk if the file is not yet
+ * cached.
+ * @param {string} filePath the path to the config file
+ * @param {Config} configContext Context for the config instance
+ * @param {string} [relativeTo] The path to resolve relative to.
+ * @returns {Object} the parsed config object (empty object if there was a parse error)
+ * @private
+ */
+function load(filePath, configContext, relativeTo) {
+    const resolvedPath = resolve(filePath, relativeTo);
+
+    const cachedConfig = configContext.configCache.getConfig(resolvedPath.configFullName);
+
+    if (cachedConfig) {
+        return cachedConfig;
+    }
+
+    const config = loadFromDisk(resolvedPath, configContext);
+
+    if (config) {
+        config.filePath = resolvedPath.filePath;
+        config.baseDirectory = path.dirname(resolvedPath.filePath);
+        configContext.configCache.setConfig(resolvedPath.configFullName, config);
+    }
+
+    return config;
+}
+
+/**
+ * Checks whether the given filename points to a file
+ * @param {string} filename A path to a file
+ * @returns {boolean} `true` if a file exists at the given location
+ */
+function isExistingFile(filename) {
+    try {
+        return fs.statSync(filename).isFile();
+    } catch (err) {
+        if (err.code === "ENOENT") {
+            return false;
+        }
+        throw err;
+    }
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+
+    getBaseDir,
+    getLookupPath,
+    load,
+    loadObject,
+    resolve,
+    write,
+    applyExtends,
+    CONFIG_FILES,
+
+    /**
+     * Retrieves the configuration filename for a given directory. It loops over all
+     * of the valid configuration filenames in order to find the first one that exists.
+     * @param {string} directory The directory to check for a config file.
+     * @returns {?string} The filename of the configuration file for the directory
+     *      or null if there is no configuration file in the directory.
+     */
+    getFilenameForDirectory(directory) {
+        return CONFIG_FILES.map(filename => path.join(directory, filename)).find(isExistingFile) || null;
+    }
+};

node_modules/eslint/lib/config/config-initializer.js

@@ -0,0 +1,647 @@
+/**
+ * @fileoverview Config initialization wizard.
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const util = require("util"),
+    inquirer = require("inquirer"),
+    ProgressBar = require("progress"),
+    semver = require("semver"),
+    autoconfig = require("./autoconfig.js"),
+    ConfigFile = require("./config-file"),
+    ConfigOps = require("./config-ops"),
+    getSourceCodeOfFiles = require("../util/source-code-utils").getSourceCodeOfFiles,
+    ModuleResolver = require("../util/module-resolver"),
+    npmUtils = require("../util/npm-utils"),
+    recConfig = require("../../conf/eslint-recommended"),
+    log = require("../util/logging");
+
+const debug = require("debug")("eslint:config-initializer");
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+
+/* istanbul ignore next: hard to test fs function */
+/**
+ * Create .eslintrc file in the current working directory
+ * @param {Object} config object that contains user's answers
+ * @param {string} format The file format to write to.
+ * @returns {void}
+ */
+function writeFile(config, format) {
+
+    // default is .js
+    let extname = ".js";
+
+    if (format === "YAML") {
+        extname = ".yml";
+    } else if (format === "JSON") {
+        extname = ".json";
+    }
+
+    const installedESLint = config.installedESLint;
+
+    delete config.installedESLint;
+
+    ConfigFile.write(config, `./.eslintrc${extname}`);
+    log.info(`Successfully created .eslintrc${extname} file in ${process.cwd()}`);
+
+    if (installedESLint) {
+        log.info("ESLint was installed locally. We recommend using this local copy instead of your globally-installed copy.");
+    }
+}
+
+/**
+ * Get the peer dependencies of the given module.
+ * This adds the gotten value to cache at the first time, then reuses it.
+ * In a process, this function is called twice, but `npmUtils.fetchPeerDependencies` needs to access network which is relatively slow.
+ * @param {string} moduleName The module name to get.
+ * @returns {Object} The peer dependencies of the given module.
+ * This object is the object of `peerDependencies` field of `package.json`.
+ * Returns null if npm was not found.
+ */
+function getPeerDependencies(moduleName) {
+    let result = getPeerDependencies.cache.get(moduleName);
+
+    if (!result) {
+        log.info(`Checking peerDependencies of ${moduleName}`);
+
+        result = npmUtils.fetchPeerDependencies(moduleName);
+        getPeerDependencies.cache.set(moduleName, result);
+    }
+
+    return result;
+}
+getPeerDependencies.cache = new Map();
+
+/**
+ * Return necessary plugins, configs, parsers, etc. based on the config
+ * @param   {Object} config  config object
+ * @param   {boolean} [installESLint=true]  If `false` is given, it does not install eslint.
+ * @returns {string[]} An array of modules to be installed.
+ */
+function getModulesList(config, installESLint) {
+    const modules = {};
+
+    // Create a list of modules which should be installed based on config
+    if (config.plugins) {
+        for (const plugin of config.plugins) {
+            modules[`eslint-plugin-${plugin}`] = "latest";
+        }
+    }
+    if (config.extends && config.extends.indexOf("eslint:") === -1) {
+        const moduleName = `eslint-config-${config.extends}`;
+
+        modules[moduleName] = "latest";
+        Object.assign(
+            modules,
+            getPeerDependencies(`${moduleName}@latest`)
+        );
+    }
+
+    if (installESLint === false) {
+        delete modules.eslint;
+    } else {
+        const installStatus = npmUtils.checkDevDeps(["eslint"]);
+
+        // Mark to show messages if it's new installation of eslint.
+        if (installStatus.eslint === false) {
+            log.info("Local ESLint installation not found.");
+            modules.eslint = modules.eslint || "latest";
+            config.installedESLint = true;
+        }
+    }
+
+    return Object.keys(modules).map(name => `${name}@${modules[name]}`);
+}
+
+/**
+ * Set the `rules` of a config by examining a user's source code
+ *
+ * Note: This clones the config object and returns a new config to avoid mutating
+ * the original config parameter.
+ *
+ * @param   {Object} answers  answers received from inquirer
+ * @param   {Object} config   config object
+ * @returns {Object}          config object with configured rules
+ */
+function configureRules(answers, config) {
+    const BAR_TOTAL = 20,
+        BAR_SOURCE_CODE_TOTAL = 4,
+        newConfig = Object.assign({}, config),
+        disabledConfigs = {};
+    let sourceCodes,
+        registry;
+
+    // Set up a progress bar, as this process can take a long time
+    const bar = new ProgressBar("Determining Config: :percent [:bar] :elapseds elapsed, eta :etas ", {
+        width: 30,
+        total: BAR_TOTAL
+    });
+
+    bar.tick(0); // Shows the progress bar
+
+    // Get the SourceCode of all chosen files
+    const patterns = answers.patterns.split(/[\s]+/);
+
+    try {
+        sourceCodes = getSourceCodeOfFiles(patterns, { baseConfig: newConfig, useEslintrc: false }, total => {
+            bar.tick((BAR_SOURCE_CODE_TOTAL / total));
+        });
+    } catch (e) {
+        log.info("\n");
+        throw e;
+    }
+    const fileQty = Object.keys(sourceCodes).length;
+
+    if (fileQty === 0) {
+        log.info("\n");
+        throw new Error("Automatic Configuration failed.  No files were able to be parsed.");
+    }
+
+    // Create a registry of rule configs
+    registry = new autoconfig.Registry();
+    registry.populateFromCoreRules();
+
+    // Lint all files with each rule config in the registry
+    registry = registry.lintSourceCode(sourceCodes, newConfig, total => {
+        bar.tick((BAR_TOTAL - BAR_SOURCE_CODE_TOTAL) / total); // Subtract out ticks used at beginning
+    });
+    debug(`\nRegistry: ${util.inspect(registry.rules, { depth: null })}`);
+
+    // Create a list of recommended rules, because we don't want to disable them
+    const recRules = Object.keys(recConfig.rules).filter(ruleId => ConfigOps.isErrorSeverity(recConfig.rules[ruleId]));
+
+    // Find and disable rules which had no error-free configuration
+    const failingRegistry = registry.getFailingRulesRegistry();
+
+    Object.keys(failingRegistry.rules).forEach(ruleId => {
+
+        // If the rule is recommended, set it to error, otherwise disable it
+        disabledConfigs[ruleId] = (recRules.indexOf(ruleId) !== -1) ? 2 : 0;
+    });
+
+    // Now that we know which rules to disable, strip out configs with errors
+    registry = registry.stripFailingConfigs();
+
+    /*
+     * If there is only one config that results in no errors for a rule, we should use it.
+     * createConfig will only add rules that have one configuration in the registry.
+     */
+    const singleConfigs = registry.createConfig().rules;
+
+    /*
+     * The "sweet spot" for number of options in a config seems to be two (severity plus one option).
+     * Very often, a third option (usually an object) is available to address
+     * edge cases, exceptions, or unique situations. We will prefer to use a config with
+     * specificity of two.
+     */
+    const specTwoConfigs = registry.filterBySpecificity(2).createConfig().rules;
+
+    // Maybe a specific combination using all three options works
+    const specThreeConfigs = registry.filterBySpecificity(3).createConfig().rules;
+
+    // If all else fails, try to use the default (severity only)
+    const defaultConfigs = registry.filterBySpecificity(1).createConfig().rules;
+
+    // Combine configs in reverse priority order (later take precedence)
+    newConfig.rules = Object.assign({}, disabledConfigs, defaultConfigs, specThreeConfigs, specTwoConfigs, singleConfigs);
+
+    // Make sure progress bar has finished (floating point rounding)
+    bar.update(BAR_TOTAL);
+
+    // Log out some stats to let the user know what happened
+    const finalRuleIds = Object.keys(newConfig.rules);
+    const totalRules = finalRuleIds.length;
+    const enabledRules = finalRuleIds.filter(ruleId => (newConfig.rules[ruleId] !== 0)).length;
+    const resultMessage = [
+        `\nEnabled ${enabledRules} out of ${totalRules}`,
+        `rules based on ${fileQty}`,
+        `file${(fileQty === 1) ? "." : "s."}`
+    ].join(" ");
+
+    log.info(resultMessage);
+
+    ConfigOps.normalizeToStrings(newConfig);
+    return newConfig;
+}
+
+/**
+ * process user's answers and create config object
+ * @param {Object} answers answers received from inquirer
+ * @returns {Object} config object
+ */
+function processAnswers(answers) {
+    let config = { rules: {}, env: {}, parserOptions: {} };
+
+    config.parserOptions.ecmaVersion = answers.ecmaVersion;
+    if (answers.ecmaVersion >= 2015) {
+        if (answers.modules) {
+            config.parserOptions.sourceType = "module";
+        }
+        config.env.es6 = true;
+    }
+
+    if (answers.commonjs) {
+        config.env.commonjs = true;
+    }
+    answers.env.forEach(env => {
+        config.env[env] = true;
+    });
+    if (answers.jsx) {
+        config.parserOptions = config.parserOptions || {};
+        config.parserOptions.ecmaFeatures = config.parserOptions.ecmaFeatures || {};
+        config.parserOptions.ecmaFeatures.jsx = true;
+        if (answers.react) {
+            config.plugins = ["react"];
+            config.parserOptions.ecmaVersion = 2018;
+        }
+    }
+
+    if (answers.source === "prompt") {
+        config.extends = "eslint:recommended";
+        config.rules.indent = ["error", answers.indent];
+        config.rules.quotes = ["error", answers.quotes];
+        config.rules["linebreak-style"] = ["error", answers.linebreak];
+        config.rules.semi = ["error", answers.semi ? "always" : "never"];
+    }
+
+    if (answers.source === "auto") {
+        config = configureRules(answers, config);
+        config = autoconfig.extendFromRecommended(config);
+    }
+
+    ConfigOps.normalizeToStrings(config);
+    return config;
+}
+
+/**
+ * process user's style guide of choice and return an appropriate config object.
+ * @param {string} guide name of the chosen style guide
+ * @returns {Object} config object
+ */
+function getConfigForStyleGuide(guide) {
+    const guides = {
+        google: { extends: "google" },
+        airbnb: { extends: "airbnb" },
+        "airbnb-base": { extends: "airbnb-base" },
+        standard: { extends: "standard" }
+    };
+
+    if (!guides[guide]) {
+        throw new Error("You referenced an unsupported guide.");
+    }
+
+    return guides[guide];
+}
+
+/**
+ * Get the version of the local ESLint.
+ * @returns {string|null} The version. If the local ESLint was not found, returns null.
+ */
+function getLocalESLintVersion() {
+    try {
+        const resolver = new ModuleResolver();
+        const eslintPath = resolver.resolve("eslint", process.cwd());
+        const eslint = require(eslintPath);
+
+        return eslint.linter.version || null;
+    } catch (_err) {
+        return null;
+    }
+}
+
+/**
+ * Get the shareable config name of the chosen style guide.
+ * @param {Object} answers The answers object.
+ * @returns {string} The shareable config name.
+ */
+function getStyleGuideName(answers) {
+    if (answers.styleguide === "airbnb" && !answers.airbnbReact) {
+        return "airbnb-base";
+    }
+    return answers.styleguide;
+}
+
+/**
+ * Check whether the local ESLint version conflicts with the required version of the chosen shareable config.
+ * @param {Object} answers The answers object.
+ * @returns {boolean} `true` if the local ESLint is found then it conflicts with the required version of the chosen shareable config.
+ */
+function hasESLintVersionConflict(answers) {
+
+    // Get the local ESLint version.
+    const localESLintVersion = getLocalESLintVersion();
+
+    if (!localESLintVersion) {
+        return false;
+    }
+
+    // Get the required range of ESLint version.
+    const configName = getStyleGuideName(answers);
+    const moduleName = `eslint-config-${configName}@latest`;
+    const peerDependencies = getPeerDependencies(moduleName) || {};
+    const requiredESLintVersionRange = peerDependencies.eslint;
+
+    if (!requiredESLintVersionRange) {
+        return false;
+    }
+
+    answers.localESLintVersion = localESLintVersion;
+    answers.requiredESLintVersionRange = requiredESLintVersionRange;
+
+    // Check the version.
+    if (semver.satisfies(localESLintVersion, requiredESLintVersionRange)) {
+        answers.installESLint = false;
+        return false;
+    }
+
+    return true;
+}
+
+/**
+ * Install modules.
+ * @param   {string[]} modules Modules to be installed.
+ * @returns {void}
+ */
+function installModules(modules) {
+    log.info(`Installing ${modules.join(", ")}`);
+    npmUtils.installSyncSaveDev(modules);
+}
+
+/* istanbul ignore next: no need to test inquirer */
+/**
+ * Ask user to install modules.
+ * @param   {string[]} modules Array of modules to be installed.
+ * @param   {boolean} packageJsonExists Indicates if package.json is existed.
+ * @returns {Promise} Answer that indicates if user wants to install.
+ */
+function askInstallModules(modules, packageJsonExists) {
+
+    // If no modules, do nothing.
+    if (modules.length === 0) {
+        return Promise.resolve();
+    }
+
+    log.info("The config that you've selected requires the following dependencies:\n");
+    log.info(modules.join(" "));
+    return inquirer.prompt([
+        {
+            type: "confirm",
+            name: "executeInstallation",
+            message: "Would you like to install them now with npm?",
+            default: true,
+            when() {
+                return modules.length && packageJsonExists;
+            }
+        }
+    ]).then(({ executeInstallation }) => {
+        if (executeInstallation) {
+            installModules(modules);
+        }
+    });
+}
+
+/* istanbul ignore next: no need to test inquirer */
+/**
+ * Ask use a few questions on command prompt
+ * @returns {Promise} The promise with the result of the prompt
+ */
+function promptUser() {
+
+    return inquirer.prompt([
+        {
+            type: "list",
+            name: "source",
+            message: "How would you like to configure ESLint?",
+            default: "prompt",
+            choices: [
+                { name: "Use a popular style guide", value: "guide" },
+                { name: "Answer questions about your style", value: "prompt" },
+                { name: "Inspect your JavaScript file(s)", value: "auto" }
+            ]
+        },
+        {
+            type: "list",
+            name: "styleguide",
+            message: "Which style guide do you want to follow?",
+            choices: [
+                { name: "Airbnb (https://github.com/airbnb/javascript)", value: "airbnb" },
+                { name: "Standard (https://github.com/standard/standard)", value: "standard" },
+                { name: "Google (https://github.com/google/eslint-config-google)", value: "google" }
+            ],
+            when(answers) {
+                answers.packageJsonExists = npmUtils.checkPackageJson();
+                return answers.source === "guide" && answers.packageJsonExists;
+            }
+        },
+        {
+            type: "confirm",
+            name: "airbnbReact",
+            message: "Do you use React?",
+            default: false,
+            when(answers) {
+                return answers.styleguide === "airbnb";
+            }
+        },
+        {
+            type: "input",
+            name: "patterns",
+            message: "Which file(s), path(s), or glob(s) should be examined?",
+            when(answers) {
+                return (answers.source === "auto");
+            },
+            validate(input) {
+                if (input.trim().length === 0 && input.trim() !== ",") {
+                    return "You must tell us what code to examine. Try again.";
+                }
+                return true;
+            }
+        },
+        {
+            type: "list",
+            name: "format",
+            message: "What format do you want your config file to be in?",
+            default: "JavaScript",
+            choices: ["JavaScript", "YAML", "JSON"],
+            when(answers) {
+                return ((answers.source === "guide" && answers.packageJsonExists) || answers.source === "auto");
+            }
+        },
+        {
+            type: "confirm",
+            name: "installESLint",
+            message(answers) {
+                const verb = semver.ltr(answers.localESLintVersion, answers.requiredESLintVersionRange)
+                    ? "upgrade"
+                    : "downgrade";
+
+                return `The style guide "${answers.styleguide}" requires eslint@${answers.requiredESLintVersionRange}. You are currently using eslint@${answers.localESLintVersion}.\n  Do you want to ${verb}?`;
+            },
+            default: true,
+            when(answers) {
+                return answers.source === "guide" && answers.packageJsonExists && hasESLintVersionConflict(answers);
+            }
+        }
+    ]).then(earlyAnswers => {
+
+        // early exit if you are using a style guide
+        if (earlyAnswers.source === "guide") {
+            if (!earlyAnswers.packageJsonExists) {
+                log.info("A package.json is necessary to install plugins such as style guides. Run `npm init` to create a package.json file and try again.");
+                return void 0;
+            }
+            if (earlyAnswers.installESLint === false && !semver.satisfies(earlyAnswers.localESLintVersion, earlyAnswers.requiredESLintVersionRange)) {
+                log.info(`Note: it might not work since ESLint's version is mismatched with the ${earlyAnswers.styleguide} config.`);
+            }
+            if (earlyAnswers.styleguide === "airbnb" && !earlyAnswers.airbnbReact) {
+                earlyAnswers.styleguide = "airbnb-base";
+            }
+
+            const config = getConfigForStyleGuide(earlyAnswers.styleguide);
+            const modules = getModulesList(config);
+
+            return askInstallModules(modules, earlyAnswers.packageJsonExists)
+                .then(() => writeFile(config, earlyAnswers.format));
+        }
+
+        // continue with the questions otherwise...
+        return inquirer.prompt([
+            {
+                type: "list",
+                name: "ecmaVersion",
+                message: "Which version of ECMAScript do you use?",
+                choices: [
+                    { name: "ES3", value: 3 },
+                    { name: "ES5", value: 5 },
+                    { name: "ES2015", value: 2015 },
+                    { name: "ES2016", value: 2016 },
+                    { name: "ES2017", value: 2017 },
+                    { name: "ES2018", value: 2018 }
+                ],
+                default: 1 // This is the index in the choices list
+            },
+            {
+                type: "confirm",
+                name: "modules",
+                message: "Are you using ES6 modules?",
+                default: false,
+                when(answers) {
+                    return answers.ecmaVersion >= 2015;
+                }
+            },
+            {
+                type: "checkbox",
+                name: "env",
+                message: "Where will your code run?",
+                default: ["browser"],
+                choices: [{ name: "Browser", value: "browser" }, { name: "Node", value: "node" }]
+            },
+            {
+                type: "confirm",
+                name: "commonjs",
+                message: "Do you use CommonJS?",
+                default: false,
+                when(answers) {
+                    return answers.env.some(env => env === "browser");
+                }
+            },
+            {
+                type: "confirm",
+                name: "jsx",
+                message: "Do you use JSX?",
+                default: false
+            },
+            {
+                type: "confirm",
+                name: "react",
+                message: "Do you use React?",
+                default: false,
+                when(answers) {
+                    return answers.jsx;
+                }
+            }
+        ]).then(secondAnswers => {
+
+            // early exit if you are using automatic style generation
+            if (earlyAnswers.source === "auto") {
+                const combinedAnswers = Object.assign({}, earlyAnswers, secondAnswers);
+
+                const config = processAnswers(combinedAnswers);
+
+                const modules = getModulesList(config);
+
+                return askInstallModules(modules).then(() => writeFile(config, earlyAnswers.format));
+            }
+
+            // continue with the style questions otherwise...
+            return inquirer.prompt([
+                {
+                    type: "list",
+                    name: "indent",
+                    message: "What style of indentation do you use?",
+                    default: "tab",
+                    choices: [{ name: "Tabs", value: "tab" }, { name: "Spaces", value: 4 }]
+                },
+                {
+                    type: "list",
+                    name: "quotes",
+                    message: "What quotes do you use for strings?",
+                    default: "double",
+                    choices: [{ name: "Double", value: "double" }, { name: "Single", value: "single" }]
+                },
+                {
+                    type: "list",
+                    name: "linebreak",
+                    message: "What line endings do you use?",
+                    default: "unix",
+                    choices: [{ name: "Unix", value: "unix" }, { name: "Windows", value: "windows" }]
+                },
+                {
+                    type: "confirm",
+                    name: "semi",
+                    message: "Do you require semicolons?",
+                    default: true
+                },
+                {
+                    type: "list",
+                    name: "format",
+                    message: "What format do you want your config file to be in?",
+                    default: "JavaScript",
+                    choices: ["JavaScript", "YAML", "JSON"]
+                }
+            ]).then(answers => {
+                const totalAnswers = Object.assign({}, earlyAnswers, secondAnswers, answers);
+
+                const config = processAnswers(totalAnswers);
+                const modules = getModulesList(config);
+
+                return askInstallModules(modules).then(() => writeFile(config, answers.format));
+            });
+        });
+    });
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+const init = {
+    getConfigForStyleGuide,
+    getModulesList,
+    hasESLintVersionConflict,
+    installModules,
+    processAnswers,
+    /* istanbul ignore next */initializeConfig() {
+        return promptUser();
+    }
+};
+
+module.exports = init;

node_modules/eslint/lib/config/config-ops.js

@@ -0,0 +1,374 @@
+/**
+ * @fileoverview Config file operations. This file must be usable in the browser,
+ * so no Node-specific code can be here.
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const minimatch = require("minimatch"),
+    path = require("path");
+
+const debug = require("debug")("eslint:config-ops");
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+
+const RULE_SEVERITY_STRINGS = ["off", "warn", "error"],
+    RULE_SEVERITY = RULE_SEVERITY_STRINGS.reduce((map, value, index) => {
+        map[value] = index;
+        return map;
+    }, {}),
+    VALID_SEVERITIES = [0, 1, 2, "off", "warn", "error"];
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+
+    /**
+     * Creates an empty configuration object suitable for merging as a base.
+     * @returns {Object} A configuration object.
+     */
+    createEmptyConfig() {
+        return {
+            globals: {},
+            env: {},
+            rules: {},
+            parserOptions: {}
+        };
+    },
+
+    /**
+     * Creates an environment config based on the specified environments.
+     * @param {Object<string,boolean>} env The environment settings.
+     * @param {Environments} envContext The environment context.
+     * @returns {Object} A configuration object with the appropriate rules and globals
+     *      set.
+     */
+    createEnvironmentConfig(env, envContext) {
+
+        const envConfig = this.createEmptyConfig();
+
+        if (env) {
+
+            envConfig.env = env;
+
+            Object.keys(env).filter(name => env[name]).forEach(name => {
+                const environment = envContext.get(name);
+
+                if (environment) {
+                    debug(`Creating config for environment ${name}`);
+                    if (environment.globals) {
+                        Object.assign(envConfig.globals, environment.globals);
+                    }
+
+                    if (environment.parserOptions) {
+                        Object.assign(envConfig.parserOptions, environment.parserOptions);
+                    }
+                }
+            });
+        }
+
+        return envConfig;
+    },
+
+    /**
+     * Given a config with environment settings, applies the globals and
+     * ecmaFeatures to the configuration and returns the result.
+     * @param {Object} config The configuration information.
+     * @param {Environments} envContent env context.
+     * @returns {Object} The updated configuration information.
+     */
+    applyEnvironments(config, envContent) {
+        if (config.env && typeof config.env === "object") {
+            debug("Apply environment settings to config");
+            return this.merge(this.createEnvironmentConfig(config.env, envContent), config);
+        }
+
+        return config;
+    },
+
+    /**
+     * Merges two config objects. This will not only add missing keys, but will also modify values to match.
+     * @param {Object} target config object
+     * @param {Object} src config object. Overrides in this config object will take priority over base.
+     * @param {boolean} [combine] Whether to combine arrays or not
+     * @param {boolean} [isRule] Whether its a rule
+     * @returns {Object} merged config object.
+     */
+    merge: function deepmerge(target, src, combine, isRule) {
+
+        /*
+         * The MIT License (MIT)
+         *
+         * Copyright (c) 2012 Nicholas Fisher
+         *
+         * Permission is hereby granted, free of charge, to any person obtaining a copy
+         * of this software and associated documentation files (the "Software"), to deal
+         * in the Software without restriction, including without limitation the rights
+         * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+         * copies of the Software, and to permit persons to whom the Software is
+         * furnished to do so, subject to the following conditions:
+         *
+         * The above copyright notice and this permission notice shall be included in
+         * all copies or substantial portions of the Software.
+         *
+         * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+         * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+         * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+         * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+         * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+         * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+         * THE SOFTWARE.
+         */
+
+        /*
+         * This code is taken from deepmerge repo
+         * (https://github.com/KyleAMathews/deepmerge)
+         * and modified to meet our needs.
+         */
+        const array = Array.isArray(src) || Array.isArray(target);
+        let dst = array && [] || {};
+
+        if (array) {
+            const resolvedTarget = target || [];
+
+            // src could be a string, so check for array
+            if (isRule && Array.isArray(src) && src.length > 1) {
+                dst = dst.concat(src);
+            } else {
+                dst = dst.concat(resolvedTarget);
+            }
+            const resolvedSrc = typeof src === "object" ? src : [src];
+
+            Object.keys(resolvedSrc).forEach((_, i) => {
+                const e = resolvedSrc[i];
+
+                if (typeof dst[i] === "undefined") {
+                    dst[i] = e;
+                } else if (typeof e === "object") {
+                    if (isRule) {
+                        dst[i] = e;
+                    } else {
+                        dst[i] = deepmerge(resolvedTarget[i], e, combine, isRule);
+                    }
+                } else {
+                    if (!combine) {
+                        dst[i] = e;
+                    } else {
+                        if (dst.indexOf(e) === -1) {
+                            dst.push(e);
+                        }
+                    }
+                }
+            });
+        } else {
+            if (target && typeof target === "object") {
+                Object.keys(target).forEach(key => {
+                    dst[key] = target[key];
+                });
+            }
+            Object.keys(src).forEach(key => {
+                if (key === "overrides") {
+                    dst[key] = (target[key] || []).concat(src[key] || []);
+                } else if (Array.isArray(src[key]) || Array.isArray(target[key])) {
+                    dst[key] = deepmerge(target[key], src[key], key === "plugins" || key === "extends", isRule);
+                } else if (typeof src[key] !== "object" || !src[key] || key === "exported" || key === "astGlobals") {
+                    dst[key] = src[key];
+                } else {
+                    dst[key] = deepmerge(target[key] || {}, src[key], combine, key === "rules");
+                }
+            });
+        }
+
+        return dst;
+    },
+
+    /**
+     * Normalizes the severity value of a rule's configuration to a number
+     * @param {(number|string|[number, ...*]|[string, ...*])} ruleConfig A rule's configuration value, generally
+     * received from the user. A valid config value is either 0, 1, 2, the string "off" (treated the same as 0),
+     * the string "warn" (treated the same as 1), the string "error" (treated the same as 2), or an array
+     * whose first element is one of the above values. Strings are matched case-insensitively.
+     * @returns {(0|1|2)} The numeric severity value if the config value was valid, otherwise 0.
+     */
+    getRuleSeverity(ruleConfig) {
+        const severityValue = Array.isArray(ruleConfig) ? ruleConfig[0] : ruleConfig;
+
+        if (severityValue === 0 || severityValue === 1 || severityValue === 2) {
+            return severityValue;
+        }
+
+        if (typeof severityValue === "string") {
+            return RULE_SEVERITY[severityValue.toLowerCase()] || 0;
+        }
+
+        return 0;
+    },
+
+    /**
+     * Converts old-style severity settings (0, 1, 2) into new-style
+     * severity settings (off, warn, error) for all rules. Assumption is that severity
+     * values have already been validated as correct.
+     * @param {Object} config The config object to normalize.
+     * @returns {void}
+     */
+    normalizeToStrings(config) {
+
+        if (config.rules) {
+            Object.keys(config.rules).forEach(ruleId => {
+                const ruleConfig = config.rules[ruleId];
+
+                if (typeof ruleConfig === "number") {
+                    config.rules[ruleId] = RULE_SEVERITY_STRINGS[ruleConfig] || RULE_SEVERITY_STRINGS[0];
+                } else if (Array.isArray(ruleConfig) && typeof ruleConfig[0] === "number") {
+                    ruleConfig[0] = RULE_SEVERITY_STRINGS[ruleConfig[0]] || RULE_SEVERITY_STRINGS[0];
+                }
+            });
+        }
+    },
+
+    /**
+     * Determines if the severity for the given rule configuration represents an error.
+     * @param {int|string|Array} ruleConfig The configuration for an individual rule.
+     * @returns {boolean} True if the rule represents an error, false if not.
+     */
+    isErrorSeverity(ruleConfig) {
+        return module.exports.getRuleSeverity(ruleConfig) === 2;
+    },
+
+    /**
+     * Checks whether a given config has valid severity or not.
+     * @param {number|string|Array} ruleConfig - The configuration for an individual rule.
+     * @returns {boolean} `true` if the configuration has valid severity.
+     */
+    isValidSeverity(ruleConfig) {
+        let severity = Array.isArray(ruleConfig) ? ruleConfig[0] : ruleConfig;
+
+        if (typeof severity === "string") {
+            severity = severity.toLowerCase();
+        }
+        return VALID_SEVERITIES.indexOf(severity) !== -1;
+    },
+
+    /**
+     * Checks whether every rule of a given config has valid severity or not.
+     * @param {Object} config - The configuration for rules.
+     * @returns {boolean} `true` if the configuration has valid severity.
+     */
+    isEverySeverityValid(config) {
+        return Object.keys(config).every(ruleId => this.isValidSeverity(config[ruleId]));
+    },
+
+    /**
+     * Merges all configurations in a given config vector. A vector is an array of objects, each containing a config
+     * file path and a list of subconfig indices that match the current file path. All config data is assumed to be
+     * cached.
+     * @param {Array<Object>} vector list of config files and their subconfig indices that match the current file path
+     * @param {Object} configCache the config cache
+     * @returns {Object} config object
+     */
+    getConfigFromVector(vector, configCache) {
+
+        const cachedConfig = configCache.getMergedVectorConfig(vector);
+
+        if (cachedConfig) {
+            return cachedConfig;
+        }
+
+        debug("Using config from partial cache");
+
+        const subvector = Array.from(vector);
+        let nearestCacheIndex = subvector.length - 1,
+            partialCachedConfig;
+
+        while (nearestCacheIndex >= 0) {
+            partialCachedConfig = configCache.getMergedVectorConfig(subvector);
+            if (partialCachedConfig) {
+                break;
+            }
+            subvector.pop();
+            nearestCacheIndex--;
+        }
+
+        if (!partialCachedConfig) {
+            partialCachedConfig = {};
+        }
+
+        let finalConfig = partialCachedConfig;
+
+        // Start from entry immediately following nearest cached config (first uncached entry)
+        for (let i = nearestCacheIndex + 1; i < vector.length; i++) {
+            finalConfig = this.mergeVectorEntry(finalConfig, vector[i], configCache);
+            configCache.setMergedVectorConfig(vector.slice(0, i + 1), finalConfig);
+        }
+
+        return finalConfig;
+    },
+
+    /**
+     * Merges the config options from a single vector entry into the supplied config.
+     * @param {Object} config the base config to merge the vector entry's options into
+     * @param {Object} vectorEntry a single entry from a vector, consisting of a config file path and an array of
+     * matching override indices
+     * @param {Object} configCache the config cache
+     * @returns {Object} merged config object
+     */
+    mergeVectorEntry(config, vectorEntry, configCache) {
+        const vectorEntryConfig = Object.assign({}, configCache.getConfig(vectorEntry.filePath));
+        let mergedConfig = Object.assign({}, config),
+            overrides;
+
+        if (vectorEntryConfig.overrides) {
+            overrides = vectorEntryConfig.overrides.filter(
+                (override, overrideIndex) => vectorEntry.matchingOverrides.indexOf(overrideIndex) !== -1
+            );
+        } else {
+            overrides = [];
+        }
+
+        mergedConfig = this.merge(mergedConfig, vectorEntryConfig);
+
+        delete mergedConfig.overrides;
+
+        mergedConfig = overrides.reduce((lastConfig, override) => this.merge(lastConfig, override), mergedConfig);
+
+        if (mergedConfig.filePath) {
+            delete mergedConfig.filePath;
+            delete mergedConfig.baseDirectory;
+        } else if (mergedConfig.files) {
+            delete mergedConfig.files;
+        }
+
+        return mergedConfig;
+    },
+
+    /**
+     * Checks that the specified file path matches all of the supplied glob patterns.
+     * @param {string} filePath The file path to test patterns against
+     * @param {string|string[]} patterns One or more glob patterns, of which at least one should match the file path
+     * @param {string|string[]} [excludedPatterns] One or more glob patterns, of which none should match the file path
+     * @returns {boolean} True if all the supplied patterns match the file path, false otherwise
+     */
+    pathMatchesGlobs(filePath, patterns, excludedPatterns) {
+        const patternList = [].concat(patterns);
+        const excludedPatternList = [].concat(excludedPatterns || []);
+
+        patternList.concat(excludedPatternList).forEach(pattern => {
+            if (path.isAbsolute(pattern) || pattern.includes("..")) {
+                throw new Error(`Invalid override pattern (expected relative path not containing '..'): ${pattern}`);
+            }
+        });
+
+        const opts = { matchBase: true };
+
+        return patternList.some(pattern => minimatch(filePath, pattern, opts)) &&
+            !excludedPatternList.some(excludedPattern => minimatch(filePath, excludedPattern, opts));
+    }
+};

node_modules/eslint/lib/config/config-rule.js

@@ -0,0 +1,321 @@
+/**
+ * @fileoverview Create configurations for a rule
+ * @author Ian VanSchooten
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Rules = require("../rules"),
+    loadRules = require("../load-rules");
+
+const rules = new Rules();
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Wrap all of the elements of an array into arrays.
+ * @param   {*[]}     xs Any array.
+ * @returns {Array[]}    An array of arrays.
+ */
+function explodeArray(xs) {
+    return xs.reduce((accumulator, x) => {
+        accumulator.push([x]);
+        return accumulator;
+    }, []);
+}
+
+/**
+ * Mix two arrays such that each element of the second array is concatenated
+ * onto each element of the first array.
+ *
+ * For example:
+ * combineArrays([a, [b, c]], [x, y]); // -> [[a, x], [a, y], [b, c, x], [b, c, y]]
+ *
+ * @param   {array} arr1 The first array to combine.
+ * @param   {array} arr2 The second array to combine.
+ * @returns {array}      A mixture of the elements of the first and second arrays.
+ */
+function combineArrays(arr1, arr2) {
+    const res = [];
+
+    if (arr1.length === 0) {
+        return explodeArray(arr2);
+    }
+    if (arr2.length === 0) {
+        return explodeArray(arr1);
+    }
+    arr1.forEach(x1 => {
+        arr2.forEach(x2 => {
+            res.push([].concat(x1, x2));
+        });
+    });
+    return res;
+}
+
+/**
+ * Group together valid rule configurations based on object properties
+ *
+ * e.g.:
+ * groupByProperty([
+ *     {before: true},
+ *     {before: false},
+ *     {after: true},
+ *     {after: false}
+ * ]);
+ *
+ * will return:
+ * [
+ *     [{before: true}, {before: false}],
+ *     [{after: true}, {after: false}]
+ * ]
+ *
+ * @param   {Object[]} objects Array of objects, each with one property/value pair
+ * @returns {Array[]}          Array of arrays of objects grouped by property
+ */
+function groupByProperty(objects) {
+    const groupedObj = objects.reduce((accumulator, obj) => {
+        const prop = Object.keys(obj)[0];
+
+        accumulator[prop] = accumulator[prop] ? accumulator[prop].concat(obj) : [obj];
+        return accumulator;
+    }, {});
+
+    return Object.keys(groupedObj).map(prop => groupedObj[prop]);
+}
+
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+
+/**
+ * Configuration settings for a rule.
+ *
+ * A configuration can be a single number (severity), or an array where the first
+ * element in the array is the severity, and is the only required element.
+ * Configs may also have one or more additional elements to specify rule
+ * configuration or options.
+ *
+ * @typedef {array|number} ruleConfig
+ * @param {number}  0  The rule's severity (0, 1, 2).
+ */
+
+/**
+ * Object whose keys are rule names and values are arrays of valid ruleConfig items
+ * which should be linted against the target source code to determine error counts.
+ * (a ruleConfigSet.ruleConfigs).
+ *
+ * e.g. rulesConfig = {
+ *     "comma-dangle": [2, [2, "always"], [2, "always-multiline"], [2, "never"]],
+ *     "no-console": [2]
+ * }
+ * @typedef rulesConfig
+ */
+
+
+/**
+ * Create valid rule configurations by combining two arrays,
+ * with each array containing multiple objects each with a
+ * single property/value pair and matching properties.
+ *
+ * e.g.:
+ * combinePropertyObjects(
+ *     [{before: true}, {before: false}],
+ *     [{after: true}, {after: false}]
+ * );
+ *
+ * will return:
+ * [
+ *     {before: true, after: true},
+ *     {before: true, after: false},
+ *     {before: false, after: true},
+ *     {before: false, after: false}
+ * ]
+ *
+ * @param   {Object[]} objArr1 Single key/value objects, all with the same key
+ * @param   {Object[]} objArr2 Single key/value objects, all with another key
+ * @returns {Object[]}         Combined objects for each combination of input properties and values
+ */
+function combinePropertyObjects(objArr1, objArr2) {
+    const res = [];
+
+    if (objArr1.length === 0) {
+        return objArr2;
+    }
+    if (objArr2.length === 0) {
+        return objArr1;
+    }
+    objArr1.forEach(obj1 => {
+        objArr2.forEach(obj2 => {
+            const combinedObj = {};
+            const obj1Props = Object.keys(obj1);
+            const obj2Props = Object.keys(obj2);
+
+            obj1Props.forEach(prop1 => {
+                combinedObj[prop1] = obj1[prop1];
+            });
+            obj2Props.forEach(prop2 => {
+                combinedObj[prop2] = obj2[prop2];
+            });
+            res.push(combinedObj);
+        });
+    });
+    return res;
+}
+
+/**
+ * Creates a new instance of a rule configuration set
+ *
+ * A rule configuration set is an array of configurations that are valid for a
+ * given rule.  For example, the configuration set for the "semi" rule could be:
+ *
+ * ruleConfigSet.ruleConfigs // -> [[2], [2, "always"], [2, "never"]]
+ *
+ * Rule configuration set class
+ */
+class RuleConfigSet {
+
+    /**
+     * @param {ruleConfig[]} configs Valid rule configurations
+     */
+    constructor(configs) {
+
+        /**
+         * Stored valid rule configurations for this instance
+         * @type {array}
+         */
+        this.ruleConfigs = configs || [];
+    }
+
+    /**
+     * Add a severity level to the front of all configs in the instance.
+     * This should only be called after all configs have been added to the instance.
+     *
+     * @returns {void}
+     */
+    addErrorSeverity() {
+        const severity = 2;
+
+        this.ruleConfigs = this.ruleConfigs.map(config => {
+            config.unshift(severity);
+            return config;
+        });
+
+        // Add a single config at the beginning consisting of only the severity
+        this.ruleConfigs.unshift(severity);
+    }
+
+    /**
+     * Add rule configs from an array of strings (schema enums)
+     * @param  {string[]} enums Array of valid rule options (e.g. ["always", "never"])
+     * @returns {void}
+     */
+    addEnums(enums) {
+        this.ruleConfigs = this.ruleConfigs.concat(combineArrays(this.ruleConfigs, enums));
+    }
+
+    /**
+     * Add rule configurations from a schema object
+     * @param  {Object} obj Schema item with type === "object"
+     * @returns {boolean} true if at least one schema for the object could be generated, false otherwise
+     */
+    addObject(obj) {
+        const objectConfigSet = {
+            objectConfigs: [],
+            add(property, values) {
+                for (let idx = 0; idx < values.length; idx++) {
+                    const optionObj = {};
+
+                    optionObj[property] = values[idx];
+                    this.objectConfigs.push(optionObj);
+                }
+            },
+
+            combine() {
+                this.objectConfigs = groupByProperty(this.objectConfigs).reduce((accumulator, objArr) => combinePropertyObjects(accumulator, objArr), []);
+            }
+        };
+
+        /*
+         * The object schema could have multiple independent properties.
+         * If any contain enums or booleans, they can be added and then combined
+         */
+        Object.keys(obj.properties).forEach(prop => {
+            if (obj.properties[prop].enum) {
+                objectConfigSet.add(prop, obj.properties[prop].enum);
+            }
+            if (obj.properties[prop].type && obj.properties[prop].type === "boolean") {
+                objectConfigSet.add(prop, [true, false]);
+            }
+        });
+        objectConfigSet.combine();
+
+        if (objectConfigSet.objectConfigs.length > 0) {
+            this.ruleConfigs = this.ruleConfigs.concat(combineArrays(this.ruleConfigs, objectConfigSet.objectConfigs));
+            return true;
+        }
+
+        return false;
+    }
+}
+
+/**
+ * Generate valid rule configurations based on a schema object
+ * @param   {Object} schema  A rule's schema object
+ * @returns {array[]}        Valid rule configurations
+ */
+function generateConfigsFromSchema(schema) {
+    const configSet = new RuleConfigSet();
+
+    if (Array.isArray(schema)) {
+        for (const opt of schema) {
+            if (opt.enum) {
+                configSet.addEnums(opt.enum);
+            } else if (opt.type && opt.type === "object") {
+                if (!configSet.addObject(opt)) {
+                    break;
+                }
+
+            // TODO (IanVS): support oneOf
+            } else {
+
+                // If we don't know how to fill in this option, don't fill in any of the following options.
+                break;
+            }
+        }
+    }
+    configSet.addErrorSeverity();
+    return configSet.ruleConfigs;
+}
+
+/**
+ * Generate possible rule configurations for all of the core rules
+ * @returns {rulesConfig} Hash of rule names and arrays of possible configurations
+ */
+function createCoreRuleConfigs() {
+    const ruleList = loadRules();
+
+    return Object.keys(ruleList).reduce((accumulator, id) => {
+        const rule = rules.get(id);
+        const schema = (typeof rule === "function") ? rule.schema : rule.meta.schema;
+
+        accumulator[id] = generateConfigsFromSchema(schema);
+        return accumulator;
+    }, {});
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+    generateConfigsFromSchema,
+    createCoreRuleConfigs
+};

node_modules/eslint/lib/config/config-validator.js

@@ -0,0 +1,279 @@
+/**
+ * @fileoverview Validates configs.
+ * @author Brandon Mills
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const path = require("path"),
+    ajv = require("../util/ajv"),
+    lodash = require("lodash"),
+    configSchema = require("../../conf/config-schema.js"),
+    util = require("util");
+
+const ruleValidators = new WeakMap();
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+let validateSchema;
+
+// Defitions for deprecation warnings.
+const deprecationWarningMessages = {
+    ESLINT_LEGACY_ECMAFEATURES: "The 'ecmaFeatures' config file property is deprecated, and has no effect.",
+    ESLINT_LEGACY_OBJECT_REST_SPREAD: "The 'parserOptions.ecmaFeatures.experimentalObjectRestSpread' option is deprecated. Use 'parserOptions.ecmaVersion' instead."
+};
+const severityMap = {
+    error: 2,
+    warn: 1,
+    off: 0
+};
+
+/**
+ * Gets a complete options schema for a rule.
+ * @param {{create: Function, schema: (Array|null)}} rule A new-style rule object
+ * @returns {Object} JSON Schema for the rule's options.
+ */
+function getRuleOptionsSchema(rule) {
+    const schema = rule.schema || rule.meta && rule.meta.schema;
+
+    // Given a tuple of schemas, insert warning level at the beginning
+    if (Array.isArray(schema)) {
+        if (schema.length) {
+            return {
+                type: "array",
+                items: schema,
+                minItems: 0,
+                maxItems: schema.length
+            };
+        }
+        return {
+            type: "array",
+            minItems: 0,
+            maxItems: 0
+        };
+
+    }
+
+    // Given a full schema, leave it alone
+    return schema || null;
+}
+
+/**
+ * Validates a rule's severity and returns the severity value. Throws an error if the severity is invalid.
+ * @param {options} options The given options for the rule.
+ * @returns {number|string} The rule's severity value
+ */
+function validateRuleSeverity(options) {
+    const severity = Array.isArray(options) ? options[0] : options;
+    const normSeverity = typeof severity === "string" ? severityMap[severity.toLowerCase()] : severity;
+
+    if (normSeverity === 0 || normSeverity === 1 || normSeverity === 2) {
+        return normSeverity;
+    }
+
+    throw new Error(`\tSeverity should be one of the following: 0 = off, 1 = warn, 2 = error (you passed '${util.inspect(severity).replace(/'/g, "\"").replace(/\n/g, "")}').\n`);
+
+}
+
+/**
+ * Validates the non-severity options passed to a rule, based on its schema.
+ * @param {{create: Function}} rule The rule to validate
+ * @param {array} localOptions The options for the rule, excluding severity
+ * @returns {void}
+ */
+function validateRuleSchema(rule, localOptions) {
+    if (!ruleValidators.has(rule)) {
+        const schema = getRuleOptionsSchema(rule);
+
+        if (schema) {
+            ruleValidators.set(rule, ajv.compile(schema));
+        }
+    }
+
+    const validateRule = ruleValidators.get(rule);
+
+    if (validateRule) {
+        validateRule(localOptions);
+        if (validateRule.errors) {
+            throw new Error(validateRule.errors.map(
+                error => `\tValue ${JSON.stringify(error.data)} ${error.message}.\n`
+            ).join(""));
+        }
+    }
+}
+
+/**
+ * Validates a rule's options against its schema.
+ * @param {{create: Function}|null} rule The rule that the config is being validated for
+ * @param {string} ruleId The rule's unique name.
+ * @param {array|number} options The given options for the rule.
+ * @param {string|null} source The name of the configuration source to report in any errors. If null or undefined,
+ * no source is prepended to the message.
+ * @returns {void}
+ */
+function validateRuleOptions(rule, ruleId, options, source) {
+    if (!rule) {
+        return;
+    }
+    try {
+        const severity = validateRuleSeverity(options);
+
+        if (severity !== 0) {
+            validateRuleSchema(rule, Array.isArray(options) ? options.slice(1) : []);
+        }
+    } catch (err) {
+        const enhancedMessage = `Configuration for rule "${ruleId}" is invalid:\n${err.message}`;
+
+        if (typeof source === "string") {
+            throw new Error(`${source}:\n\t${enhancedMessage}`);
+        } else {
+            throw new Error(enhancedMessage);
+        }
+    }
+}
+
+/**
+ * Validates an environment object
+ * @param {Object} environment The environment config object to validate.
+ * @param {string} source The name of the configuration source to report in any errors.
+ * @param {Environments} envContext Env context
+ * @returns {void}
+ */
+function validateEnvironment(environment, source, envContext) {
+
+    // not having an environment is ok
+    if (!environment) {
+        return;
+    }
+
+    Object.keys(environment).forEach(env => {
+        if (!envContext.get(env)) {
+            const message = `${source}:\n\tEnvironment key "${env}" is unknown\n`;
+
+            throw new Error(message);
+        }
+    });
+}
+
+/**
+ * Validates a rules config object
+ * @param {Object} rulesConfig The rules config object to validate.
+ * @param {string} source The name of the configuration source to report in any errors.
+ * @param {function(string): {create: Function}} ruleMapper A mapper function from strings to loaded rules
+ * @returns {void}
+ */
+function validateRules(rulesConfig, source, ruleMapper) {
+    if (!rulesConfig) {
+        return;
+    }
+
+    Object.keys(rulesConfig).forEach(id => {
+        validateRuleOptions(ruleMapper(id), id, rulesConfig[id], source);
+    });
+}
+
+/**
+ * Formats an array of schema validation errors.
+ * @param {Array} errors An array of error messages to format.
+ * @returns {string} Formatted error message
+ */
+function formatErrors(errors) {
+    return errors.map(error => {
+        if (error.keyword === "additionalProperties") {
+            const formattedPropertyPath = error.dataPath.length ? `${error.dataPath.slice(1)}.${error.params.additionalProperty}` : error.params.additionalProperty;
+
+            return `Unexpected top-level property "${formattedPropertyPath}"`;
+        }
+        if (error.keyword === "type") {
+            const formattedField = error.dataPath.slice(1);
+            const formattedExpectedType = Array.isArray(error.schema) ? error.schema.join("/") : error.schema;
+            const formattedValue = JSON.stringify(error.data);
+
+            return `Property "${formattedField}" is the wrong type (expected ${formattedExpectedType} but got \`${formattedValue}\`)`;
+        }
+
+        const field = error.dataPath[0] === "." ? error.dataPath.slice(1) : error.dataPath;
+
+        return `"${field}" ${error.message}. Value: ${JSON.stringify(error.data)}`;
+    }).map(message => `\t- ${message}.\n`).join("");
+}
+
+/**
+ * Emits a deprecation warning containing a given filepath. A new deprecation warning is emitted
+ * for each unique file path, but repeated invocations with the same file path have no effect.
+ * No warnings are emitted if the `--no-deprecation` or `--no-warnings` Node runtime flags are active.
+ * @param {string} source The name of the configuration source to report the warning for.
+ * @param {string} errorCode The warning message to show.
+ * @returns {void}
+ */
+const emitDeprecationWarning = lodash.memoize((source, errorCode) => {
+    const rel = path.relative(process.cwd(), source);
+    const message = deprecationWarningMessages[errorCode];
+
+    process.emitWarning(
+        `${message} (found in "${rel}")`,
+        "DeprecationWarning",
+        errorCode
+    );
+});
+
+/**
+ * Validates the top level properties of the config object.
+ * @param {Object} config The config object to validate.
+ * @param {string} source The name of the configuration source to report in any errors.
+ * @returns {void}
+ */
+function validateConfigSchema(config, source) {
+    validateSchema = validateSchema || ajv.compile(configSchema);
+
+    if (!validateSchema(config)) {
+        throw new Error(`ESLint configuration in ${source} is invalid:\n${formatErrors(validateSchema.errors)}`);
+    }
+
+    if (Object.hasOwnProperty.call(config, "ecmaFeatures")) {
+        emitDeprecationWarning(source, "ESLINT_LEGACY_ECMAFEATURES");
+    }
+
+    if (
+        (config.parser || "espree") === "espree" &&
+        config.parserOptions &&
+        config.parserOptions.ecmaFeatures &&
+        config.parserOptions.ecmaFeatures.experimentalObjectRestSpread
+    ) {
+        emitDeprecationWarning(source, "ESLINT_LEGACY_OBJECT_REST_SPREAD");
+    }
+}
+
+/**
+ * Validates an entire config object.
+ * @param {Object} config The config object to validate.
+ * @param {string} source The name of the configuration source to report in any errors.
+ * @param {function(string): {create: Function}} ruleMapper A mapper function from rule IDs to defined rules
+ * @param {Environments} envContext The env context
+ * @returns {void}
+ */
+function validate(config, source, ruleMapper, envContext) {
+    validateConfigSchema(config, source);
+    validateRules(config.rules, source, ruleMapper);
+    validateEnvironment(config.env, source, envContext);
+
+    for (const override of config.overrides || []) {
+        validateRules(override.rules, source, ruleMapper);
+        validateEnvironment(override.env, source, envContext);
+    }
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+    getRuleOptionsSchema,
+    validate,
+    validateRuleOptions
+};

node_modules/eslint/lib/config/environments.js

@@ -0,0 +1,84 @@
+/**
+ * @fileoverview Environments manager
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const envs = require("../../conf/environments");
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+class Environments {
+
+    /**
+     * create env context
+     */
+    constructor() {
+        this._environments = new Map();
+
+        this.load();
+    }
+
+    /**
+     * Loads the default environments.
+     * @returns {void}
+     * @private
+     */
+    load() {
+        Object.keys(envs).forEach(envName => {
+            this._environments.set(envName, envs[envName]);
+        });
+    }
+
+    /**
+     * Gets the environment with the given name.
+     * @param {string} name The name of the environment to retrieve.
+     * @returns {Object?} The environment object or null if not found.
+     */
+    get(name) {
+        return this._environments.get(name) || null;
+    }
+
+    /**
+     * Gets all the environment present
+     * @returns {Object} The environment object for each env name
+     */
+    getAll() {
+        return Array.from(this._environments).reduce((coll, env) => {
+            coll[env[0]] = env[1];
+            return coll;
+        }, {});
+    }
+
+    /**
+     * Defines an environment.
+     * @param {string} name The name of the environment.
+     * @param {Object} env The environment settings.
+     * @returns {void}
+     */
+    define(name, env) {
+        this._environments.set(name, env);
+    }
+
+    /**
+     * Imports all environments from a plugin.
+     * @param {Object} plugin The plugin object.
+     * @param {string} pluginName The name of the plugin.
+     * @returns {void}
+     */
+    importPlugin(plugin, pluginName) {
+        if (plugin.environments) {
+            Object.keys(plugin.environments).forEach(envName => {
+                this.define(`${pluginName}/${envName}`, plugin.environments[envName]);
+            });
+        }
+    }
+}
+
+module.exports = Environments;

node_modules/eslint/lib/config/plugins.js

@@ -0,0 +1,161 @@
+/**
+ * @fileoverview Plugins manager
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const debug = require("debug")("eslint:plugins");
+const naming = require("../util/naming");
+const path = require("path");
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Plugin class
+ */
+class Plugins {
+
+    /**
+     * Creates the plugins context
+     * @param {Environments} envContext - env context
+     * @param {Rules} rulesContext - rules context
+     */
+    constructor(envContext, rulesContext) {
+        this._plugins = Object.create(null);
+        this._environments = envContext;
+        this._rules = rulesContext;
+    }
+
+    /**
+     * Defines a plugin with a given name rather than loading from disk.
+     * @param {string} pluginName The name of the plugin to load.
+     * @param {Object} plugin The plugin object.
+     * @returns {void}
+     */
+    define(pluginName, plugin) {
+        const longName = naming.normalizePackageName(pluginName, "eslint-plugin");
+        const shortName = naming.getShorthandName(longName, "eslint-plugin");
+
+        // load up environments and rules
+        this._plugins[shortName] = plugin;
+        this._environments.importPlugin(plugin, shortName);
+        this._rules.importPlugin(plugin, shortName);
+    }
+
+    /**
+     * Gets a plugin with the given name.
+     * @param {string} pluginName The name of the plugin to retrieve.
+     * @returns {Object} The plugin or null if not loaded.
+     */
+    get(pluginName) {
+        return this._plugins[pluginName] || null;
+    }
+
+    /**
+     * Returns all plugins that are loaded.
+     * @returns {Object} The plugins cache.
+     */
+    getAll() {
+        return this._plugins;
+    }
+
+    /**
+     * Loads a plugin with the given name.
+     * @param {string} pluginName The name of the plugin to load.
+     * @returns {void}
+     * @throws {Error} If the plugin cannot be loaded.
+     */
+    load(pluginName) {
+        const longName = naming.normalizePackageName(pluginName, "eslint-plugin");
+        const shortName = naming.getShorthandName(longName, "eslint-plugin");
+        let plugin = null;
+
+        if (pluginName.match(/\s+/)) {
+            const whitespaceError = new Error(`Whitespace found in plugin name '${pluginName}'`);
+
+            whitespaceError.messageTemplate = "whitespace-found";
+            whitespaceError.messageData = {
+                pluginName: longName
+            };
+            throw whitespaceError;
+        }
+
+        if (!this._plugins[shortName]) {
+            try {
+                plugin = require(longName);
+            } catch (pluginLoadErr) {
+                try {
+
+                    // Check whether the plugin exists
+                    require.resolve(longName);
+                } catch (missingPluginErr) {
+
+                    // If the plugin can't be resolved, display the missing plugin error (usually a config or install error)
+                    debug(`Failed to load plugin ${longName}.`);
+                    missingPluginErr.message = `Failed to load plugin ${pluginName}: ${missingPluginErr.message}`;
+                    missingPluginErr.messageTemplate = "plugin-missing";
+                    missingPluginErr.messageData = {
+                        pluginName: longName,
+                        eslintPath: path.resolve(__dirname, "../..")
+                    };
+                    throw missingPluginErr;
+                }
+
+                // Otherwise, the plugin exists and is throwing on module load for some reason, so print the stack trace.
+                throw pluginLoadErr;
+            }
+
+            // This step is costly, so skip if debug is disabled
+            if (debug.enabled) {
+                const resolvedPath = require.resolve(longName);
+
+                let version = null;
+
+                try {
+                    version = require(`${longName}/package.json`).version;
+                } catch (e) {
+
+                    // Do nothing
+                }
+
+                const loadedPluginAndVersion = version
+                    ? `${longName}@${version}`
+                    : `${longName}, version unknown`;
+
+                debug(`Loaded plugin ${pluginName} (${loadedPluginAndVersion}) (from ${resolvedPath})`);
+            }
+
+            this.define(pluginName, plugin);
+        }
+    }
+
+    /**
+     * Loads all plugins from an array.
+     * @param {string[]} pluginNames An array of plugins names.
+     * @returns {void}
+     * @throws {Error} If a plugin cannot be loaded.
+     * @throws {Error} If "plugins" in config is not an array
+     */
+    loadAll(pluginNames) {
+
+        // if "plugins" in config is not an array, throw an error so user can fix their config.
+        if (!Array.isArray(pluginNames)) {
+            const pluginNotArrayMessage = "ESLint configuration error: \"plugins\" value must be an array";
+
+            debug(`${pluginNotArrayMessage}: ${JSON.stringify(pluginNames)}`);
+
+            throw new Error(pluginNotArrayMessage);
+        }
+
+        // load each plugin by name
+        pluginNames.forEach(this.load, this);
+    }
+}
+
+module.exports = Plugins;

node_modules/eslint/lib/formatters/checkstyle.js

@@ -0,0 +1,60 @@
+/**
+ * @fileoverview CheckStyle XML reporter
+ * @author Ian Christian Myers
+ */
+"use strict";
+
+const xmlEscape = require("../util/xml-escape");
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the severity of warning or error
+ * @param {Object} message message object to examine
+ * @returns {string} severity level
+ * @private
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "error";
+    }
+    return "warning";
+
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "";
+
+    output += "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
+    output += "<checkstyle version=\"4.3\">";
+
+    results.forEach(result => {
+        const messages = result.messages;
+
+        output += `<file name="${xmlEscape(result.filePath)}">`;
+
+        messages.forEach(message => {
+            output += [
+                `<error line="${xmlEscape(message.line)}"`,
+                `column="${xmlEscape(message.column)}"`,
+                `severity="${xmlEscape(getMessageType(message))}"`,
+                `message="${xmlEscape(message.message)}${message.ruleId ? ` (${message.ruleId})` : ""}"`,
+                `source="${message.ruleId ? xmlEscape(`eslint.rules.${message.ruleId}`) : ""}" />`
+            ].join(" ");
+        });
+
+        output += "</file>";
+
+    });
+
+    output += "</checkstyle>";
+
+    return output;
+};

node_modules/eslint/lib/formatters/codeframe.js

@@ -0,0 +1,138 @@
+/**
+ * @fileoverview Codeframe reporter
+ * @author Vitor Balocco
+ */
+"use strict";
+
+const chalk = require("chalk");
+const { codeFrameColumns } = require("@babel/code-frame");
+const path = require("path");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Given a word and a count, append an s if count is not one.
+ * @param   {string} word  A word in its singular form.
+ * @param   {number} count A number controlling whether word should be pluralized.
+ * @returns {string}       The original word with an s on the end if count is not one.
+ */
+function pluralize(word, count) {
+    return (count === 1 ? word : `${word}s`);
+}
+
+/**
+ * Gets a formatted relative file path from an absolute path and a line/column in the file.
+ * @param   {string} filePath The absolute file path to format.
+ * @param   {number} line     The line from the file to use for formatting.
+ * @param   {number} column   The column from the file to use for formatting.
+ * @returns {string}          The formatted file path.
+ */
+function formatFilePath(filePath, line, column) {
+    let relPath = path.relative(process.cwd(), filePath);
+
+    if (line && column) {
+        relPath += `:${line}:${column}`;
+    }
+
+    return chalk.green(relPath);
+}
+
+/**
+ * Gets the formatted output for a given message.
+ * @param   {Object} message      The object that represents this message.
+ * @param   {Object} parentResult The result object that this message belongs to.
+ * @returns {string}              The formatted output.
+ */
+function formatMessage(message, parentResult) {
+    const type = (message.fatal || message.severity === 2) ? chalk.red("error") : chalk.yellow("warning");
+    const msg = `${chalk.bold(message.message.replace(/([^ ])\.$/, "$1"))}`;
+    const ruleId = message.fatal ? "" : chalk.dim(`(${message.ruleId})`);
+    const filePath = formatFilePath(parentResult.filePath, message.line, message.column);
+    const sourceCode = parentResult.output ? parentResult.output : parentResult.source;
+
+    const firstLine = [
+        `${type}:`,
+        `${msg}`,
+        ruleId ? `${ruleId}` : "",
+        sourceCode ? `at ${filePath}:` : `at ${filePath}`
+    ].filter(String).join(" ");
+
+    const result = [firstLine];
+
+    if (sourceCode) {
+        result.push(
+            codeFrameColumns(sourceCode, { start: { line: message.line, column: message.column } }, { highlightCode: false })
+        );
+    }
+
+    return result.join("\n");
+}
+
+/**
+ * Gets the formatted output summary for a given number of errors and warnings.
+ * @param   {number} errors   The number of errors.
+ * @param   {number} warnings The number of warnings.
+ * @param   {number} fixableErrors The number of fixable errors.
+ * @param   {number} fixableWarnings The number of fixable warnings.
+ * @returns {string}          The formatted output summary.
+ */
+function formatSummary(errors, warnings, fixableErrors, fixableWarnings) {
+    const summaryColor = errors > 0 ? "red" : "yellow";
+    const summary = [];
+    const fixablesSummary = [];
+
+    if (errors > 0) {
+        summary.push(`${errors} ${pluralize("error", errors)}`);
+    }
+
+    if (warnings > 0) {
+        summary.push(`${warnings} ${pluralize("warning", warnings)}`);
+    }
+
+    if (fixableErrors > 0) {
+        fixablesSummary.push(`${fixableErrors} ${pluralize("error", fixableErrors)}`);
+    }
+
+    if (fixableWarnings > 0) {
+        fixablesSummary.push(`${fixableWarnings} ${pluralize("warning", fixableWarnings)}`);
+    }
+
+    let output = chalk[summaryColor].bold(`${summary.join(" and ")} found.`);
+
+    if (fixableErrors || fixableWarnings) {
+        output += chalk[summaryColor].bold(`\n${fixablesSummary.join(" and ")} potentially fixable with the \`--fix\` option.`);
+    }
+
+    return output;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+    let errors = 0;
+    let warnings = 0;
+    let fixableErrors = 0;
+    let fixableWarnings = 0;
+
+    const resultsWithMessages = results.filter(result => result.messages.length > 0);
+
+    let output = resultsWithMessages.reduce((resultsOutput, result) => {
+        const messages = result.messages.map(message => `${formatMessage(message, result)}\n\n`);
+
+        errors += result.errorCount;
+        warnings += result.warningCount;
+        fixableErrors += result.fixableErrorCount;
+        fixableWarnings += result.fixableWarningCount;
+
+        return resultsOutput.concat(messages);
+    }, []).join("\n");
+
+    output += "\n";
+    output += formatSummary(errors, warnings, fixableErrors, fixableWarnings);
+
+    return (errors + warnings) > 0 ? output : "";
+};

node_modules/eslint/lib/formatters/compact.js

@@ -0,0 +1,60 @@
+/**
+ * @fileoverview Compact reporter
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the severity of warning or error
+ * @param {Object} message message object to examine
+ * @returns {string} severity level
+ * @private
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "Error";
+    }
+    return "Warning";
+
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "",
+        total = 0;
+
+    results.forEach(result => {
+
+        const messages = result.messages;
+
+        total += messages.length;
+
+        messages.forEach(message => {
+
+            output += `${result.filePath}: `;
+            output += `line ${message.line || 0}`;
+            output += `, col ${message.column || 0}`;
+            output += `, ${getMessageType(message)}`;
+            output += ` - ${message.message}`;
+            output += message.ruleId ? ` (${message.ruleId})` : "";
+            output += "\n";
+
+        });
+
+    });
+
+    if (total > 0) {
+        output += `\n${total} problem${total !== 1 ? "s" : ""}`;
+    }
+
+    return output;
+};

node_modules/eslint/lib/formatters/html-template-message.html

@@ -0,0 +1,8 @@
+<tr style="display:none" class="f-<%= parentIndex %>">
+    <td><%= lineNumber %>:<%= columnNumber %></td>
+    <td class="clr-<%= severityNumber %>"><%= severityName %></td>
+    <td><%- message %></td>
+    <td>
+        <a href="https://eslint.org/docs/rules/<%= ruleId %>" target="_blank" rel="noopener noreferrer"><%= ruleId %></a>
+    </td>
+</tr>

node_modules/eslint/lib/formatters/html-template-page.html

@@ -0,0 +1,115 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="UTF-8">
+        <title>ESLint Report</title>
+        <style>
+            body {
+                font-family:Arial, "Helvetica Neue", Helvetica, sans-serif;
+                font-size:16px;
+                font-weight:normal;
+                margin:0;
+                padding:0;
+                color:#333
+            }
+            #overview {
+                padding:20px 30px
+            }
+            td, th {
+                padding:5px 10px
+            }
+            h1 {
+                margin:0
+            }
+            table {
+                margin:30px;
+                width:calc(100% - 60px);
+                max-width:1000px;
+                border-radius:5px;
+                border:1px solid #ddd;
+                border-spacing:0px;
+            }
+            th {
+                font-weight:400;
+                font-size:medium;
+                text-align:left;
+                cursor:pointer
+            }
+            td.clr-1, td.clr-2, th span {
+                font-weight:700
+            }
+            th span {
+                float:right;
+                margin-left:20px
+            }
+            th span:after {
+                content:"";
+                clear:both;
+                display:block
+            }
+            tr:last-child td {
+                border-bottom:none
+            }
+            tr td:first-child, tr td:last-child {
+                color:#9da0a4
+            }
+            #overview.bg-0, tr.bg-0 th {
+                color:#468847;
+                background:#dff0d8;
+                border-bottom:1px solid #d6e9c6
+            }
+            #overview.bg-1, tr.bg-1 th {
+                color:#f0ad4e;
+                background:#fcf8e3;
+                border-bottom:1px solid #fbeed5
+            }
+            #overview.bg-2, tr.bg-2 th {
+                color:#b94a48;
+                background:#f2dede;
+                border-bottom:1px solid #eed3d7
+            }
+            td {
+                border-bottom:1px solid #ddd
+            }
+            td.clr-1 {
+                color:#f0ad4e
+            }
+            td.clr-2 {
+                color:#b94a48
+            }
+            td a {
+                color:#3a33d1;
+                text-decoration:none
+            }
+            td a:hover {
+                color:#272296;
+                text-decoration:underline
+            }
+        </style>
+    </head>
+    <body>
+        <div id="overview" class="bg-<%= reportColor %>">
+            <h1>ESLint Report</h1>
+            <div>
+                <span><%= reportSummary %></span> - Generated on <%= date %>
+            </div>
+        </div>
+        <table>
+            <tbody>
+                <%= results %>
+            </tbody>
+        </table>
+        <script type="text/javascript">
+            var groups = document.querySelectorAll("tr[data-group]");
+            for (i = 0; i < groups.length; i++) {
+                groups[i].addEventListener("click", function() {
+                    var inGroup = document.getElementsByClassName(this.getAttribute("data-group"));
+                    this.innerHTML = (this.innerHTML.indexOf("+") > -1) ? this.innerHTML.replace("+", "-") : this.innerHTML.replace("-", "+");
+                    for (var j = 0; j < inGroup.length; j++) {
+                        inGroup[j].style.display = (inGroup[j].style.display !== "none") ? "none" : "table-row";
+                    }
+                });
+            }
+        </script>
+    </body>
+</html>

node_modules/eslint/lib/formatters/html-template-result.html

@@ -0,0 +1,6 @@
+<tr class="bg-<%- color %>" data-group="f-<%- index %>">
+    <th colspan="4">
+        [+] <%- filePath %>
+        <span><%- summary %></span>
+    </th>
+</tr>

node_modules/eslint/lib/formatters/html.js

@@ -0,0 +1,127 @@
+/**
+ * @fileoverview HTML reporter
+ * @author Julian Laval
+ */
+"use strict";
+
+const lodash = require("lodash");
+const fs = require("fs");
+const path = require("path");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const pageTemplate = lodash.template(fs.readFileSync(path.join(__dirname, "html-template-page.html"), "utf-8"));
+const messageTemplate = lodash.template(fs.readFileSync(path.join(__dirname, "html-template-message.html"), "utf-8"));
+const resultTemplate = lodash.template(fs.readFileSync(path.join(__dirname, "html-template-result.html"), "utf-8"));
+
+/**
+ * Given a word and a count, append an s if count is not one.
+ * @param {string} word A word in its singular form.
+ * @param {int} count A number controlling whether word should be pluralized.
+ * @returns {string} The original word with an s on the end if count is not one.
+ */
+function pluralize(word, count) {
+    return (count === 1 ? word : `${word}s`);
+}
+
+/**
+ * Renders text along the template of x problems (x errors, x warnings)
+ * @param {string} totalErrors Total errors
+ * @param {string} totalWarnings Total warnings
+ * @returns {string} The formatted string, pluralized where necessary
+ */
+function renderSummary(totalErrors, totalWarnings) {
+    const totalProblems = totalErrors + totalWarnings;
+    let renderedText = `${totalProblems} ${pluralize("problem", totalProblems)}`;
+
+    if (totalProblems !== 0) {
+        renderedText += ` (${totalErrors} ${pluralize("error", totalErrors)}, ${totalWarnings} ${pluralize("warning", totalWarnings)})`;
+    }
+    return renderedText;
+}
+
+/**
+ * Get the color based on whether there are errors/warnings...
+ * @param {string} totalErrors Total errors
+ * @param {string} totalWarnings Total warnings
+ * @returns {int} The color code (0 = green, 1 = yellow, 2 = red)
+ */
+function renderColor(totalErrors, totalWarnings) {
+    if (totalErrors !== 0) {
+        return 2;
+    }
+    if (totalWarnings !== 0) {
+        return 1;
+    }
+    return 0;
+}
+
+/**
+ * Get HTML (table rows) describing the messages.
+ * @param {Array} messages Messages.
+ * @param {int} parentIndex Index of the parent HTML row.
+ * @returns {string} HTML (table rows) describing the messages.
+ */
+function renderMessages(messages, parentIndex) {
+
+    /**
+     * Get HTML (table row) describing a message.
+     * @param {Object} message Message.
+     * @returns {string} HTML (table row) describing a message.
+     */
+    return lodash.map(messages, message => {
+        const lineNumber = message.line || 0;
+        const columnNumber = message.column || 0;
+
+        return messageTemplate({
+            parentIndex,
+            lineNumber,
+            columnNumber,
+            severityNumber: message.severity,
+            severityName: message.severity === 1 ? "Warning" : "Error",
+            message: message.message,
+            ruleId: message.ruleId
+        });
+    }).join("\n");
+}
+
+/**
+ * @param {Array} results Test results.
+ * @returns {string} HTML string describing the results.
+ */
+function renderResults(results) {
+    return lodash.map(results, (result, index) => resultTemplate({
+        index,
+        color: renderColor(result.errorCount, result.warningCount),
+        filePath: result.filePath,
+        summary: renderSummary(result.errorCount, result.warningCount)
+
+    }) + renderMessages(result.messages, index)).join("\n");
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+    let totalErrors,
+        totalWarnings;
+
+    totalErrors = 0;
+    totalWarnings = 0;
+
+    // Iterate over results to get totals
+    results.forEach(result => {
+        totalErrors += result.errorCount;
+        totalWarnings += result.warningCount;
+    });
+
+    return pageTemplate({
+        date: new Date(),
+        reportColor: renderColor(totalErrors, totalWarnings),
+        reportSummary: renderSummary(totalErrors, totalWarnings),
+        results: renderResults(results)
+    });
+};

node_modules/eslint/lib/formatters/jslint-xml.js

@@ -0,0 +1,41 @@
+/**
+ * @fileoverview JSLint XML reporter
+ * @author Ian Christian Myers
+ */
+"use strict";
+
+const xmlEscape = require("../util/xml-escape");
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "";
+
+    output += "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
+    output += "<jslint>";
+
+    results.forEach(result => {
+        const messages = result.messages;
+
+        output += `<file name="${result.filePath}">`;
+
+        messages.forEach(message => {
+            output += [
+                `<issue line="${message.line}"`,
+                `char="${message.column}"`,
+                `evidence="${xmlEscape(message.source || "")}"`,
+                `reason="${xmlEscape(message.message || "")}${message.ruleId ? ` (${message.ruleId})` : ""}" />`
+            ].join(" ");
+        });
+
+        output += "</file>";
+
+    });
+
+    output += "</jslint>";
+
+    return output;
+};

node_modules/eslint/lib/formatters/json.js

@@ -0,0 +1,13 @@
+/**
+ * @fileoverview JSON reporter
+ * @author Burak Yigit Kaya aka BYK
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+    return JSON.stringify(results);
+};

node_modules/eslint/lib/formatters/junit.js

@@ -0,0 +1,70 @@
+/**
+ * @fileoverview jUnit Reporter
+ * @author Jamund Ferguson
+ */
+"use strict";
+
+const xmlEscape = require("../util/xml-escape");
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the severity of warning or error
+ * @param {Object} message message object to examine
+ * @returns {string} severity level
+ * @private
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "Error";
+    }
+    return "Warning";
+
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "";
+
+    output += "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
+    output += "<testsuites>\n";
+
+    results.forEach(result => {
+
+        const messages = result.messages;
+
+        if (messages.length > 0) {
+            output += `<testsuite package="org.eslint" time="0" tests="${messages.length}" errors="${messages.length}" name="${result.filePath}">\n`;
+            messages.forEach(message => {
+                const type = message.fatal ? "error" : "failure";
+
+                output += `<testcase time="0" name="org.eslint.${message.ruleId || "unknown"}">`;
+                output += `<${type} message="${xmlEscape(message.message || "")}">`;
+                output += "<![CDATA[";
+                output += `line ${message.line || 0}, col `;
+                output += `${message.column || 0}, ${getMessageType(message)}`;
+                output += ` - ${xmlEscape(message.message || "")}`;
+                output += (message.ruleId ? ` (${message.ruleId})` : "");
+                output += "]]>";
+                output += `</${type}>`;
+                output += "</testcase>\n";
+            });
+            output += "</testsuite>\n";
+        } else {
+            output += `<testsuite package="org.eslint" time="0" tests="1" errors="0" name="${result.filePath}">\n`;
+            output += `<testcase time="0" name="${result.filePath}" />\n`;
+            output += "</testsuite>\n";
+        }
+
+    });
+
+    output += "</testsuites>\n";
+
+    return output;
+};

node_modules/eslint/lib/formatters/stylish.js

@@ -0,0 +1,100 @@
+/**
+ * @fileoverview Stylish reporter
+ * @author Sindre Sorhus
+ */
+"use strict";
+
+const chalk = require("chalk"),
+    stripAnsi = require("strip-ansi"),
+    table = require("text-table");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Given a word and a count, append an s if count is not one.
+ * @param {string} word A word in its singular form.
+ * @param {int} count A number controlling whether word should be pluralized.
+ * @returns {string} The original word with an s on the end if count is not one.
+ */
+function pluralize(word, count) {
+    return (count === 1 ? word : `${word}s`);
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "\n",
+        errorCount = 0,
+        warningCount = 0,
+        fixableErrorCount = 0,
+        fixableWarningCount = 0,
+        summaryColor = "yellow";
+
+    results.forEach(result => {
+        const messages = result.messages;
+
+        if (messages.length === 0) {
+            return;
+        }
+
+        errorCount += result.errorCount;
+        warningCount += result.warningCount;
+        fixableErrorCount += result.fixableErrorCount;
+        fixableWarningCount += result.fixableWarningCount;
+
+        output += `${chalk.underline(result.filePath)}\n`;
+
+        output += `${table(
+            messages.map(message => {
+                let messageType;
+
+                if (message.fatal || message.severity === 2) {
+                    messageType = chalk.red("error");
+                    summaryColor = "red";
+                } else {
+                    messageType = chalk.yellow("warning");
+                }
+
+                return [
+                    "",
+                    message.line || 0,
+                    message.column || 0,
+                    messageType,
+                    message.message.replace(/([^ ])\.$/, "$1"),
+                    chalk.dim(message.ruleId || "")
+                ];
+            }),
+            {
+                align: ["", "r", "l"],
+                stringLength(str) {
+                    return stripAnsi(str).length;
+                }
+            }
+        ).split("\n").map(el => el.replace(/(\d+)\s+(\d+)/, (m, p1, p2) => chalk.dim(`${p1}:${p2}`))).join("\n")}\n\n`;
+    });
+
+    const total = errorCount + warningCount;
+
+    if (total > 0) {
+        output += chalk[summaryColor].bold([
+            "\u2716 ", total, pluralize(" problem", total),
+            " (", errorCount, pluralize(" error", errorCount), ", ",
+            warningCount, pluralize(" warning", warningCount), ")\n"
+        ].join(""));
+
+        if (fixableErrorCount > 0 || fixableWarningCount > 0) {
+            output += chalk[summaryColor].bold([
+                "  ", fixableErrorCount, pluralize(" error", fixableErrorCount), " and ",
+                fixableWarningCount, pluralize(" warning", fixableWarningCount),
+                " potentially fixable with the `--fix` option.\n"
+            ].join(""));
+        }
+    }
+
+    return total > 0 ? output : "";
+};

node_modules/eslint/lib/formatters/table.js

@@ -0,0 +1,150 @@
+/**
+ * @fileoverview "table reporter.
+ * @author Gajus Kuizinas <gajus@gajus.com>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const chalk = require("chalk"),
+    table = require("table").table,
+    pluralize = require("pluralize");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Draws text table.
+ * @param {Array<Object>} messages Error messages relating to a specific file.
+ * @returns {string} A text table.
+ */
+function drawTable(messages) {
+    const rows = [];
+
+    if (messages.length === 0) {
+        return "";
+    }
+
+    rows.push([
+        chalk.bold("Line"),
+        chalk.bold("Column"),
+        chalk.bold("Type"),
+        chalk.bold("Message"),
+        chalk.bold("Rule ID")
+    ]);
+
+    messages.forEach(message => {
+        let messageType;
+
+        if (message.fatal || message.severity === 2) {
+            messageType = chalk.red("error");
+        } else {
+            messageType = chalk.yellow("warning");
+        }
+
+        rows.push([
+            message.line || 0,
+            message.column || 0,
+            messageType,
+            message.message,
+            message.ruleId || ""
+        ]);
+    });
+
+    return table(rows, {
+        columns: {
+            0: {
+                width: 8,
+                wrapWord: true
+            },
+            1: {
+                width: 8,
+                wrapWord: true
+            },
+            2: {
+                width: 8,
+                wrapWord: true
+            },
+            3: {
+                paddingRight: 5,
+                width: 50,
+                wrapWord: true
+            },
+            4: {
+                width: 20,
+                wrapWord: true
+            }
+        },
+        drawHorizontalLine(index) {
+            return index === 1;
+        }
+    });
+}
+
+/**
+ * Draws a report (multiple tables).
+ * @param {Array} results Report results for every file.
+ * @returns {string} A column of text tables.
+ */
+function drawReport(results) {
+    let files;
+
+    files = results.map(result => {
+        if (!result.messages.length) {
+            return "";
+        }
+
+        return `\n${result.filePath}\n\n${drawTable(result.messages)}`;
+    });
+
+    files = files.filter(content => content.trim());
+
+    return files.join("");
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(report) {
+    let result,
+        errorCount,
+        warningCount;
+
+    result = "";
+    errorCount = 0;
+    warningCount = 0;
+
+    report.forEach(fileReport => {
+        errorCount += fileReport.errorCount;
+        warningCount += fileReport.warningCount;
+    });
+
+    if (errorCount || warningCount) {
+        result = drawReport(report);
+    }
+
+    result += `\n${table([
+        [
+            chalk.red(pluralize("Error", errorCount, true))
+        ],
+        [
+            chalk.yellow(pluralize("Warning", warningCount, true))
+        ]
+    ], {
+        columns: {
+            0: {
+                width: 110,
+                wrapWord: true
+            }
+        },
+        drawHorizontalLine() {
+            return true;
+        }
+    })}`;
+
+    return result;
+};

node_modules/eslint/lib/formatters/tap.js

@@ -0,0 +1,92 @@
+/**
+ * @fileoverview TAP reporter
+ * @author Jonathan Kingston
+ */
+"use strict";
+
+const yaml = require("js-yaml");
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns a canonical error level string based upon the error message passed in.
+ * @param {Object} message Individual error message provided by eslint
+ * @returns {string} Error level string
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "error";
+    }
+    return "warning";
+
+}
+
+/**
+ * Takes in a JavaScript object and outputs a TAP diagnostics string
+ * @param {Object} diagnostic JavaScript object to be embedded as YAML into output.
+ * @returns {string} diagnostics string with YAML embedded - TAP version 13 compliant
+ */
+function outputDiagnostics(diagnostic) {
+    const prefix = "  ";
+    let output = `${prefix}---\n`;
+
+    output += prefix + yaml.safeDump(diagnostic).split("\n").join(`\n${prefix}`);
+    output += "...\n";
+    return output;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+    let output = `TAP version 13\n1..${results.length}\n`;
+
+    results.forEach((result, id) => {
+        const messages = result.messages;
+        let testResult = "ok";
+        let diagnostics = {};
+
+        if (messages.length > 0) {
+            testResult = "not ok";
+
+            messages.forEach(message => {
+                const diagnostic = {
+                    message: message.message,
+                    severity: getMessageType(message),
+                    data: {
+                        line: message.line || 0,
+                        column: message.column || 0,
+                        ruleId: message.ruleId || ""
+                    }
+                };
+
+                /*
+                 * If we have multiple messages place them under a messages key
+                 * The first error will be logged as message key
+                 * This is to adhere to TAP 13 loosely defined specification of having a message key
+                 */
+                if ("message" in diagnostics) {
+                    if (typeof diagnostics.messages === "undefined") {
+                        diagnostics.messages = [];
+                    }
+                    diagnostics.messages.push(diagnostic);
+                } else {
+                    diagnostics = diagnostic;
+                }
+            });
+        }
+
+        output += `${testResult} ${id + 1} - ${result.filePath}\n`;
+
+        // If we have an error include diagnostics
+        if (messages.length > 0) {
+            output += outputDiagnostics(diagnostics);
+        }
+
+    });
+
+    return output;
+};

node_modules/eslint/lib/formatters/unix.js

@@ -0,0 +1,58 @@
+/**
+ * @fileoverview unix-style formatter.
+ * @author oshi-shinobu
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns a canonical error level string based upon the error message passed in.
+ * @param {Object} message Individual error message provided by eslint
+ * @returns {string} Error level string
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "Error";
+    }
+    return "Warning";
+
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "",
+        total = 0;
+
+    results.forEach(result => {
+
+        const messages = result.messages;
+
+        total += messages.length;
+
+        messages.forEach(message => {
+
+            output += `${result.filePath}:`;
+            output += `${message.line || 0}:`;
+            output += `${message.column || 0}:`;
+            output += ` ${message.message} `;
+            output += `[${getMessageType(message)}${message.ruleId ? `/${message.ruleId}` : ""}]`;
+            output += "\n";
+
+        });
+
+    });
+
+    if (total > 0) {
+        output += `\n${total} problem${total !== 1 ? "s" : ""}`;
+    }
+
+    return output;
+};

node_modules/eslint/lib/formatters/visualstudio.js

@@ -0,0 +1,63 @@
+/**
+ * @fileoverview Visual Studio compatible formatter
+ * @author Ronald Pijnacker
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the severity of warning or error
+ * @param {Object} message message object to examine
+ * @returns {string} severity level
+ * @private
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "error";
+    }
+    return "warning";
+
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "",
+        total = 0;
+
+    results.forEach(result => {
+
+        const messages = result.messages;
+
+        total += messages.length;
+
+        messages.forEach(message => {
+
+            output += result.filePath;
+            output += `(${message.line || 0}`;
+            output += message.column ? `,${message.column}` : "";
+            output += `): ${getMessageType(message)}`;
+            output += message.ruleId ? ` ${message.ruleId}` : "";
+            output += ` : ${message.message}`;
+            output += "\n";
+
+        });
+
+    });
+
+    if (total === 0) {
+        output += "no problems";
+    } else {
+        output += `\n${total} problem${total !== 1 ? "s" : ""}`;
+    }
+
+    return output;
+};

node_modules/eslint/lib/ignored-paths.js

@@ -0,0 +1,381 @@
+/**
+ * @fileoverview Responsible for loading ignore config files and managing ignore patterns
+ * @author Jonathan Rajavuori
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("fs"),
+    path = require("path"),
+    ignore = require("ignore"),
+    pathUtils = require("./util/path-utils");
+
+const debug = require("debug")("eslint:ignored-paths");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const ESLINT_IGNORE_FILENAME = ".eslintignore";
+
+/**
+ * Adds `"*"` at the end of `"node_modules/"`,
+ * so that subtle directories could be re-included by .gitignore patterns
+ * such as `"!node_modules/should_not_ignored"`
+ */
+const DEFAULT_IGNORE_DIRS = [
+    "/node_modules/*",
+    "/bower_components/*"
+];
+const DEFAULT_OPTIONS = {
+    dotfiles: false,
+    cwd: process.cwd()
+};
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Find a file in the current directory.
+ * @param {string} cwd Current working directory
+ * @param {string} name File name
+ * @returns {string} Path of ignore file or an empty string.
+ */
+function findFile(cwd, name) {
+    const ignoreFilePath = path.resolve(cwd, name);
+
+    return fs.existsSync(ignoreFilePath) && fs.statSync(ignoreFilePath).isFile() ? ignoreFilePath : "";
+}
+
+/**
+ * Find an ignore file in the current directory.
+ * @param {string} cwd Current working directory
+ * @returns {string} Path of ignore file or an empty string.
+ */
+function findIgnoreFile(cwd) {
+    return findFile(cwd, ESLINT_IGNORE_FILENAME);
+}
+
+/**
+ * Find an package.json file in the current directory.
+ * @param {string} cwd Current working directory
+ * @returns {string} Path of package.json file or an empty string.
+ */
+function findPackageJSONFile(cwd) {
+    return findFile(cwd, "package.json");
+}
+
+/**
+ * Merge options with defaults
+ * @param {Object} options Options to merge with DEFAULT_OPTIONS constant
+ * @returns {Object} Merged options
+ */
+function mergeDefaultOptions(options) {
+    return Object.assign({}, DEFAULT_OPTIONS, options);
+}
+
+/* eslint-disable valid-jsdoc */
+/**
+ * Normalize the path separators in a given string.
+ * On Windows environment, this replaces `\` by `/`.
+ * Otherwrise, this does nothing.
+ * @param {string} str The path string to normalize.
+ * @returns {string} The normalized path.
+ */
+const normalizePathSeps = path.sep === "/"
+    ? (str => str)
+    : ((seps, str) => str.replace(seps, "/")).bind(null, new RegExp(`\\${path.sep}`, "g"));
+/* eslint-enable valid-jsdoc */
+
+/**
+ * Converts a glob pattern to a new glob pattern relative to a different directory
+ * @param {string} globPattern The glob pattern, relative the the old base directory
+ * @param {string} relativePathToOldBaseDir A relative path from the new base directory to the old one
+ * @returns {string} A glob pattern relative to the new base directory
+ */
+function relativize(globPattern, relativePathToOldBaseDir) {
+    if (relativePathToOldBaseDir === "") {
+        return globPattern;
+    }
+
+    const prefix = globPattern.startsWith("!") ? "!" : "";
+    const globWithoutPrefix = globPattern.replace(/^!/, "");
+
+    if (globWithoutPrefix.startsWith("/")) {
+        return `${prefix}/${normalizePathSeps(relativePathToOldBaseDir)}${globWithoutPrefix}`;
+    }
+
+    return globPattern;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * IgnoredPaths class
+ */
+class IgnoredPaths {
+
+    /**
+     * @param {Object} providedOptions object containing 'ignore', 'ignorePath' and 'patterns' properties
+     */
+    constructor(providedOptions) {
+        const options = mergeDefaultOptions(providedOptions);
+
+        this.cache = {};
+
+        this.defaultPatterns = [].concat(DEFAULT_IGNORE_DIRS, options.patterns || []);
+
+        this.ignoreFileDir = options.ignore !== false && options.ignorePath
+            ? path.dirname(path.resolve(options.cwd, options.ignorePath))
+            : options.cwd;
+        this.options = options;
+        this._baseDir = null;
+
+        this.ig = {
+            custom: ignore(),
+            default: ignore()
+        };
+
+        this.defaultPatterns.forEach(pattern => this.addPatternRelativeToCwd(this.ig.default, pattern));
+        if (options.dotfiles !== true) {
+
+            /*
+             * ignore files beginning with a dot, but not files in a parent or
+             * ancestor directory (which in relative format will begin with `../`).
+             */
+            this.addPatternRelativeToCwd(this.ig.default, ".*");
+            this.addPatternRelativeToCwd(this.ig.default, "!../");
+        }
+
+        /*
+         * Add a way to keep track of ignored files.  This was present in node-ignore
+         * 2.x, but dropped for now as of 3.0.10.
+         */
+        this.ig.custom.ignoreFiles = [];
+        this.ig.default.ignoreFiles = [];
+
+        if (options.ignore !== false) {
+            let ignorePath;
+
+            if (options.ignorePath) {
+                debug("Using specific ignore file");
+
+                try {
+                    fs.statSync(options.ignorePath);
+                    ignorePath = options.ignorePath;
+                } catch (e) {
+                    e.message = `Cannot read ignore file: ${options.ignorePath}\nError: ${e.message}`;
+                    throw e;
+                }
+            } else {
+                debug(`Looking for ignore file in ${options.cwd}`);
+                ignorePath = findIgnoreFile(options.cwd);
+
+                try {
+                    fs.statSync(ignorePath);
+                    debug(`Loaded ignore file ${ignorePath}`);
+                } catch (e) {
+                    debug("Could not find ignore file in cwd");
+                }
+            }
+
+            if (ignorePath) {
+                debug(`Adding ${ignorePath}`);
+                this.addIgnoreFile(this.ig.custom, ignorePath);
+                this.addIgnoreFile(this.ig.default, ignorePath);
+            } else {
+                try {
+
+                    // if the ignoreFile does not exist, check package.json for eslintIgnore
+                    const packageJSONPath = findPackageJSONFile(options.cwd);
+
+                    if (packageJSONPath) {
+                        let packageJSONOptions;
+
+                        try {
+                            packageJSONOptions = JSON.parse(fs.readFileSync(packageJSONPath, "utf8"));
+                        } catch (e) {
+                            debug("Could not read package.json file to check eslintIgnore property");
+                            e.messageTemplate = "failed-to-read-json";
+                            e.messageData = {
+                                path: packageJSONPath,
+                                message: e.message
+                            };
+                            throw e;
+                        }
+
+                        if (packageJSONOptions.eslintIgnore) {
+                            if (Array.isArray(packageJSONOptions.eslintIgnore)) {
+                                packageJSONOptions.eslintIgnore.forEach(pattern => {
+                                    this.addPatternRelativeToIgnoreFile(this.ig.custom, pattern);
+                                    this.addPatternRelativeToIgnoreFile(this.ig.default, pattern);
+                                });
+                            } else {
+                                throw new TypeError("Package.json eslintIgnore property requires an array of paths");
+                            }
+                        }
+                    }
+                } catch (e) {
+                    debug("Could not find package.json to check eslintIgnore property");
+                    throw e;
+                }
+            }
+
+            if (options.ignorePattern) {
+                this.addPatternRelativeToCwd(this.ig.custom, options.ignorePattern);
+                this.addPatternRelativeToCwd(this.ig.default, options.ignorePattern);
+            }
+        }
+    }
+
+    /*
+     * If `ignoreFileDir` is a subdirectory of `cwd`, all paths will be normalized to be relative to `cwd`.
+     * Otherwise, all paths will be normalized to be relative to `ignoreFileDir`.
+     * This ensures that the final normalized ignore rule will not contain `..`, which is forbidden in
+     * ignore rules.
+     */
+
+    addPatternRelativeToCwd(ig, pattern) {
+        const baseDir = this.getBaseDir();
+        const cookedPattern = baseDir === this.options.cwd
+            ? pattern
+            : relativize(pattern, path.relative(baseDir, this.options.cwd));
+
+        ig.addPattern(cookedPattern);
+        debug("addPatternRelativeToCwd:\n  original = %j\n  cooked   = %j", pattern, cookedPattern);
+    }
+
+    addPatternRelativeToIgnoreFile(ig, pattern) {
+        const baseDir = this.getBaseDir();
+        const cookedPattern = baseDir === this.ignoreFileDir
+            ? pattern
+            : relativize(pattern, path.relative(baseDir, this.ignoreFileDir));
+
+        ig.addPattern(cookedPattern);
+        debug("addPatternRelativeToIgnoreFile:\n  original = %j\n  cooked   = %j", pattern, cookedPattern);
+    }
+
+    // Detect the common ancestor
+    getBaseDir() {
+        if (!this._baseDir) {
+            const a = path.resolve(this.options.cwd);
+            const b = path.resolve(this.ignoreFileDir);
+            let lastSepPos = 0;
+
+            // Set the shorter one (it's the common ancestor if one includes the other).
+            this._baseDir = a.length < b.length ? a : b;
+
+            // Set the common ancestor.
+            for (let i = 0; i < a.length && i < b.length; ++i) {
+                if (a[i] !== b[i]) {
+                    this._baseDir = a.slice(0, lastSepPos);
+                    break;
+                }
+                if (a[i] === path.sep) {
+                    lastSepPos = i;
+                }
+            }
+
+            // If it's only Windows drive letter, it needs \
+            if (/^[A-Z]:$/.test(this._baseDir)) {
+                this._baseDir += "\\";
+            }
+
+            debug("baseDir = %j", this._baseDir);
+        }
+        return this._baseDir;
+    }
+
+    /**
+     * read ignore filepath
+     * @param {string} filePath, file to add to ig
+     * @returns {array} raw ignore rules
+     */
+    readIgnoreFile(filePath) {
+        if (typeof this.cache[filePath] === "undefined") {
+            this.cache[filePath] = fs.readFileSync(filePath, "utf8").split(/\r?\n/g).filter(Boolean);
+        }
+        return this.cache[filePath];
+    }
+
+    /**
+     * add ignore file to node-ignore instance
+     * @param {Object} ig, instance of node-ignore
+     * @param {string} filePath, file to add to ig
+     * @returns {void}
+     */
+    addIgnoreFile(ig, filePath) {
+        ig.ignoreFiles.push(filePath);
+        this
+            .readIgnoreFile(filePath)
+            .forEach(ignoreRule => this.addPatternRelativeToIgnoreFile(ig, ignoreRule));
+    }
+
+    /**
+     * Determine whether a file path is included in the default or custom ignore patterns
+     * @param {string} filepath Path to check
+     * @param {string} [category=undefined] check 'default', 'custom' or both (undefined)
+     * @returns {boolean} true if the file path matches one or more patterns, false otherwise
+     */
+    contains(filepath, category) {
+
+        let result = false;
+        const absolutePath = path.resolve(this.options.cwd, filepath);
+        const relativePath = pathUtils.getRelativePath(absolutePath, this.getBaseDir());
+
+        if (typeof category === "undefined") {
+            result = (this.ig.default.filter([relativePath]).length === 0) ||
+                (this.ig.custom.filter([relativePath]).length === 0);
+        } else {
+            result = (this.ig[category].filter([relativePath]).length === 0);
+        }
+        debug("contains:");
+        debug("  target = %j", filepath);
+        debug("  result = %j", result);
+
+        return result;
+
+    }
+
+    /**
+     * Returns a list of dir patterns for glob to ignore
+     * @returns {function()} method to check whether a folder should be ignored by glob.
+     */
+    getIgnoredFoldersGlobChecker() {
+        const baseDir = this.getBaseDir();
+        const ig = ignore();
+
+        DEFAULT_IGNORE_DIRS.forEach(ignoreDir => this.addPatternRelativeToCwd(ig, ignoreDir));
+
+        if (this.options.dotfiles !== true) {
+
+            // Ignore hidden folders.  (This cannot be ".*", or else it's not possible to unignore hidden files)
+            ig.add([".*/*", "!../*"]);
+        }
+
+        if (this.options.ignore) {
+            ig.add(this.ig.custom);
+        }
+
+        const filter = ig.createFilter();
+
+        return function(absolutePath) {
+            const relative = pathUtils.getRelativePath(absolutePath, baseDir);
+
+            if (!relative) {
+                return false;
+            }
+
+            return !filter(relative);
+        };
+    }
+}
+
+module.exports = IgnoredPaths;

node_modules/eslint/lib/load-rules.js

@@ -0,0 +1,49 @@
+/**
+ * @fileoverview Module for loading rules from files and directories.
+ * @author Michael Ficarra
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("fs"),
+    path = require("path");
+
+const rulesDirCache = {};
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Load all rule modules from specified directory.
+ * @param {string} [relativeRulesDir] Path to rules directory, may be relative. Defaults to `lib/rules`.
+ * @param {string} cwd Current working directory
+ * @returns {Object} Loaded rule modules by rule ids (file names).
+ */
+module.exports = function(relativeRulesDir, cwd) {
+
+    const rulesDir = relativeRulesDir
+        ? path.resolve(cwd, relativeRulesDir)
+        : path.join(__dirname, "rules");
+
+    // cache will help performance as IO operation are expensive
+    if (rulesDirCache[rulesDir]) {
+        return rulesDirCache[rulesDir];
+    }
+
+    const rules = Object.create(null);
+
+    fs.readdirSync(rulesDir).forEach(file => {
+        if (path.extname(file) !== ".js") {
+            return;
+        }
+        rules[file.slice(0, -3)] = path.join(rulesDir, file);
+    });
+    rulesDirCache[rulesDir] = rules;
+
+    return rules;
+};

node_modules/eslint/lib/options.js

@@ -0,0 +1,246 @@
+/**
+ * @fileoverview Options configuration for optionator.
+ * @author George Zahariev
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const optionator = require("optionator");
+
+//------------------------------------------------------------------------------
+// Initialization and Public Interface
+//------------------------------------------------------------------------------
+
+// exports "parse(args)", "generateHelp()", and "generateHelpForOption(optionName)"
+module.exports = optionator({
+    prepend: "eslint [options] file.js [file.js] [dir]",
+    defaults: {
+        concatRepeatedArrays: true,
+        mergeRepeatedObjects: true
+    },
+    options: [
+        {
+            heading: "Basic configuration"
+        },
+        {
+            option: "eslintrc",
+            type: "Boolean",
+            default: "true",
+            description: "Disable use of configuration from .eslintrc.*"
+        },
+        {
+            option: "config",
+            alias: "c",
+            type: "path::String",
+            description: "Use this configuration, overriding .eslintrc.* config options if present"
+        },
+        {
+            option: "env",
+            type: "[String]",
+            description: "Specify environments"
+        },
+        {
+            option: "ext",
+            type: "[String]",
+            default: ".js",
+            description: "Specify JavaScript file extensions"
+        },
+        {
+            option: "global",
+            type: "[String]",
+            description: "Define global variables"
+        },
+        {
+            option: "parser",
+            type: "String",
+            description: "Specify the parser to be used"
+        },
+        {
+            option: "parser-options",
+            type: "Object",
+            description: "Specify parser options"
+        },
+        {
+            heading: "Specifying rules and plugins"
+        },
+        {
+            option: "rulesdir",
+            type: "[path::String]",
+            description: "Use additional rules from this directory"
+        },
+        {
+            option: "plugin",
+            type: "[String]",
+            description: "Specify plugins"
+        },
+        {
+            option: "rule",
+            type: "Object",
+            description: "Specify rules"
+        },
+        {
+            heading: "Fixing problems"
+        },
+        {
+            option: "fix",
+            type: "Boolean",
+            default: false,
+            description: "Automatically fix problems"
+        },
+        {
+            option: "fix-dry-run",
+            type: "Boolean",
+            default: false,
+            description: "Automatically fix problems without saving the changes to the file system"
+        },
+        {
+            option: "fix-type",
+            type: "Array",
+            description: "Specify the types of fixes to apply (problem, suggestion, layout)"
+        },
+        {
+            heading: "Ignoring files"
+        },
+        {
+            option: "ignore-path",
+            type: "path::String",
+            description: "Specify path of ignore file"
+        },
+        {
+            option: "ignore",
+            type: "Boolean",
+            default: "true",
+            description: "Disable use of ignore files and patterns"
+        },
+        {
+            option: "ignore-pattern",
+            type: "[String]",
+            description: "Pattern of files to ignore (in addition to those in .eslintignore)",
+            concatRepeatedArrays: [true, {
+                oneValuePerFlag: true
+            }]
+        },
+        {
+            heading: "Using stdin"
+        },
+        {
+            option: "stdin",
+            type: "Boolean",
+            default: "false",
+            description: "Lint code provided on <STDIN>"
+        },
+        {
+            option: "stdin-filename",
+            type: "String",
+            description: "Specify filename to process STDIN as"
+        },
+        {
+            heading: "Handling warnings"
+        },
+        {
+            option: "quiet",
+            type: "Boolean",
+            default: "false",
+            description: "Report errors only"
+        },
+        {
+            option: "max-warnings",
+            type: "Int",
+            default: "-1",
+            description: "Number of warnings to trigger nonzero exit code"
+        },
+        {
+            heading: "Output"
+        },
+        {
+            option: "output-file",
+            alias: "o",
+            type: "path::String",
+            description: "Specify file to write report to"
+        },
+        {
+            option: "format",
+            alias: "f",
+            type: "String",
+            default: "stylish",
+            description: "Use a specific output format"
+        },
+        {
+            option: "color",
+            type: "Boolean",
+            alias: "no-color",
+            description: "Force enabling/disabling of color"
+        },
+        {
+            heading: "Inline configuration comments"
+        },
+        {
+            option: "inline-config",
+            type: "Boolean",
+            default: "true",
+            description: "Prevent comments from changing config or rules"
+        },
+        {
+            option: "report-unused-disable-directives",
+            type: "Boolean",
+            default: false,
+            description: "Adds reported errors for unused eslint-disable directives"
+        },
+        {
+            heading: "Caching"
+        },
+        {
+            option: "cache",
+            type: "Boolean",
+            default: "false",
+            description: "Only check changed files"
+        },
+        {
+            option: "cache-file",
+            type: "path::String",
+            default: ".eslintcache",
+            description: "Path to the cache file. Deprecated: use --cache-location"
+        },
+        {
+            option: "cache-location",
+            type: "path::String",
+            description: "Path to the cache file or directory"
+        },
+        {
+            heading: "Miscellaneous"
+        },
+        {
+            option: "init",
+            type: "Boolean",
+            default: "false",
+            description: "Run config initialization wizard"
+        },
+        {
+            option: "debug",
+            type: "Boolean",
+            default: false,
+            description: "Output debugging information"
+        },
+        {
+            option: "help",
+            alias: "h",
+            type: "Boolean",
+            description: "Show help"
+        },
+        {
+            option: "version",
+            alias: "v",
+            type: "Boolean",
+            description: "Output the version number"
+        },
+        {
+            option: "print-config",
+            type: "path::String",
+            description: "Print the configuration for the given file"
+        }
+    ]
+});

node_modules/eslint/lib/report-translator.js

@@ -0,0 +1,281 @@
+/**
+ * @fileoverview A helper that translates context.report() calls from the rule API into generic problem objects
+ * @author Teddy Katz
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const assert = require("assert");
+const ruleFixer = require("./util/rule-fixer");
+const interpolate = require("./util/interpolate");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/**
+ * An error message description
+ * @typedef {Object} MessageDescriptor
+ * @property {ASTNode} [node] The reported node
+ * @property {Location} loc The location of the problem.
+ * @property {string} message The problem message.
+ * @property {Object} [data] Optional data to use to fill in placeholders in the
+ *      message.
+ * @property {Function} [fix] The function to call that creates a fix command.
+ */
+
+/**
+ * Information about the report
+ * @typedef {Object} ReportInfo
+ * @property {string} ruleId
+ * @property {(0|1|2)} severity
+ * @property {(string|undefined)} message
+ * @property {(string|undefined)} messageId
+ * @property {number} line
+ * @property {number} column
+ * @property {(number|undefined)} endLine
+ * @property {(number|undefined)} endColumn
+ * @property {(string|null)} nodeType
+ * @property {string} source
+ * @property {({text: string, range: (number[]|null)}|null)} fix
+ */
+
+//------------------------------------------------------------------------------
+// Module Definition
+//------------------------------------------------------------------------------
+
+
+/**
+ * Translates a multi-argument context.report() call into a single object argument call
+ * @param {...*} args A list of arguments passed to `context.report`
+ * @returns {MessageDescriptor} A normalized object containing report information
+ */
+function normalizeMultiArgReportCall(...args) {
+
+    // If there is one argument, it is considered to be a new-style call already.
+    if (args.length === 1) {
+
+        // Shallow clone the object to avoid surprises if reusing the descriptor
+        return Object.assign({}, args[0]);
+    }
+
+    // If the second argument is a string, the arguments are interpreted as [node, message, data, fix].
+    if (typeof args[1] === "string") {
+        return {
+            node: args[0],
+            message: args[1],
+            data: args[2],
+            fix: args[3]
+        };
+    }
+
+    // Otherwise, the arguments are interpreted as [node, loc, message, data, fix].
+    return {
+        node: args[0],
+        loc: args[1],
+        message: args[2],
+        data: args[3],
+        fix: args[4]
+    };
+}
+
+/**
+ * Asserts that either a loc or a node was provided, and the node is valid if it was provided.
+ * @param {MessageDescriptor} descriptor A descriptor to validate
+ * @returns {void}
+ * @throws AssertionError if neither a node nor a loc was provided, or if the node is not an object
+ */
+function assertValidNodeInfo(descriptor) {
+    if (descriptor.node) {
+        assert(typeof descriptor.node === "object", "Node must be an object");
+    } else {
+        assert(descriptor.loc, "Node must be provided when reporting error if location is not provided");
+    }
+}
+
+/**
+ * Normalizes a MessageDescriptor to always have a `loc` with `start` and `end` properties
+ * @param {MessageDescriptor} descriptor A descriptor for the report from a rule.
+ * @returns {{start: Location, end: (Location|null)}} An updated location that infers the `start` and `end` properties
+ * from the `node` of the original descriptor, or infers the `start` from the `loc` of the original descriptor.
+ */
+function normalizeReportLoc(descriptor) {
+    if (descriptor.loc) {
+        if (descriptor.loc.start) {
+            return descriptor.loc;
+        }
+        return { start: descriptor.loc, end: null };
+    }
+    return descriptor.node.loc;
+}
+
+/**
+ * Compares items in a fixes array by range.
+ * @param {Fix} a The first message.
+ * @param {Fix} b The second message.
+ * @returns {int} -1 if a comes before b, 1 if a comes after b, 0 if equal.
+ * @private
+ */
+function compareFixesByRange(a, b) {
+    return a.range[0] - b.range[0] || a.range[1] - b.range[1];
+}
+
+/**
+ * Merges the given fixes array into one.
+ * @param {Fix[]} fixes The fixes to merge.
+ * @param {SourceCode} sourceCode The source code object to get the text between fixes.
+ * @returns {{text: string, range: number[]}} The merged fixes
+ */
+function mergeFixes(fixes, sourceCode) {
+    if (fixes.length === 0) {
+        return null;
+    }
+    if (fixes.length === 1) {
+        return fixes[0];
+    }
+
+    fixes.sort(compareFixesByRange);
+
+    const originalText = sourceCode.text;
+    const start = fixes[0].range[0];
+    const end = fixes[fixes.length - 1].range[1];
+    let text = "";
+    let lastPos = Number.MIN_SAFE_INTEGER;
+
+    for (const fix of fixes) {
+        assert(fix.range[0] >= lastPos, "Fix objects must not be overlapped in a report.");
+
+        if (fix.range[0] >= 0) {
+            text += originalText.slice(Math.max(0, start, lastPos), fix.range[0]);
+        }
+        text += fix.text;
+        lastPos = fix.range[1];
+    }
+    text += originalText.slice(Math.max(0, start, lastPos), end);
+
+    return { range: [start, end], text };
+}
+
+/**
+ * Gets one fix object from the given descriptor.
+ * If the descriptor retrieves multiple fixes, this merges those to one.
+ * @param {MessageDescriptor} descriptor The report descriptor.
+ * @param {SourceCode} sourceCode The source code object to get text between fixes.
+ * @returns {({text: string, range: number[]}|null)} The fix for the descriptor
+ */
+function normalizeFixes(descriptor, sourceCode) {
+    if (typeof descriptor.fix !== "function") {
+        return null;
+    }
+
+    // @type {null | Fix | Fix[] | IterableIterator<Fix>}
+    const fix = descriptor.fix(ruleFixer);
+
+    // Merge to one.
+    if (fix && Symbol.iterator in fix) {
+        return mergeFixes(Array.from(fix), sourceCode);
+    }
+    return fix;
+}
+
+/**
+ * Creates information about the report from a descriptor
+ * @param {Object} options Information about the problem
+ * @param {string} options.ruleId Rule ID
+ * @param {(0|1|2)} options.severity Rule severity
+ * @param {(ASTNode|null)} options.node Node
+ * @param {string} options.message Error message
+ * @param {string} [options.messageId] The error message ID.
+ * @param {{start: SourceLocation, end: (SourceLocation|null)}} options.loc Start and end location
+ * @param {{text: string, range: (number[]|null)}} options.fix The fix object
+ * @returns {function(...args): ReportInfo} Function that returns information about the report
+ */
+function createProblem(options) {
+    const problem = {
+        ruleId: options.ruleId,
+        severity: options.severity,
+        message: options.message,
+        line: options.loc.start.line,
+        column: options.loc.start.column + 1,
+        nodeType: options.node && options.node.type || null
+    };
+
+    /*
+     * If this isn’t in the conditional, some of the tests fail
+     * because `messageId` is present in the problem object
+     */
+    if (options.messageId) {
+        problem.messageId = options.messageId;
+    }
+
+    if (options.loc.end) {
+        problem.endLine = options.loc.end.line;
+        problem.endColumn = options.loc.end.column + 1;
+    }
+
+    if (options.fix) {
+        problem.fix = options.fix;
+    }
+
+    return problem;
+}
+
+/**
+ * Returns a function that converts the arguments of a `context.report` call from a rule into a reported
+ * problem for the Node.js API.
+ * @param {{ruleId: string, severity: number, sourceCode: SourceCode, messageIds: Object}} metadata Metadata for the reported problem
+ * @param {SourceCode} sourceCode The `SourceCode` instance for the text being linted
+ * @returns {function(...args): ReportInfo} Function that returns information about the report
+ */
+
+module.exports = function createReportTranslator(metadata) {
+
+    /*
+     * `createReportTranslator` gets called once per enabled rule per file. It needs to be very performant.
+     * The report translator itself (i.e. the function that `createReportTranslator` returns) gets
+     * called every time a rule reports a problem, which happens much less frequently (usually, the vast
+     * majority of rules don't report any problems for a given file).
+     */
+    return (...args) => {
+        const descriptor = normalizeMultiArgReportCall(...args);
+
+        assertValidNodeInfo(descriptor);
+
+        let computedMessage;
+
+        if (descriptor.messageId) {
+            if (!metadata.messageIds) {
+                throw new TypeError("context.report() called with a messageId, but no messages were present in the rule metadata.");
+            }
+            const id = descriptor.messageId;
+            const messages = metadata.messageIds;
+
+            if (descriptor.message) {
+                throw new TypeError("context.report() called with a message and a messageId. Please only pass one.");
+            }
+            if (!messages || !Object.prototype.hasOwnProperty.call(messages, id)) {
+                throw new TypeError(`context.report() called with a messageId of '${id}' which is not present in the 'messages' config: ${JSON.stringify(messages, null, 2)}`);
+            }
+            computedMessage = messages[id];
+        } else if (descriptor.message) {
+            computedMessage = descriptor.message;
+        } else {
+            throw new TypeError("Missing `message` property in report() call; add a message that describes the linting problem.");
+        }
+
+
+        return createProblem({
+            ruleId: metadata.ruleId,
+            severity: metadata.severity,
+            node: descriptor.node,
+            message: interpolate(computedMessage, descriptor.data),
+            messageId: descriptor.messageId,
+            loc: normalizeReportLoc(descriptor),
+            fix: normalizeFixes(descriptor, metadata.sourceCode)
+        });
+    };
+};

node_modules/eslint/lib/rules.js

@@ -0,0 +1,140 @@
+/**
+ * @fileoverview Defines a storage for rules.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+const loadRules = require("./load-rules");
+const ruleReplacements = require("../conf/replacements").rules;
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Creates a stub rule that gets used when a rule with a given ID is not found.
+ * @param {string} ruleId The ID of the missing rule
+ * @returns {{create: function(RuleContext): Object}} A rule that reports an error at the first location
+ * in the program. The report has the message `Definition for rule '${ruleId}' was not found` if the rule is unknown,
+ * or `Rule '${ruleId}' was removed and replaced by: ${replacements.join(", ")}` if the rule is known to have been
+ * replaced.
+ */
+const createMissingRule = lodash.memoize(ruleId => {
+    const message = Object.prototype.hasOwnProperty.call(ruleReplacements, ruleId)
+        ? `Rule '${ruleId}' was removed and replaced by: ${ruleReplacements[ruleId].join(", ")}`
+        : `Definition for rule '${ruleId}' was not found`;
+
+    return {
+        create: context => ({
+            Program() {
+                context.report({
+                    loc: { line: 1, column: 0 },
+                    message
+                });
+            }
+        })
+    };
+});
+
+/**
+ * Normalizes a rule module to the new-style API
+ * @param {(Function|{create: Function})} rule A rule object, which can either be a function
+ * ("old-style") or an object with a `create` method ("new-style")
+ * @returns {{create: Function}} A new-style rule.
+ */
+function normalizeRule(rule) {
+    return typeof rule === "function" ? Object.assign({ create: rule }, rule) : rule;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+class Rules {
+    constructor() {
+        this._rules = Object.create(null);
+
+        this.load();
+    }
+
+    /**
+     * Registers a rule module for rule id in storage.
+     * @param {string} ruleId Rule id (file name).
+     * @param {Function} ruleModule Rule handler.
+     * @returns {void}
+     */
+    define(ruleId, ruleModule) {
+        this._rules[ruleId] = normalizeRule(ruleModule);
+    }
+
+    /**
+     * Loads and registers all rules from passed rules directory.
+     * @param {string} [rulesDir] Path to rules directory, may be relative. Defaults to `lib/rules`.
+     * @param {string} cwd Current working directory
+     * @returns {void}
+     */
+    load(rulesDir, cwd) {
+        const newRules = loadRules(rulesDir, cwd);
+
+        Object.keys(newRules).forEach(ruleId => {
+            this.define(ruleId, newRules[ruleId]);
+        });
+    }
+
+    /**
+     * Registers all given rules of a plugin.
+     * @param {Object} plugin The plugin object to import.
+     * @param {string} pluginName The name of the plugin without prefix (`eslint-plugin-`).
+     * @returns {void}
+     */
+    importPlugin(plugin, pluginName) {
+        if (plugin.rules) {
+            Object.keys(plugin.rules).forEach(ruleId => {
+                const qualifiedRuleId = `${pluginName}/${ruleId}`,
+                    rule = plugin.rules[ruleId];
+
+                this.define(qualifiedRuleId, rule);
+            });
+        }
+    }
+
+    /**
+     * Access rule handler by id (file name).
+     * @param {string} ruleId Rule id (file name).
+     * @returns {{create: Function, schema: JsonSchema[]}}
+     * A rule. This is normalized to always have the new-style shape with a `create` method.
+     */
+    get(ruleId) {
+        if (!Object.prototype.hasOwnProperty.call(this._rules, ruleId)) {
+            return createMissingRule(ruleId);
+        }
+        if (typeof this._rules[ruleId] === "string") {
+            return normalizeRule(require(this._rules[ruleId]));
+        }
+        return this._rules[ruleId];
+
+    }
+
+    /**
+     * Get an object with all currently loaded rules
+     * @returns {Map} All loaded rules
+     */
+    getAllLoadedRules() {
+        const allRules = new Map();
+
+        Object.keys(this._rules).forEach(name => {
+            const rule = this.get(name);
+
+            allRules.set(name, rule);
+        });
+        return allRules;
+    }
+}
+
+module.exports = Rules;

node_modules/eslint/lib/rules/accessor-pairs.js

@@ -0,0 +1,165 @@
+/**
+ * @fileoverview Rule to flag wrapping non-iife in parens
+ * @author Gyandeep Singh
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is an `Identifier` node which was named a given name.
+ * @param {ASTNode} node - A node to check.
+ * @param {string} name - An expected name of the node.
+ * @returns {boolean} `true` if the node is an `Identifier` node which was named as expected.
+ */
+function isIdentifier(node, name) {
+    return node.type === "Identifier" && node.name === name;
+}
+
+/**
+ * Checks whether or not a given node is an argument of a specified method call.
+ * @param {ASTNode} node - A node to check.
+ * @param {number} index - An expected index of the node in arguments.
+ * @param {string} object - An expected name of the object of the method.
+ * @param {string} property - An expected name of the method.
+ * @returns {boolean} `true` if the node is an argument of the specified method call.
+ */
+function isArgumentOfMethodCall(node, index, object, property) {
+    const parent = node.parent;
+
+    return (
+        parent.type === "CallExpression" &&
+        parent.callee.type === "MemberExpression" &&
+        parent.callee.computed === false &&
+        isIdentifier(parent.callee.object, object) &&
+        isIdentifier(parent.callee.property, property) &&
+        parent.arguments[index] === node
+    );
+}
+
+/**
+ * Checks whether or not a given node is a property descriptor.
+ * @param {ASTNode} node - A node to check.
+ * @returns {boolean} `true` if the node is a property descriptor.
+ */
+function isPropertyDescriptor(node) {
+
+    // Object.defineProperty(obj, "foo", {set: ...})
+    if (isArgumentOfMethodCall(node, 2, "Object", "defineProperty") ||
+        isArgumentOfMethodCall(node, 2, "Reflect", "defineProperty")
+    ) {
+        return true;
+    }
+
+    /*
+     * Object.defineProperties(obj, {foo: {set: ...}})
+     * Object.create(proto, {foo: {set: ...}})
+     */
+    const grandparent = node.parent.parent;
+
+    return grandparent.type === "ObjectExpression" && (
+        isArgumentOfMethodCall(grandparent, 1, "Object", "create") ||
+        isArgumentOfMethodCall(grandparent, 1, "Object", "defineProperties")
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce getter and setter pairs in objects",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/accessor-pairs"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                getWithoutSet: {
+                    type: "boolean"
+                },
+                setWithoutGet: {
+                    type: "boolean"
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            getter: "Getter is not present.",
+            setter: "Setter is not present."
+        }
+    },
+    create(context) {
+        const config = context.options[0] || {};
+        const checkGetWithoutSet = config.getWithoutSet === true;
+        const checkSetWithoutGet = config.setWithoutGet !== false;
+
+        /**
+         * Checks a object expression to see if it has setter and getter both present or none.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkLonelySetGet(node) {
+            let isSetPresent = false;
+            let isGetPresent = false;
+            const isDescriptor = isPropertyDescriptor(node);
+
+            for (let i = 0, end = node.properties.length; i < end; i++) {
+                const property = node.properties[i];
+
+                let propToCheck = "";
+
+                if (property.kind === "init") {
+                    if (isDescriptor && !property.computed) {
+                        propToCheck = property.key.name;
+                    }
+                } else {
+                    propToCheck = property.kind;
+                }
+
+                switch (propToCheck) {
+                    case "set":
+                        isSetPresent = true;
+                        break;
+
+                    case "get":
+                        isGetPresent = true;
+                        break;
+
+                    default:
+
+                        // Do nothing
+                }
+
+                if (isSetPresent && isGetPresent) {
+                    break;
+                }
+            }
+
+            if (checkSetWithoutGet && isSetPresent && !isGetPresent) {
+                context.report({ node, messageId: "getter" });
+            } else if (checkGetWithoutSet && isGetPresent && !isSetPresent) {
+                context.report({ node, messageId: "setter" });
+            }
+        }
+
+        return {
+            ObjectExpression(node) {
+                if (checkSetWithoutGet || checkGetWithoutSet) {
+                    checkLonelySetGet(node);
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/array-bracket-newline.js

@@ -0,0 +1,261 @@
+/**
+ * @fileoverview Rule to enforce linebreaks after open and before close array brackets
+ * @author Jan Peer Stöcklmair <https://github.com/JPeer264>
+ */
+
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce linebreaks after opening and before closing array brackets",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/array-bracket-newline"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["always", "never", "consistent"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            multiline: {
+                                type: "boolean"
+                            },
+                            minItems: {
+                                type: ["integer", "null"],
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            unexpectedOpeningLinebreak: "There should be no linebreak after '['.",
+            unexpectedClosingLinebreak: "There should be no linebreak before ']'.",
+            missingOpeningLinebreak: "A linebreak is required after '['.",
+            missingClosingLinebreak: "A linebreak is required before ']'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Normalizes a given option value.
+         *
+         * @param {string|Object|undefined} option - An option value to parse.
+         * @returns {{multiline: boolean, minItems: number}} Normalized option object.
+         */
+        function normalizeOptionValue(option) {
+            let consistent = false;
+            let multiline = false;
+            let minItems = 0;
+
+            if (option) {
+                if (option === "consistent") {
+                    consistent = true;
+                    minItems = Number.POSITIVE_INFINITY;
+                } else if (option === "always" || option.minItems === 0) {
+                    minItems = 0;
+                } else if (option === "never") {
+                    minItems = Number.POSITIVE_INFINITY;
+                } else {
+                    multiline = Boolean(option.multiline);
+                    minItems = option.minItems || Number.POSITIVE_INFINITY;
+                }
+            } else {
+                consistent = false;
+                multiline = true;
+                minItems = Number.POSITIVE_INFINITY;
+            }
+
+            return { consistent, multiline, minItems };
+        }
+
+        /**
+         * Normalizes a given option value.
+         *
+         * @param {string|Object|undefined} options - An option value to parse.
+         * @returns {{ArrayExpression: {multiline: boolean, minItems: number}, ArrayPattern: {multiline: boolean, minItems: number}}} Normalized option object.
+         */
+        function normalizeOptions(options) {
+            const value = normalizeOptionValue(options);
+
+            return { ArrayExpression: value, ArrayPattern: value };
+        }
+
+        /**
+         * Reports that there shouldn't be a linebreak after the first token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoBeginningLinebreak(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "unexpectedOpeningLinebreak",
+                fix(fixer) {
+                    const nextToken = sourceCode.getTokenAfter(token, { includeComments: true });
+
+                    if (astUtils.isCommentToken(nextToken)) {
+                        return null;
+                    }
+
+                    return fixer.removeRange([token.range[1], nextToken.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there shouldn't be a linebreak before the last token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoEndingLinebreak(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "unexpectedClosingLinebreak",
+                fix(fixer) {
+                    const previousToken = sourceCode.getTokenBefore(token, { includeComments: true });
+
+                    if (astUtils.isCommentToken(previousToken)) {
+                        return null;
+                    }
+
+                    return fixer.removeRange([previousToken.range[1], token.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a linebreak after the first token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredBeginningLinebreak(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "missingOpeningLinebreak",
+                fix(fixer) {
+                    return fixer.insertTextAfter(token, "\n");
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a linebreak before the last token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredEndingLinebreak(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "missingClosingLinebreak",
+                fix(fixer) {
+                    return fixer.insertTextBefore(token, "\n");
+                }
+            });
+        }
+
+        /**
+         * Reports a given node if it violated this rule.
+         *
+         * @param {ASTNode} node - A node to check. This is an ArrayExpression node or an ArrayPattern node.
+         * @returns {void}
+         */
+        function check(node) {
+            const elements = node.elements;
+            const normalizedOptions = normalizeOptions(context.options[0]);
+            const options = normalizedOptions[node.type];
+            const openBracket = sourceCode.getFirstToken(node);
+            const closeBracket = sourceCode.getLastToken(node);
+            const firstIncComment = sourceCode.getTokenAfter(openBracket, { includeComments: true });
+            const lastIncComment = sourceCode.getTokenBefore(closeBracket, { includeComments: true });
+            const first = sourceCode.getTokenAfter(openBracket);
+            const last = sourceCode.getTokenBefore(closeBracket);
+
+            const needsLinebreaks = (
+                elements.length >= options.minItems ||
+                (
+                    options.multiline &&
+                    elements.length > 0 &&
+                    firstIncComment.loc.start.line !== lastIncComment.loc.end.line
+                ) ||
+                (
+                    elements.length === 0 &&
+                    firstIncComment.type === "Block" &&
+                    firstIncComment.loc.start.line !== lastIncComment.loc.end.line &&
+                    firstIncComment === lastIncComment
+                ) ||
+                (
+                    options.consistent &&
+                    firstIncComment.loc.start.line !== openBracket.loc.end.line
+                )
+            );
+
+            /*
+             * Use tokens or comments to check multiline or not.
+             * But use only tokens to check whether linebreaks are needed.
+             * This allows:
+             *     var arr = [ // eslint-disable-line foo
+             *         'a'
+             *     ]
+             */
+
+            if (needsLinebreaks) {
+                if (astUtils.isTokenOnSameLine(openBracket, first)) {
+                    reportRequiredBeginningLinebreak(node, openBracket);
+                }
+                if (astUtils.isTokenOnSameLine(last, closeBracket)) {
+                    reportRequiredEndingLinebreak(node, closeBracket);
+                }
+            } else {
+                if (!astUtils.isTokenOnSameLine(openBracket, first)) {
+                    reportNoBeginningLinebreak(node, openBracket);
+                }
+                if (!astUtils.isTokenOnSameLine(last, closeBracket)) {
+                    reportNoEndingLinebreak(node, closeBracket);
+                }
+            }
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            ArrayPattern: check,
+            ArrayExpression: check
+        };
+    }
+};

node_modules/eslint/lib/rules/array-bracket-spacing.js

@@ -0,0 +1,241 @@
+/**
+ * @fileoverview Disallows or enforces spaces inside of array brackets.
+ * @author Jamund Ferguson
+ */
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent spacing inside array brackets",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/array-bracket-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            },
+            {
+                type: "object",
+                properties: {
+                    singleValue: {
+                        type: "boolean"
+                    },
+                    objectsInArrays: {
+                        type: "boolean"
+                    },
+                    arraysInArrays: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedSpaceAfter: "There should be no space after '{{tokenValue}}'.",
+            unexpectedSpaceBefore: "There should be no space before '{{tokenValue}}'.",
+            missingSpaceAfter: "A space is required after '{{tokenValue}}'.",
+            missingSpaceBefore: "A space is required before '{{tokenValue}}'."
+        }
+    },
+    create(context) {
+        const spaced = context.options[0] === "always",
+            sourceCode = context.getSourceCode();
+
+        /**
+         * Determines whether an option is set, relative to the spacing option.
+         * If spaced is "always", then check whether option is set to false.
+         * If spaced is "never", then check whether option is set to true.
+         * @param {Object} option - The option to exclude.
+         * @returns {boolean} Whether or not the property is excluded.
+         */
+        function isOptionSet(option) {
+            return context.options[1] ? context.options[1][option] === !spaced : false;
+        }
+
+        const options = {
+            spaced,
+            singleElementException: isOptionSet("singleValue"),
+            objectsInArraysException: isOptionSet("objectsInArrays"),
+            arraysInArraysException: isOptionSet("arraysInArrays")
+        };
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Reports that there shouldn't be a space after the first token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoBeginningSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                messageId: "unexpectedSpaceAfter",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    const nextToken = sourceCode.getTokenAfter(token);
+
+                    return fixer.removeRange([token.range[1], nextToken.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there shouldn't be a space before the last token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoEndingSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                messageId: "unexpectedSpaceBefore",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    const previousToken = sourceCode.getTokenBefore(token);
+
+                    return fixer.removeRange([previousToken.range[1], token.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a space after the first token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredBeginningSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                messageId: "missingSpaceAfter",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextAfter(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a space before the last token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredEndingSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                messageId: "missingSpaceBefore",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextBefore(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Determines if a node is an object type
+         * @param {ASTNode} node - The node to check.
+         * @returns {boolean} Whether or not the node is an object type.
+         */
+        function isObjectType(node) {
+            return node && (node.type === "ObjectExpression" || node.type === "ObjectPattern");
+        }
+
+        /**
+         * Determines if a node is an array type
+         * @param {ASTNode} node - The node to check.
+         * @returns {boolean} Whether or not the node is an array type.
+         */
+        function isArrayType(node) {
+            return node && (node.type === "ArrayExpression" || node.type === "ArrayPattern");
+        }
+
+        /**
+         * Validates the spacing around array brackets
+         * @param {ASTNode} node - The node we're checking for spacing
+         * @returns {void}
+         */
+        function validateArraySpacing(node) {
+            if (options.spaced && node.elements.length === 0) {
+                return;
+            }
+
+            const first = sourceCode.getFirstToken(node),
+                second = sourceCode.getFirstToken(node, 1),
+                last = node.typeAnnotation
+                    ? sourceCode.getTokenBefore(node.typeAnnotation)
+                    : sourceCode.getLastToken(node),
+                penultimate = sourceCode.getTokenBefore(last),
+                firstElement = node.elements[0],
+                lastElement = node.elements[node.elements.length - 1];
+
+            const openingBracketMustBeSpaced =
+                options.objectsInArraysException && isObjectType(firstElement) ||
+                options.arraysInArraysException && isArrayType(firstElement) ||
+                options.singleElementException && node.elements.length === 1
+                    ? !options.spaced : options.spaced;
+
+            const closingBracketMustBeSpaced =
+                options.objectsInArraysException && isObjectType(lastElement) ||
+                options.arraysInArraysException && isArrayType(lastElement) ||
+                options.singleElementException && node.elements.length === 1
+                    ? !options.spaced : options.spaced;
+
+            if (astUtils.isTokenOnSameLine(first, second)) {
+                if (openingBracketMustBeSpaced && !sourceCode.isSpaceBetweenTokens(first, second)) {
+                    reportRequiredBeginningSpace(node, first);
+                }
+                if (!openingBracketMustBeSpaced && sourceCode.isSpaceBetweenTokens(first, second)) {
+                    reportNoBeginningSpace(node, first);
+                }
+            }
+
+            if (first !== penultimate && astUtils.isTokenOnSameLine(penultimate, last)) {
+                if (closingBracketMustBeSpaced && !sourceCode.isSpaceBetweenTokens(penultimate, last)) {
+                    reportRequiredEndingSpace(node, last);
+                }
+                if (!closingBracketMustBeSpaced && sourceCode.isSpaceBetweenTokens(penultimate, last)) {
+                    reportNoEndingSpace(node, last);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ArrayPattern: validateArraySpacing,
+            ArrayExpression: validateArraySpacing
+        };
+    }
+};

node_modules/eslint/lib/rules/array-callback-return.js

@@ -0,0 +1,257 @@
+/**
+ * @fileoverview Rule to enforce return statements in callbacks of array's methods
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const TARGET_NODE_TYPE = /^(?:Arrow)?FunctionExpression$/;
+const TARGET_METHODS = /^(?:every|filter|find(?:Index)?|map|reduce(?:Right)?|some|sort)$/;
+
+/**
+ * Checks a given code path segment is reachable.
+ *
+ * @param {CodePathSegment} segment - A segment to check.
+ * @returns {boolean} `true` if the segment is reachable.
+ */
+function isReachable(segment) {
+    return segment.reachable;
+}
+
+/**
+ * Gets a readable location.
+ *
+ * - FunctionExpression -> the function name or `function` keyword.
+ * - ArrowFunctionExpression -> `=>` token.
+ *
+ * @param {ASTNode} node - A function node to get.
+ * @param {SourceCode} sourceCode - A source code to get tokens.
+ * @returns {ASTNode|Token} The node or the token of a location.
+ */
+function getLocation(node, sourceCode) {
+    if (node.type === "ArrowFunctionExpression") {
+        return sourceCode.getTokenBefore(node.body);
+    }
+    return node.id || node;
+}
+
+/**
+ * Checks a given node is a MemberExpression node which has the specified name's
+ * property.
+ *
+ * @param {ASTNode} node - A node to check.
+ * @returns {boolean} `true` if the node is a MemberExpression node which has
+ *      the specified name's property
+ */
+function isTargetMethod(node) {
+    return (
+        node.type === "MemberExpression" &&
+        TARGET_METHODS.test(astUtils.getStaticPropertyName(node) || "")
+    );
+}
+
+/**
+ * Checks whether or not a given node is a function expression which is the
+ * callback of an array method.
+ *
+ * @param {ASTNode} node - A node to check. This is one of
+ *      FunctionExpression or ArrowFunctionExpression.
+ * @returns {boolean} `true` if the node is the callback of an array method.
+ */
+function isCallbackOfArrayMethod(node) {
+    let currentNode = node;
+
+    while (currentNode) {
+        const parent = currentNode.parent;
+
+        switch (parent.type) {
+
+            /*
+             * Looks up the destination. e.g.,
+             * foo.every(nativeFoo || function foo() { ... });
+             */
+            case "LogicalExpression":
+            case "ConditionalExpression":
+                currentNode = parent;
+                break;
+
+            /*
+             * If the upper function is IIFE, checks the destination of the return value.
+             * e.g.
+             *   foo.every((function() {
+             *     // setup...
+             *     return function callback() { ... };
+             *   })());
+             */
+            case "ReturnStatement": {
+                const func = astUtils.getUpperFunction(parent);
+
+                if (func === null || !astUtils.isCallee(func)) {
+                    return false;
+                }
+                currentNode = func.parent;
+                break;
+            }
+
+            /*
+             * e.g.
+             *   Array.from([], function() {});
+             *   list.every(function() {});
+             */
+            case "CallExpression":
+                if (astUtils.isArrayFromMethod(parent.callee)) {
+                    return (
+                        parent.arguments.length >= 2 &&
+                        parent.arguments[1] === currentNode
+                    );
+                }
+                if (isTargetMethod(parent.callee)) {
+                    return (
+                        parent.arguments.length >= 1 &&
+                        parent.arguments[0] === currentNode
+                    );
+                }
+                return false;
+
+            // Otherwise this node is not target.
+            default:
+                return false;
+        }
+    }
+
+    /* istanbul ignore next: unreachable */
+    return false;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "enforce `return` statements in callbacks of array methods",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/array-callback-return"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowImplicit: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            expectedAtEnd: "Expected to return a value at the end of {{name}}.",
+            expectedInside: "Expected to return a value in {{name}}.",
+            expectedReturnValue: "{{name}} expected a return value."
+        }
+    },
+
+    create(context) {
+
+        const options = context.options[0] || { allowImplicit: false };
+
+        let funcInfo = {
+            upper: null,
+            codePath: null,
+            hasReturn: false,
+            shouldCheck: false,
+            node: null
+        };
+
+        /**
+         * Checks whether or not the last code path segment is reachable.
+         * Then reports this function if the segment is reachable.
+         *
+         * If the last code path segment is reachable, there are paths which are not
+         * returned or thrown.
+         *
+         * @param {ASTNode} node - A node to check.
+         * @returns {void}
+         */
+        function checkLastSegment(node) {
+            if (funcInfo.shouldCheck &&
+                funcInfo.codePath.currentSegments.some(isReachable)
+            ) {
+                context.report({
+                    node,
+                    loc: getLocation(node, context.getSourceCode()).loc.start,
+                    messageId: funcInfo.hasReturn
+                        ? "expectedAtEnd"
+                        : "expectedInside",
+                    data: {
+                        name: astUtils.getFunctionNameWithKind(funcInfo.node)
+                    }
+                });
+            }
+        }
+
+        return {
+
+            // Stacks this function's information.
+            onCodePathStart(codePath, node) {
+                funcInfo = {
+                    upper: funcInfo,
+                    codePath,
+                    hasReturn: false,
+                    shouldCheck:
+                        TARGET_NODE_TYPE.test(node.type) &&
+                        node.body.type === "BlockStatement" &&
+                        isCallbackOfArrayMethod(node) &&
+                        !node.async &&
+                        !node.generator,
+                    node
+                };
+            },
+
+            // Pops this function's information.
+            onCodePathEnd() {
+                funcInfo = funcInfo.upper;
+            },
+
+            // Checks the return statement is valid.
+            ReturnStatement(node) {
+                if (funcInfo.shouldCheck) {
+                    funcInfo.hasReturn = true;
+
+                    // if allowImplicit: false, should also check node.argument
+                    if (!options.allowImplicit && !node.argument) {
+                        context.report({
+                            node,
+                            messageId: "expectedReturnValue",
+                            data: {
+                                name: lodash.upperFirst(astUtils.getFunctionNameWithKind(funcInfo.node))
+                            }
+                        });
+                    }
+                }
+            },
+
+            // Reports a given function if the last path is reachable.
+            "FunctionExpression:exit": checkLastSegment,
+            "ArrowFunctionExpression:exit": checkLastSegment
+        };
+    }
+};

node_modules/eslint/lib/rules/array-element-newline.js

@@ -0,0 +1,263 @@
+/**
+ * @fileoverview Rule to enforce line breaks after each array element
+ * @author Jan Peer Stöcklmair <https://github.com/JPeer264>
+ */
+
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce line breaks after each array element",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/array-element-newline"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["always", "never", "consistent"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            multiline: {
+                                type: "boolean"
+                            },
+                            minItems: {
+                                type: ["integer", "null"],
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            unexpectedLineBreak: "There should be no linebreak here.",
+            missingLineBreak: "There should be a linebreak after this element."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Normalizes a given option value.
+         *
+         * @param {string|Object|undefined} providedOption - An option value to parse.
+         * @returns {{multiline: boolean, minItems: number}} Normalized option object.
+         */
+        function normalizeOptionValue(providedOption) {
+            let consistent = false;
+            let multiline = false;
+            let minItems;
+
+            const option = providedOption || "always";
+
+            if (!option || option === "always" || option.minItems === 0) {
+                minItems = 0;
+            } else if (option === "never") {
+                minItems = Number.POSITIVE_INFINITY;
+            } else if (option === "consistent") {
+                consistent = true;
+                minItems = Number.POSITIVE_INFINITY;
+            } else {
+                multiline = Boolean(option.multiline);
+                minItems = option.minItems || Number.POSITIVE_INFINITY;
+            }
+
+            return { consistent, multiline, minItems };
+        }
+
+        /**
+         * Normalizes a given option value.
+         *
+         * @param {string|Object|undefined} options - An option value to parse.
+         * @returns {{ArrayExpression: {multiline: boolean, minItems: number}, ArrayPattern: {multiline: boolean, minItems: number}}} Normalized option object.
+         */
+        function normalizeOptions(options) {
+            const value = normalizeOptionValue(options);
+
+            return { ArrayExpression: value, ArrayPattern: value };
+        }
+
+        /**
+         * Reports that there shouldn't be a line break after the first token
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoLineBreak(token) {
+            const tokenBefore = sourceCode.getTokenBefore(token, { includeComments: true });
+
+            context.report({
+                loc: {
+                    start: tokenBefore.loc.end,
+                    end: token.loc.start
+                },
+                messageId: "unexpectedLineBreak",
+                fix(fixer) {
+                    if (astUtils.isCommentToken(tokenBefore)) {
+                        return null;
+                    }
+
+                    if (!astUtils.isTokenOnSameLine(tokenBefore, token)) {
+                        return fixer.replaceTextRange([tokenBefore.range[1], token.range[0]], " ");
+                    }
+
+                    /*
+                     * This will check if the comma is on the same line as the next element
+                     * Following array:
+                     * [
+                     *     1
+                     *     , 2
+                     *     , 3
+                     * ]
+                     *
+                     * will be fixed to:
+                     * [
+                     *     1, 2, 3
+                     * ]
+                     */
+                    const twoTokensBefore = sourceCode.getTokenBefore(tokenBefore, { includeComments: true });
+
+                    if (astUtils.isCommentToken(twoTokensBefore)) {
+                        return null;
+                    }
+
+                    return fixer.replaceTextRange([twoTokensBefore.range[1], tokenBefore.range[0]], "");
+
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a line break after the first token
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredLineBreak(token) {
+            const tokenBefore = sourceCode.getTokenBefore(token, { includeComments: true });
+
+            context.report({
+                loc: {
+                    start: tokenBefore.loc.end,
+                    end: token.loc.start
+                },
+                messageId: "missingLineBreak",
+                fix(fixer) {
+                    return fixer.replaceTextRange([tokenBefore.range[1], token.range[0]], "\n");
+                }
+            });
+        }
+
+        /**
+         * Reports a given node if it violated this rule.
+         *
+         * @param {ASTNode} node - A node to check. This is an ObjectExpression node or an ObjectPattern node.
+         * @param {{multiline: boolean, minItems: number}} options - An option object.
+         * @returns {void}
+         */
+        function check(node) {
+            const elements = node.elements;
+            const normalizedOptions = normalizeOptions(context.options[0]);
+            const options = normalizedOptions[node.type];
+
+            let elementBreak = false;
+
+            /*
+             * MULTILINE: true
+             * loop through every element and check
+             * if at least one element has linebreaks inside
+             * this ensures that following is not valid (due to elements are on the same line):
+             *
+             * [
+             *      1,
+             *      2,
+             *      3
+             * ]
+             */
+            if (options.multiline) {
+                elementBreak = elements
+                    .filter(element => element !== null)
+                    .some(element => element.loc.start.line !== element.loc.end.line);
+            }
+
+            const linebreaksCount = node.elements.map((element, i) => {
+                const previousElement = elements[i - 1];
+
+                if (i === 0 || element === null || previousElement === null) {
+                    return false;
+                }
+
+                const commaToken = sourceCode.getFirstTokenBetween(previousElement, element, astUtils.isCommaToken);
+                const lastTokenOfPreviousElement = sourceCode.getTokenBefore(commaToken);
+                const firstTokenOfCurrentElement = sourceCode.getTokenAfter(commaToken);
+
+                return !astUtils.isTokenOnSameLine(lastTokenOfPreviousElement, firstTokenOfCurrentElement);
+            }).filter(isBreak => isBreak === true).length;
+
+            const needsLinebreaks = (
+                elements.length >= options.minItems ||
+                (
+                    options.multiline &&
+                    elementBreak
+                ) ||
+                (
+                    options.consistent &&
+                    linebreaksCount > 0 &&
+                    linebreaksCount < node.elements.length
+                )
+            );
+
+            elements.forEach((element, i) => {
+                const previousElement = elements[i - 1];
+
+                if (i === 0 || element === null || previousElement === null) {
+                    return;
+                }
+
+                const commaToken = sourceCode.getFirstTokenBetween(previousElement, element, astUtils.isCommaToken);
+                const lastTokenOfPreviousElement = sourceCode.getTokenBefore(commaToken);
+                const firstTokenOfCurrentElement = sourceCode.getTokenAfter(commaToken);
+
+                if (needsLinebreaks) {
+                    if (astUtils.isTokenOnSameLine(lastTokenOfPreviousElement, firstTokenOfCurrentElement)) {
+                        reportRequiredLineBreak(firstTokenOfCurrentElement);
+                    }
+                } else {
+                    if (!astUtils.isTokenOnSameLine(lastTokenOfPreviousElement, firstTokenOfCurrentElement)) {
+                        reportNoLineBreak(firstTokenOfCurrentElement);
+                    }
+                }
+            });
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            ArrayPattern: check,
+            ArrayExpression: check
+        };
+    }
+};

node_modules/eslint/lib/rules/arrow-body-style.js

@@ -0,0 +1,240 @@
+/**
+ * @fileoverview Rule to require braces in arrow function body.
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require braces around arrow function bodies",
+            category: "ECMAScript 6",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/arrow-body-style"
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always", "never"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["as-needed"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                requireReturnForObjectLiteral: { type: "boolean" }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        fixable: "code",
+
+        messages: {
+            unexpectedOtherBlock: "Unexpected block statement surrounding arrow body.",
+            unexpectedEmptyBlock: "Unexpected block statement surrounding arrow body; put a value of `undefined` immediately after the `=>`.",
+            unexpectedObjectBlock: "Unexpected block statement surrounding arrow body; parenthesize the returned value and move it immediately after the `=>`.",
+            unexpectedSingleBlock: "Unexpected block statement surrounding arrow body; move the returned value immediately after the `=>`.",
+            expectedBlock: "Expected block statement surrounding arrow body."
+        }
+    },
+
+    create(context) {
+        const options = context.options;
+        const always = options[0] === "always";
+        const asNeeded = !options[0] || options[0] === "as-needed";
+        const never = options[0] === "never";
+        const requireReturnForObjectLiteral = options[1] && options[1].requireReturnForObjectLiteral;
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Checks whether the given node has ASI problem or not.
+         * @param {Token} token The token to check.
+         * @returns {boolean} `true` if it changes semantics if `;` or `}` followed by the token are removed.
+         */
+        function hasASIProblem(token) {
+            return token && token.type === "Punctuator" && /^[([/`+-]/.test(token.value);
+        }
+
+        /**
+         * Gets the closing parenthesis which is the pair of the given opening parenthesis.
+         * @param {Token} token The opening parenthesis token to get.
+         * @returns {Token} The found closing parenthesis token.
+         */
+        function findClosingParen(token) {
+            let node = sourceCode.getNodeByRangeIndex(token.range[1]);
+
+            while (!astUtils.isParenthesised(sourceCode, node)) {
+                node = node.parent;
+            }
+            return sourceCode.getTokenAfter(node);
+        }
+
+        /**
+         * Determines whether a arrow function body needs braces
+         * @param {ASTNode} node The arrow function node.
+         * @returns {void}
+         */
+        function validate(node) {
+            const arrowBody = node.body;
+
+            if (arrowBody.type === "BlockStatement") {
+                const blockBody = arrowBody.body;
+
+                if (blockBody.length !== 1 && !never) {
+                    return;
+                }
+
+                if (asNeeded && requireReturnForObjectLiteral && blockBody[0].type === "ReturnStatement" &&
+                    blockBody[0].argument && blockBody[0].argument.type === "ObjectExpression") {
+                    return;
+                }
+
+                if (never || asNeeded && blockBody[0].type === "ReturnStatement") {
+                    let messageId;
+
+                    if (blockBody.length === 0) {
+                        messageId = "unexpectedEmptyBlock";
+                    } else if (blockBody.length > 1) {
+                        messageId = "unexpectedOtherBlock";
+                    } else if (blockBody[0].argument === null) {
+                        messageId = "unexpectedSingleBlock";
+                    } else if (astUtils.isOpeningBraceToken(sourceCode.getFirstToken(blockBody[0], { skip: 1 }))) {
+                        messageId = "unexpectedObjectBlock";
+                    } else {
+                        messageId = "unexpectedSingleBlock";
+                    }
+
+                    context.report({
+                        node,
+                        loc: arrowBody.loc.start,
+                        messageId,
+                        fix(fixer) {
+                            const fixes = [];
+
+                            if (blockBody.length !== 1 ||
+                                blockBody[0].type !== "ReturnStatement" ||
+                                !blockBody[0].argument ||
+                                hasASIProblem(sourceCode.getTokenAfter(arrowBody))
+                            ) {
+                                return fixes;
+                            }
+
+                            const openingBrace = sourceCode.getFirstToken(arrowBody);
+                            const closingBrace = sourceCode.getLastToken(arrowBody);
+                            const firstValueToken = sourceCode.getFirstToken(blockBody[0], 1);
+                            const lastValueToken = sourceCode.getLastToken(blockBody[0]);
+                            const commentsExist =
+                                sourceCode.commentsExistBetween(openingBrace, firstValueToken) ||
+                                sourceCode.commentsExistBetween(lastValueToken, closingBrace);
+
+                            /*
+                             * Remove tokens around the return value.
+                             * If comments don't exist, remove extra spaces as well.
+                             */
+                            if (commentsExist) {
+                                fixes.push(
+                                    fixer.remove(openingBrace),
+                                    fixer.remove(closingBrace),
+                                    fixer.remove(sourceCode.getTokenAfter(openingBrace)) // return keyword
+                                );
+                            } else {
+                                fixes.push(
+                                    fixer.removeRange([openingBrace.range[0], firstValueToken.range[0]]),
+                                    fixer.removeRange([lastValueToken.range[1], closingBrace.range[1]])
+                                );
+                            }
+
+                            /*
+                             * If the first token of the reutrn value is `{`,
+                             * enclose the return value by parentheses to avoid syntax error.
+                             */
+                            if (astUtils.isOpeningBraceToken(firstValueToken)) {
+                                fixes.push(
+                                    fixer.insertTextBefore(firstValueToken, "("),
+                                    fixer.insertTextAfter(lastValueToken, ")")
+                                );
+                            }
+
+                            /*
+                             * If the last token of the return statement is semicolon, remove it.
+                             * Non-block arrow body is an expression, not a statement.
+                             */
+                            if (astUtils.isSemicolonToken(lastValueToken)) {
+                                fixes.push(fixer.remove(lastValueToken));
+                            }
+
+                            return fixes;
+                        }
+                    });
+                }
+            } else {
+                if (always || (asNeeded && requireReturnForObjectLiteral && arrowBody.type === "ObjectExpression")) {
+                    context.report({
+                        node,
+                        loc: arrowBody.loc.start,
+                        messageId: "expectedBlock",
+                        fix(fixer) {
+                            const fixes = [];
+                            const arrowToken = sourceCode.getTokenBefore(arrowBody, astUtils.isArrowToken);
+                            const firstBodyToken = sourceCode.getTokenAfter(arrowToken);
+                            const lastBodyToken = sourceCode.getLastToken(node);
+                            const isParenthesisedObjectLiteral =
+                                astUtils.isOpeningParenToken(firstBodyToken) &&
+                                astUtils.isOpeningBraceToken(sourceCode.getTokenAfter(firstBodyToken));
+
+                            // Wrap the value by a block and a return statement.
+                            fixes.push(
+                                fixer.insertTextBefore(firstBodyToken, "{return "),
+                                fixer.insertTextAfter(lastBodyToken, "}")
+                            );
+
+                            // If the value is object literal, remove parentheses which were forced by syntax.
+                            if (isParenthesisedObjectLiteral) {
+                                fixes.push(
+                                    fixer.remove(firstBodyToken),
+                                    fixer.remove(findClosingParen(firstBodyToken))
+                                );
+                            }
+
+                            return fixes;
+                        }
+                    });
+                }
+            }
+        }
+
+        return {
+            "ArrowFunctionExpression:exit": validate
+        };
+    }
+};

node_modules/eslint/lib/rules/arrow-parens.js

@@ -0,0 +1,163 @@
+/**
+ * @fileoverview Rule to require parens in arrow function arguments.
+ * @author Jxck
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "require parentheses around arrow function arguments",
+            category: "ECMAScript 6",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/arrow-parens"
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+                enum: ["always", "as-needed"]
+            },
+            {
+                type: "object",
+                properties: {
+                    requireForBlockBody: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedParens: "Unexpected parentheses around single function argument.",
+            expectedParens: "Expected parentheses around arrow function argument.",
+
+            unexpectedParensInline: "Unexpected parentheses around single function argument having a body with no curly braces.",
+            expectedParensBlock: "Expected parentheses around arrow function argument having a body with curly braces."
+        }
+    },
+
+    create(context) {
+        const asNeeded = context.options[0] === "as-needed";
+        const requireForBlockBody = asNeeded && context.options[1] && context.options[1].requireForBlockBody === true;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Determines whether a arrow function argument end with `)`
+         * @param {ASTNode} node The arrow function node.
+         * @returns {void}
+         */
+        function parens(node) {
+            const isAsync = node.async;
+            const firstTokenOfParam = sourceCode.getFirstToken(node, isAsync ? 1 : 0);
+
+            /**
+             * Remove the parenthesis around a parameter
+             * @param {Fixer} fixer Fixer
+             * @returns {string} fixed parameter
+             */
+            function fixParamsWithParenthesis(fixer) {
+                const paramToken = sourceCode.getTokenAfter(firstTokenOfParam);
+
+                /*
+                 * ES8 allows Trailing commas in function parameter lists and calls
+                 * https://github.com/eslint/eslint/issues/8834
+                 */
+                const closingParenToken = sourceCode.getTokenAfter(paramToken, astUtils.isClosingParenToken);
+                const asyncToken = isAsync ? sourceCode.getTokenBefore(firstTokenOfParam) : null;
+                const shouldAddSpaceForAsync = asyncToken && (asyncToken.range[1] === firstTokenOfParam.range[0]);
+
+                return fixer.replaceTextRange([
+                    firstTokenOfParam.range[0],
+                    closingParenToken.range[1]
+                ], `${shouldAddSpaceForAsync ? " " : ""}${paramToken.value}`);
+            }
+
+            // "as-needed", { "requireForBlockBody": true }: x => x
+            if (
+                requireForBlockBody &&
+                node.params.length === 1 &&
+                node.params[0].type === "Identifier" &&
+                !node.params[0].typeAnnotation &&
+                node.body.type !== "BlockStatement" &&
+                !node.returnType
+            ) {
+                if (astUtils.isOpeningParenToken(firstTokenOfParam)) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedParensInline",
+                        fix: fixParamsWithParenthesis
+                    });
+                }
+                return;
+            }
+
+            if (
+                requireForBlockBody &&
+                node.body.type === "BlockStatement"
+            ) {
+                if (!astUtils.isOpeningParenToken(firstTokenOfParam)) {
+                    context.report({
+                        node,
+                        messageId: "expectedParensBlock",
+                        fix(fixer) {
+                            return fixer.replaceText(firstTokenOfParam, `(${firstTokenOfParam.value})`);
+                        }
+                    });
+                }
+                return;
+            }
+
+            // "as-needed": x => x
+            if (asNeeded &&
+                node.params.length === 1 &&
+                node.params[0].type === "Identifier" &&
+                !node.params[0].typeAnnotation &&
+                !node.returnType
+            ) {
+                if (astUtils.isOpeningParenToken(firstTokenOfParam)) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedParens",
+                        fix: fixParamsWithParenthesis
+                    });
+                }
+                return;
+            }
+
+            if (firstTokenOfParam.type === "Identifier") {
+                const after = sourceCode.getTokenAfter(firstTokenOfParam);
+
+                // (x) => x
+                if (after.value !== ")") {
+                    context.report({
+                        node,
+                        messageId: "expectedParens",
+                        fix(fixer) {
+                            return fixer.replaceText(firstTokenOfParam, `(${firstTokenOfParam.value})`);
+                        }
+                    });
+                }
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: parens
+        };
+    }
+};

node_modules/eslint/lib/rules/arrow-spacing.js

@@ -0,0 +1,160 @@
+/**
+ * @fileoverview Rule to define spacing before/after arrow function's arrow.
+ * @author Jxck
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent spacing before and after the arrow in arrow functions",
+            category: "ECMAScript 6",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/arrow-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: {
+                        type: "boolean"
+                    },
+                    after: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            expectedBefore: "Missing space before =>.",
+            unexpectedBefore: "Unexpected space before =>.",
+
+            expectedAfter: "Missing space after =>.",
+            unexpectedAfter: "Unexpected space after =>."
+        }
+    },
+
+    create(context) {
+
+        // merge rules with default
+        const rule = { before: true, after: true },
+            option = context.options[0] || {};
+
+        rule.before = option.before !== false;
+        rule.after = option.after !== false;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Get tokens of arrow(`=>`) and before/after arrow.
+         * @param {ASTNode} node The arrow function node.
+         * @returns {Object} Tokens of arrow and before/after arrow.
+         */
+        function getTokens(node) {
+            const arrow = sourceCode.getTokenBefore(node.body, astUtils.isArrowToken);
+
+            return {
+                before: sourceCode.getTokenBefore(arrow),
+                arrow,
+                after: sourceCode.getTokenAfter(arrow)
+            };
+        }
+
+        /**
+         * Count spaces before/after arrow(`=>`) token.
+         * @param {Object} tokens Tokens before/after arrow.
+         * @returns {Object} count of space before/after arrow.
+         */
+        function countSpaces(tokens) {
+            const before = tokens.arrow.range[0] - tokens.before.range[1];
+            const after = tokens.after.range[0] - tokens.arrow.range[1];
+
+            return { before, after };
+        }
+
+        /**
+         * Determines whether space(s) before after arrow(`=>`) is satisfy rule.
+         * if before/after value is `true`, there should be space(s).
+         * if before/after value is `false`, there should be no space.
+         * @param {ASTNode} node The arrow function node.
+         * @returns {void}
+         */
+        function spaces(node) {
+            const tokens = getTokens(node);
+            const countSpace = countSpaces(tokens);
+
+            if (rule.before) {
+
+                // should be space(s) before arrow
+                if (countSpace.before === 0) {
+                    context.report({
+                        node: tokens.before,
+                        messageId: "expectedBefore",
+                        fix(fixer) {
+                            return fixer.insertTextBefore(tokens.arrow, " ");
+                        }
+                    });
+                }
+            } else {
+
+                // should be no space before arrow
+                if (countSpace.before > 0) {
+                    context.report({
+                        node: tokens.before,
+                        messageId: "unexpectedBefore",
+                        fix(fixer) {
+                            return fixer.removeRange([tokens.before.range[1], tokens.arrow.range[0]]);
+                        }
+                    });
+                }
+            }
+
+            if (rule.after) {
+
+                // should be space(s) after arrow
+                if (countSpace.after === 0) {
+                    context.report({
+                        node: tokens.after,
+                        messageId: "expectedAfter",
+                        fix(fixer) {
+                            return fixer.insertTextAfter(tokens.arrow, " ");
+                        }
+                    });
+                }
+            } else {
+
+                // should be no space after arrow
+                if (countSpace.after > 0) {
+                    context.report({
+                        node: tokens.after,
+                        messageId: "unexpectedAfter",
+                        fix(fixer) {
+                            return fixer.removeRange([tokens.arrow.range[1], tokens.after.range[0]]);
+                        }
+                    });
+                }
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: spaces
+        };
+    }
+};

node_modules/eslint/lib/rules/block-scoped-var.js

@@ -0,0 +1,122 @@
+/**
+ * @fileoverview Rule to check for "block scoped" variables by binding context
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce the use of variables within the scope they are defined",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/block-scoped-var"
+        },
+
+        schema: [],
+
+        messages: {
+            outOfScope: "'{{name}}' used outside of binding context."
+        }
+    },
+
+    create(context) {
+        let stack = [];
+
+        /**
+         * Makes a block scope.
+         * @param {ASTNode} node - A node of a scope.
+         * @returns {void}
+         */
+        function enterScope(node) {
+            stack.push(node.range);
+        }
+
+        /**
+         * Pops the last block scope.
+         * @returns {void}
+         */
+        function exitScope() {
+            stack.pop();
+        }
+
+        /**
+         * Reports a given reference.
+         * @param {eslint-scope.Reference} reference - A reference to report.
+         * @returns {void}
+         */
+        function report(reference) {
+            const identifier = reference.identifier;
+
+            context.report({ node: identifier, messageId: "outOfScope", data: { name: identifier.name } });
+        }
+
+        /**
+         * Finds and reports references which are outside of valid scopes.
+         * @param {ASTNode} node - A node to get variables.
+         * @returns {void}
+         */
+        function checkForVariables(node) {
+            if (node.kind !== "var") {
+                return;
+            }
+
+            // Defines a predicate to check whether or not a given reference is outside of valid scope.
+            const scopeRange = stack[stack.length - 1];
+
+            /**
+             * Check if a reference is out of scope
+             * @param {ASTNode} reference node to examine
+             * @returns {boolean} True is its outside the scope
+             * @private
+             */
+            function isOutsideOfScope(reference) {
+                const idRange = reference.identifier.range;
+
+                return idRange[0] < scopeRange[0] || idRange[1] > scopeRange[1];
+            }
+
+            // Gets declared variables, and checks its references.
+            const variables = context.getDeclaredVariables(node);
+
+            for (let i = 0; i < variables.length; ++i) {
+
+                // Reports.
+                variables[i]
+                    .references
+                    .filter(isOutsideOfScope)
+                    .forEach(report);
+            }
+        }
+
+        return {
+            Program(node) {
+                stack = [node.range];
+            },
+
+            // Manages scopes.
+            BlockStatement: enterScope,
+            "BlockStatement:exit": exitScope,
+            ForStatement: enterScope,
+            "ForStatement:exit": exitScope,
+            ForInStatement: enterScope,
+            "ForInStatement:exit": exitScope,
+            ForOfStatement: enterScope,
+            "ForOfStatement:exit": exitScope,
+            SwitchStatement: enterScope,
+            "SwitchStatement:exit": exitScope,
+            CatchClause: enterScope,
+            "CatchClause:exit": exitScope,
+
+            // Finds and reports references which are outside of valid scope.
+            VariableDeclaration: checkForVariables
+        };
+
+    }
+};

node_modules/eslint/lib/rules/block-spacing.js

@@ -0,0 +1,147 @@
+/**
+ * @fileoverview A rule to disallow or enforce spaces inside of single line blocks.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const util = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "disallow or enforce spaces inside of blocks after opening block and before closing block",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/block-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            { enum: ["always", "never"] }
+        ],
+
+        messages: {
+            missing: "Requires a space {{location}} '{{token}}'",
+            extra: "Unexpected space(s) {{location}} '{{token}}'"
+        }
+    },
+
+    create(context) {
+        const always = (context.options[0] !== "never"),
+            messageId = always ? "missing" : "extra",
+            sourceCode = context.getSourceCode();
+
+        /**
+         * Gets the open brace token from a given node.
+         * @param {ASTNode} node - A BlockStatement/SwitchStatement node to get.
+         * @returns {Token} The token of the open brace.
+         */
+        function getOpenBrace(node) {
+            if (node.type === "SwitchStatement") {
+                if (node.cases.length > 0) {
+                    return sourceCode.getTokenBefore(node.cases[0]);
+                }
+                return sourceCode.getLastToken(node, 1);
+            }
+            return sourceCode.getFirstToken(node);
+        }
+
+        /**
+         * Checks whether or not:
+         *   - given tokens are on same line.
+         *   - there is/isn't a space between given tokens.
+         * @param {Token} left - A token to check.
+         * @param {Token} right - The token which is next to `left`.
+         * @returns {boolean}
+         *    When the option is `"always"`, `true` if there are one or more spaces between given tokens.
+         *    When the option is `"never"`, `true` if there are not any spaces between given tokens.
+         *    If given tokens are not on same line, it's always `true`.
+         */
+        function isValid(left, right) {
+            return (
+                !util.isTokenOnSameLine(left, right) ||
+                sourceCode.isSpaceBetweenTokens(left, right) === always
+            );
+        }
+
+        /**
+         * Reports invalid spacing style inside braces.
+         * @param {ASTNode} node - A BlockStatement/SwitchStatement node to get.
+         * @returns {void}
+         */
+        function checkSpacingInsideBraces(node) {
+
+            // Gets braces and the first/last token of content.
+            const openBrace = getOpenBrace(node);
+            const closeBrace = sourceCode.getLastToken(node);
+            const firstToken = sourceCode.getTokenAfter(openBrace, { includeComments: true });
+            const lastToken = sourceCode.getTokenBefore(closeBrace, { includeComments: true });
+
+            // Skip if the node is invalid or empty.
+            if (openBrace.type !== "Punctuator" ||
+                openBrace.value !== "{" ||
+                closeBrace.type !== "Punctuator" ||
+                closeBrace.value !== "}" ||
+                firstToken === closeBrace
+            ) {
+                return;
+            }
+
+            // Skip line comments for option never
+            if (!always && firstToken.type === "Line") {
+                return;
+            }
+
+            // Check.
+            if (!isValid(openBrace, firstToken)) {
+                context.report({
+                    node,
+                    loc: openBrace.loc.start,
+                    messageId,
+                    data: {
+                        location: "after",
+                        token: openBrace.value
+                    },
+                    fix(fixer) {
+                        if (always) {
+                            return fixer.insertTextBefore(firstToken, " ");
+                        }
+
+                        return fixer.removeRange([openBrace.range[1], firstToken.range[0]]);
+                    }
+                });
+            }
+            if (!isValid(lastToken, closeBrace)) {
+                context.report({
+                    node,
+                    loc: closeBrace.loc.start,
+                    messageId,
+                    data: {
+                        location: "before",
+                        token: closeBrace.value
+                    },
+                    fix(fixer) {
+                        if (always) {
+                            return fixer.insertTextAfter(lastToken, " ");
+                        }
+
+                        return fixer.removeRange([lastToken.range[1], closeBrace.range[0]]);
+                    }
+                });
+            }
+        }
+
+        return {
+            BlockStatement: checkSpacingInsideBraces,
+            SwitchStatement: checkSpacingInsideBraces
+        };
+    }
+};

node_modules/eslint/lib/rules/brace-style.js

@@ -0,0 +1,187 @@
+/**
+ * @fileoverview Rule to flag block statements that do not use the one true brace style
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent brace style for blocks",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/brace-style"
+        },
+
+        schema: [
+            {
+                enum: ["1tbs", "stroustrup", "allman"]
+            },
+            {
+                type: "object",
+                properties: {
+                    allowSingleLine: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "whitespace",
+
+        messages: {
+            nextLineOpen: "Opening curly brace does not appear on the same line as controlling statement.",
+            sameLineOpen: "Opening curly brace appears on the same line as controlling statement.",
+            blockSameLine: "Statement inside of curly braces should be on next line.",
+            nextLineClose: "Closing curly brace does not appear on the same line as the subsequent block.",
+            singleLineClose: "Closing curly brace should be on the same line as opening curly brace or on the line after the previous block.",
+            sameLineClose: "Closing curly brace appears on the same line as the subsequent block."
+        }
+    },
+
+    create(context) {
+        const style = context.options[0] || "1tbs",
+            params = context.options[1] || {},
+            sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Fixes a place where a newline unexpectedly appears
+         * @param {Token} firstToken The token before the unexpected newline
+         * @param {Token} secondToken The token after the unexpected newline
+         * @returns {Function} A fixer function to remove the newlines between the tokens
+         */
+        function removeNewlineBetween(firstToken, secondToken) {
+            const textRange = [firstToken.range[1], secondToken.range[0]];
+            const textBetween = sourceCode.text.slice(textRange[0], textRange[1]);
+
+            // Don't do a fix if there is a comment between the tokens
+            if (textBetween.trim()) {
+                return null;
+            }
+            return fixer => fixer.replaceTextRange(textRange, " ");
+        }
+
+        /**
+         * Validates a pair of curly brackets based on the user's config
+         * @param {Token} openingCurly The opening curly bracket
+         * @param {Token} closingCurly The closing curly bracket
+         * @returns {void}
+         */
+        function validateCurlyPair(openingCurly, closingCurly) {
+            const tokenBeforeOpeningCurly = sourceCode.getTokenBefore(openingCurly);
+            const tokenAfterOpeningCurly = sourceCode.getTokenAfter(openingCurly);
+            const tokenBeforeClosingCurly = sourceCode.getTokenBefore(closingCurly);
+            const singleLineException = params.allowSingleLine && astUtils.isTokenOnSameLine(openingCurly, closingCurly);
+
+            if (style !== "allman" && !astUtils.isTokenOnSameLine(tokenBeforeOpeningCurly, openingCurly)) {
+                context.report({
+                    node: openingCurly,
+                    messageId: "nextLineOpen",
+                    fix: removeNewlineBetween(tokenBeforeOpeningCurly, openingCurly)
+                });
+            }
+
+            if (style === "allman" && astUtils.isTokenOnSameLine(tokenBeforeOpeningCurly, openingCurly) && !singleLineException) {
+                context.report({
+                    node: openingCurly,
+                    messageId: "sameLineOpen",
+                    fix: fixer => fixer.insertTextBefore(openingCurly, "\n")
+                });
+            }
+
+            if (astUtils.isTokenOnSameLine(openingCurly, tokenAfterOpeningCurly) && tokenAfterOpeningCurly !== closingCurly && !singleLineException) {
+                context.report({
+                    node: openingCurly,
+                    messageId: "blockSameLine",
+                    fix: fixer => fixer.insertTextAfter(openingCurly, "\n")
+                });
+            }
+
+            if (tokenBeforeClosingCurly !== openingCurly && !singleLineException && astUtils.isTokenOnSameLine(tokenBeforeClosingCurly, closingCurly)) {
+                context.report({
+                    node: closingCurly,
+                    messageId: "singleLineClose",
+                    fix: fixer => fixer.insertTextBefore(closingCurly, "\n")
+                });
+            }
+        }
+
+        /**
+         * Validates the location of a token that appears before a keyword (e.g. a newline before `else`)
+         * @param {Token} curlyToken The closing curly token. This is assumed to precede a keyword token (such as `else` or `finally`).
+         * @returns {void}
+         */
+        function validateCurlyBeforeKeyword(curlyToken) {
+            const keywordToken = sourceCode.getTokenAfter(curlyToken);
+
+            if (style === "1tbs" && !astUtils.isTokenOnSameLine(curlyToken, keywordToken)) {
+                context.report({
+                    node: curlyToken,
+                    messageId: "nextLineClose",
+                    fix: removeNewlineBetween(curlyToken, keywordToken)
+                });
+            }
+
+            if (style !== "1tbs" && astUtils.isTokenOnSameLine(curlyToken, keywordToken)) {
+                context.report({
+                    node: curlyToken,
+                    messageId: "sameLineClose",
+                    fix: fixer => fixer.insertTextAfter(curlyToken, "\n")
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            BlockStatement(node) {
+                if (!astUtils.STATEMENT_LIST_PARENTS.has(node.parent.type)) {
+                    validateCurlyPair(sourceCode.getFirstToken(node), sourceCode.getLastToken(node));
+                }
+            },
+            ClassBody(node) {
+                validateCurlyPair(sourceCode.getFirstToken(node), sourceCode.getLastToken(node));
+            },
+            SwitchStatement(node) {
+                const closingCurly = sourceCode.getLastToken(node);
+                const openingCurly = sourceCode.getTokenBefore(node.cases.length ? node.cases[0] : closingCurly);
+
+                validateCurlyPair(openingCurly, closingCurly);
+            },
+            IfStatement(node) {
+                if (node.consequent.type === "BlockStatement" && node.alternate) {
+
+                    // Handle the keyword after the `if` block (before `else`)
+                    validateCurlyBeforeKeyword(sourceCode.getLastToken(node.consequent));
+                }
+            },
+            TryStatement(node) {
+
+                // Handle the keyword after the `try` block (before `catch` or `finally`)
+                validateCurlyBeforeKeyword(sourceCode.getLastToken(node.block));
+
+                if (node.handler && node.finalizer) {
+
+                    // Handle the keyword after the `catch` block (before `finally`)
+                    validateCurlyBeforeKeyword(sourceCode.getLastToken(node.handler.body));
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/callback-return.js

@@ -0,0 +1,182 @@
+/**
+ * @fileoverview Enforce return after a callback.
+ * @author Jamund Ferguson
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require `return` statements after callbacks",
+            category: "Node.js and CommonJS",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/callback-return"
+        },
+
+        schema: [{
+            type: "array",
+            items: { type: "string" }
+        }],
+
+        messages: {
+            missingReturn: "Expected return with your callback function."
+        }
+    },
+
+    create(context) {
+
+        const callbacks = context.options[0] || ["callback", "cb", "next"],
+            sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Find the closest parent matching a list of types.
+         * @param {ASTNode} node The node whose parents we are searching
+         * @param {Array} types The node types to match
+         * @returns {ASTNode} The matched node or undefined.
+         */
+        function findClosestParentOfType(node, types) {
+            if (!node.parent) {
+                return null;
+            }
+            if (types.indexOf(node.parent.type) === -1) {
+                return findClosestParentOfType(node.parent, types);
+            }
+            return node.parent;
+        }
+
+        /**
+         * Check to see if a node contains only identifers
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} Whether or not the node contains only identifers
+         */
+        function containsOnlyIdentifiers(node) {
+            if (node.type === "Identifier") {
+                return true;
+            }
+
+            if (node.type === "MemberExpression") {
+                if (node.object.type === "Identifier") {
+                    return true;
+                }
+                if (node.object.type === "MemberExpression") {
+                    return containsOnlyIdentifiers(node.object);
+                }
+            }
+
+            return false;
+        }
+
+        /**
+         * Check to see if a CallExpression is in our callback list.
+         * @param {ASTNode} node The node to check against our callback names list.
+         * @returns {boolean} Whether or not this function matches our callback name.
+         */
+        function isCallback(node) {
+            return containsOnlyIdentifiers(node.callee) && callbacks.indexOf(sourceCode.getText(node.callee)) > -1;
+        }
+
+        /**
+         * Determines whether or not the callback is part of a callback expression.
+         * @param {ASTNode} node The callback node
+         * @param {ASTNode} parentNode The expression node
+         * @returns {boolean} Whether or not this is part of a callback expression
+         */
+        function isCallbackExpression(node, parentNode) {
+
+            // ensure the parent node exists and is an expression
+            if (!parentNode || parentNode.type !== "ExpressionStatement") {
+                return false;
+            }
+
+            // cb()
+            if (parentNode.expression === node) {
+                return true;
+            }
+
+            // special case for cb && cb() and similar
+            if (parentNode.expression.type === "BinaryExpression" || parentNode.expression.type === "LogicalExpression") {
+                if (parentNode.expression.right === node) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            CallExpression(node) {
+
+                // if we're not a callback we can return
+                if (!isCallback(node)) {
+                    return;
+                }
+
+                // find the closest block, return or loop
+                const closestBlock = findClosestParentOfType(node, ["BlockStatement", "ReturnStatement", "ArrowFunctionExpression"]) || {};
+
+                // if our parent is a return we know we're ok
+                if (closestBlock.type === "ReturnStatement") {
+                    return;
+                }
+
+                // arrow functions don't always have blocks and implicitly return
+                if (closestBlock.type === "ArrowFunctionExpression") {
+                    return;
+                }
+
+                // block statements are part of functions and most if statements
+                if (closestBlock.type === "BlockStatement") {
+
+                    // find the last item in the block
+                    const lastItem = closestBlock.body[closestBlock.body.length - 1];
+
+                    // if the callback is the last thing in a block that might be ok
+                    if (isCallbackExpression(node, lastItem)) {
+
+                        const parentType = closestBlock.parent.type;
+
+                        // but only if the block is part of a function
+                        if (parentType === "FunctionExpression" ||
+                            parentType === "FunctionDeclaration" ||
+                            parentType === "ArrowFunctionExpression"
+                        ) {
+                            return;
+                        }
+
+                    }
+
+                    // ending a block with a return is also ok
+                    if (lastItem.type === "ReturnStatement") {
+
+                        // but only if the callback is immediately before
+                        if (isCallbackExpression(node, closestBlock.body[closestBlock.body.length - 2])) {
+                            return;
+                        }
+                    }
+
+                }
+
+                // as long as you're the child of a function at this point you should be asked to return
+                if (findClosestParentOfType(node, ["FunctionDeclaration", "FunctionExpression", "ArrowFunctionExpression"])) {
+                    context.report({ node, messageId: "missingReturn" });
+                }
+
+            }
+
+        };
+    }
+};

node_modules/eslint/lib/rules/camelcase.js

@@ -0,0 +1,217 @@
+/**
+ * @fileoverview Rule to flag non-camelcased identifiers
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce camelcase naming convention",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/camelcase"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    ignoreDestructuring: {
+                        type: "boolean"
+                    },
+                    properties: {
+                        enum: ["always", "never"]
+                    },
+                    allow: {
+                        type: "array",
+                        items: [
+                            {
+                                type: "string"
+                            }
+                        ],
+                        minItems: 0,
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            notCamelCase: "Identifier '{{name}}' is not in camel case."
+        }
+    },
+
+    create(context) {
+
+        const options = context.options[0] || {};
+        let properties = options.properties || "";
+        const ignoreDestructuring = options.ignoreDestructuring || false;
+        const allow = options.allow || [];
+
+        if (properties !== "always" && properties !== "never") {
+            properties = "always";
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // contains reported nodes to avoid reporting twice on destructuring with shorthand notation
+        const reported = [];
+        const ALLOWED_PARENT_TYPES = new Set(["CallExpression", "NewExpression"]);
+
+        /**
+         * Checks if a string contains an underscore and isn't all upper-case
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is underscored
+         * @private
+         */
+        function isUnderscored(name) {
+
+            // if there's an underscore, it might be A_CONSTANT, which is okay
+            return name.indexOf("_") > -1 && name !== name.toUpperCase();
+        }
+
+        /**
+         * Checks if a string match the ignore list
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is ignored
+         * @private
+         */
+        function isAllowed(name) {
+            return allow.findIndex(
+                entry => name === entry || name.match(new RegExp(entry))
+            ) !== -1;
+        }
+
+        /**
+         * Checks if a parent of a node is an ObjectPattern.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} if the node is inside an ObjectPattern
+         * @private
+         */
+        function isInsideObjectPattern(node) {
+            let { parent } = node;
+
+            while (parent) {
+                if (parent.type === "ObjectPattern") {
+                    return true;
+                }
+
+                parent = parent.parent;
+            }
+
+            return false;
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+            if (reported.indexOf(node) < 0) {
+                reported.push(node);
+                context.report({ node, messageId: "notCamelCase", data: { name: node.name } });
+            }
+        }
+
+        return {
+
+            Identifier(node) {
+
+                /*
+                 * Leading and trailing underscores are commonly used to flag
+                 * private/protected identifiers, strip them
+                 */
+                const name = node.name.replace(/^_+|_+$/g, ""),
+                    effectiveParent = (node.parent.type === "MemberExpression") ? node.parent.parent : node.parent;
+
+                // First, we ignore the node if it match the ignore list
+                if (isAllowed(name)) {
+                    return;
+                }
+
+                // MemberExpressions get special rules
+                if (node.parent.type === "MemberExpression") {
+
+                    // "never" check properties
+                    if (properties === "never") {
+                        return;
+                    }
+
+                    // Always report underscored object names
+                    if (node.parent.object.type === "Identifier" && node.parent.object.name === node.name && isUnderscored(name)) {
+                        report(node);
+
+                    // Report AssignmentExpressions only if they are the left side of the assignment
+                    } else if (effectiveParent.type === "AssignmentExpression" && isUnderscored(name) && (effectiveParent.right.type !== "MemberExpression" || effectiveParent.left.type === "MemberExpression" && effectiveParent.left.property.name === node.name)) {
+                        report(node);
+                    }
+
+                /*
+                 * Properties have their own rules, and
+                 * AssignmentPattern nodes can be treated like Properties:
+                 * e.g.: const { no_camelcased = false } = bar;
+                 */
+                } else if (node.parent.type === "Property" || node.parent.type === "AssignmentPattern") {
+
+                    if (node.parent.parent && node.parent.parent.type === "ObjectPattern") {
+                        if (node.parent.shorthand && node.parent.value.left && isUnderscored(name)) {
+
+                            report(node);
+                        }
+
+                        const assignmentKeyEqualsValue = node.parent.key.name === node.parent.value.name;
+
+                        // prevent checking righthand side of destructured object
+                        if (node.parent.key === node && node.parent.value !== node) {
+                            return;
+                        }
+
+                        const valueIsUnderscored = node.parent.value.name && isUnderscored(name);
+
+                        // ignore destructuring if the option is set, unless a new identifier is created
+                        if (valueIsUnderscored && !(assignmentKeyEqualsValue && ignoreDestructuring)) {
+                            report(node);
+                        }
+                    }
+
+                    // "never" check properties or always ignore destructuring
+                    if (properties === "never" || (ignoreDestructuring && isInsideObjectPattern(node))) {
+                        return;
+                    }
+
+                    // don't check right hand side of AssignmentExpression to prevent duplicate warnings
+                    if (isUnderscored(name) && !ALLOWED_PARENT_TYPES.has(effectiveParent.type) && !(node.parent.right === node)) {
+                        report(node);
+                    }
+
+                // Check if it's an import specifier
+                } else if (["ImportSpecifier", "ImportNamespaceSpecifier", "ImportDefaultSpecifier"].indexOf(node.parent.type) >= 0) {
+
+                    // Report only if the local imported identifier is underscored
+                    if (node.parent.local && node.parent.local.name === node.name && isUnderscored(name)) {
+                        report(node);
+                    }
+
+                // Report anything that is underscored that isn't a CallExpression
+                } else if (isUnderscored(name) && !ALLOWED_PARENT_TYPES.has(effectiveParent.type)) {
+                    report(node);
+                }
+            }
+
+        };
+
+    }
+};

node_modules/eslint/lib/rules/capitalized-comments.js

@@ -0,0 +1,311 @@
+/**
+ * @fileoverview enforce or disallow capitalization of the first letter of a comment
+ * @author Kevin Partington
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const LETTER_PATTERN = require("../util/patterns/letters");
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const DEFAULT_IGNORE_PATTERN = astUtils.COMMENTS_IGNORE_PATTERN,
+    WHITESPACE = /\s/g,
+    MAYBE_URL = /^\s*[^:/?#\s]+:\/\/[^?#]/, // TODO: Combine w/ max-len pattern?
+    DEFAULTS = {
+        ignorePattern: null,
+        ignoreInlineComments: false,
+        ignoreConsecutiveComments: false
+    };
+
+/*
+ * Base schema body for defining the basic capitalization rule, ignorePattern,
+ * and ignoreInlineComments values.
+ * This can be used in a few different ways in the actual schema.
+ */
+const SCHEMA_BODY = {
+    type: "object",
+    properties: {
+        ignorePattern: {
+            type: "string"
+        },
+        ignoreInlineComments: {
+            type: "boolean"
+        },
+        ignoreConsecutiveComments: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+
+/**
+ * Get normalized options for either block or line comments from the given
+ * user-provided options.
+ * - If the user-provided options is just a string, returns a normalized
+ *   set of options using default values for all other options.
+ * - If the user-provided options is an object, then a normalized option
+ *   set is returned. Options specified in overrides will take priority
+ *   over options specified in the main options object, which will in
+ *   turn take priority over the rule's defaults.
+ *
+ * @param {Object|string} rawOptions The user-provided options.
+ * @param {string} which Either "line" or "block".
+ * @returns {Object} The normalized options.
+ */
+function getNormalizedOptions(rawOptions, which) {
+    if (!rawOptions) {
+        return Object.assign({}, DEFAULTS);
+    }
+
+    return Object.assign({}, DEFAULTS, rawOptions[which] || rawOptions);
+}
+
+/**
+ * Get normalized options for block and line comments.
+ *
+ * @param {Object|string} rawOptions The user-provided options.
+ * @returns {Object} An object with "Line" and "Block" keys and corresponding
+ * normalized options objects.
+ */
+function getAllNormalizedOptions(rawOptions) {
+    return {
+        Line: getNormalizedOptions(rawOptions, "line"),
+        Block: getNormalizedOptions(rawOptions, "block")
+    };
+}
+
+/**
+ * Creates a regular expression for each ignorePattern defined in the rule
+ * options.
+ *
+ * This is done in order to avoid invoking the RegExp constructor repeatedly.
+ *
+ * @param {Object} normalizedOptions The normalized rule options.
+ * @returns {void}
+ */
+function createRegExpForIgnorePatterns(normalizedOptions) {
+    Object.keys(normalizedOptions).forEach(key => {
+        const ignorePatternStr = normalizedOptions[key].ignorePattern;
+
+        if (ignorePatternStr) {
+            const regExp = RegExp(`^\\s*(?:${ignorePatternStr})`);
+
+            normalizedOptions[key].ignorePatternRegExp = regExp;
+        }
+    });
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce or disallow capitalization of the first letter of a comment",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/capitalized-comments"
+        },
+
+        fixable: "code",
+
+        schema: [
+            { enum: ["always", "never"] },
+            {
+                oneOf: [
+                    SCHEMA_BODY,
+                    {
+                        type: "object",
+                        properties: {
+                            line: SCHEMA_BODY,
+                            block: SCHEMA_BODY
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            unexpectedLowercaseComment: "Comments should not begin with a lowercase character",
+            unexpectedUppercaseComment: "Comments should not begin with an uppercase character"
+        }
+    },
+
+    create(context) {
+
+        const capitalize = context.options[0] || "always",
+            normalizedOptions = getAllNormalizedOptions(context.options[1]),
+            sourceCode = context.getSourceCode();
+
+        createRegExpForIgnorePatterns(normalizedOptions);
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Checks whether a comment is an inline comment.
+         *
+         * For the purpose of this rule, a comment is inline if:
+         * 1. The comment is preceded by a token on the same line; and
+         * 2. The command is followed by a token on the same line.
+         *
+         * Note that the comment itself need not be single-line!
+         *
+         * Also, it follows from this definition that only block comments can
+         * be considered as possibly inline. This is because line comments
+         * would consume any following tokens on the same line as the comment.
+         *
+         * @param {ASTNode} comment The comment node to check.
+         * @returns {boolean} True if the comment is an inline comment, false
+         * otherwise.
+         */
+        function isInlineComment(comment) {
+            const previousToken = sourceCode.getTokenBefore(comment, { includeComments: true }),
+                nextToken = sourceCode.getTokenAfter(comment, { includeComments: true });
+
+            return Boolean(
+                previousToken &&
+                nextToken &&
+                comment.loc.start.line === previousToken.loc.end.line &&
+                comment.loc.end.line === nextToken.loc.start.line
+            );
+        }
+
+        /**
+         * Determine if a comment follows another comment.
+         *
+         * @param {ASTNode} comment The comment to check.
+         * @returns {boolean} True if the comment follows a valid comment.
+         */
+        function isConsecutiveComment(comment) {
+            const previousTokenOrComment = sourceCode.getTokenBefore(comment, { includeComments: true });
+
+            return Boolean(
+                previousTokenOrComment &&
+                ["Block", "Line"].indexOf(previousTokenOrComment.type) !== -1
+            );
+        }
+
+        /**
+         * Check a comment to determine if it is valid for this rule.
+         *
+         * @param {ASTNode} comment The comment node to process.
+         * @param {Object} options The options for checking this comment.
+         * @returns {boolean} True if the comment is valid, false otherwise.
+         */
+        function isCommentValid(comment, options) {
+
+            // 1. Check for default ignore pattern.
+            if (DEFAULT_IGNORE_PATTERN.test(comment.value)) {
+                return true;
+            }
+
+            // 2. Check for custom ignore pattern.
+            const commentWithoutAsterisks = comment.value
+                .replace(/\*/g, "");
+
+            if (options.ignorePatternRegExp && options.ignorePatternRegExp.test(commentWithoutAsterisks)) {
+                return true;
+            }
+
+            // 3. Check for inline comments.
+            if (options.ignoreInlineComments && isInlineComment(comment)) {
+                return true;
+            }
+
+            // 4. Is this a consecutive comment (and are we tolerating those)?
+            if (options.ignoreConsecutiveComments && isConsecutiveComment(comment)) {
+                return true;
+            }
+
+            // 5. Does the comment start with a possible URL?
+            if (MAYBE_URL.test(commentWithoutAsterisks)) {
+                return true;
+            }
+
+            // 6. Is the initial word character a letter?
+            const commentWordCharsOnly = commentWithoutAsterisks
+                .replace(WHITESPACE, "");
+
+            if (commentWordCharsOnly.length === 0) {
+                return true;
+            }
+
+            const firstWordChar = commentWordCharsOnly[0];
+
+            if (!LETTER_PATTERN.test(firstWordChar)) {
+                return true;
+            }
+
+            // 7. Check the case of the initial word character.
+            const isUppercase = firstWordChar !== firstWordChar.toLocaleLowerCase(),
+                isLowercase = firstWordChar !== firstWordChar.toLocaleUpperCase();
+
+            if (capitalize === "always" && isLowercase) {
+                return false;
+            }
+            if (capitalize === "never" && isUppercase) {
+                return false;
+            }
+
+            return true;
+        }
+
+        /**
+         * Process a comment to determine if it needs to be reported.
+         *
+         * @param {ASTNode} comment The comment node to process.
+         * @returns {void}
+         */
+        function processComment(comment) {
+            const options = normalizedOptions[comment.type],
+                commentValid = isCommentValid(comment, options);
+
+            if (!commentValid) {
+                const messageId = capitalize === "always"
+                    ? "unexpectedLowercaseComment"
+                    : "unexpectedUppercaseComment";
+
+                context.report({
+                    node: null, // Intentionally using loc instead
+                    loc: comment.loc,
+                    messageId,
+                    fix(fixer) {
+                        const match = comment.value.match(LETTER_PATTERN);
+
+                        return fixer.replaceTextRange(
+
+                            // Offset match.index by 2 to account for the first 2 characters that start the comment (// or /*)
+                            [comment.range[0] + match.index + 2, comment.range[0] + match.index + 3],
+                            capitalize === "always" ? match[0].toLocaleUpperCase() : match[0].toLocaleLowerCase()
+                        );
+                    }
+                });
+            }
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            Program() {
+                const comments = sourceCode.getAllComments();
+
+                comments.filter(token => token.type !== "Shebang").forEach(processComment);
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/class-methods-use-this.js

@@ -0,0 +1,118 @@
+/**
+ * @fileoverview Rule to enforce that all class methods use 'this'.
+ * @author Patrick Williams
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce that class methods utilize `this`",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/class-methods-use-this"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                exceptMethods: {
+                    type: "array",
+                    items: {
+                        type: "string"
+                    }
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            missingThis: "Expected 'this' to be used by class method '{{name}}'."
+        }
+    },
+    create(context) {
+        const config = context.options[0] ? Object.assign({}, context.options[0]) : {};
+        const exceptMethods = new Set(config.exceptMethods || []);
+
+        const stack = [];
+
+        /**
+         * Initializes the current context to false and pushes it onto the stack.
+         * These booleans represent whether 'this' has been used in the context.
+         * @returns {void}
+         * @private
+         */
+        function enterFunction() {
+            stack.push(false);
+        }
+
+        /**
+         * Check if the node is an instance method
+         * @param {ASTNode} node - node to check
+         * @returns {boolean} True if its an instance method
+         * @private
+         */
+        function isInstanceMethod(node) {
+            return !node.static && node.kind !== "constructor" && node.type === "MethodDefinition";
+        }
+
+        /**
+         * Check if the node is an instance method not excluded by config
+         * @param {ASTNode} node - node to check
+         * @returns {boolean} True if it is an instance method, and not excluded by config
+         * @private
+         */
+        function isIncludedInstanceMethod(node) {
+            return isInstanceMethod(node) && !exceptMethods.has(node.key.name);
+        }
+
+        /**
+         * Checks if we are leaving a function that is a method, and reports if 'this' has not been used.
+         * Static methods and the constructor are exempt.
+         * Then pops the context off the stack.
+         * @param {ASTNode} node - A function node that was entered.
+         * @returns {void}
+         * @private
+         */
+        function exitFunction(node) {
+            const methodUsesThis = stack.pop();
+
+            if (isIncludedInstanceMethod(node.parent) && !methodUsesThis) {
+                context.report({
+                    node,
+                    messageId: "missingThis",
+                    data: {
+                        name: node.parent.key.name
+                    }
+                });
+            }
+        }
+
+        /**
+         * Mark the current context as having used 'this'.
+         * @returns {void}
+         * @private
+         */
+        function markThisUsed() {
+            if (stack.length) {
+                stack[stack.length - 1] = true;
+            }
+        }
+
+        return {
+            FunctionDeclaration: enterFunction,
+            "FunctionDeclaration:exit": exitFunction,
+            FunctionExpression: enterFunction,
+            "FunctionExpression:exit": exitFunction,
+            ThisExpression: markThisUsed,
+            Super: markThisUsed
+        };
+    }
+};

node_modules/eslint/lib/rules/comma-dangle.js

@@ -0,0 +1,345 @@
+/**
+ * @fileoverview Rule to forbid or enforce dangling commas.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const DEFAULT_OPTIONS = Object.freeze({
+    arrays: "never",
+    objects: "never",
+    imports: "never",
+    exports: "never",
+    functions: "ignore"
+});
+
+/**
+ * Checks whether or not a trailing comma is allowed in a given node.
+ * If the `lastItem` is `RestElement` or `RestProperty`, it disallows trailing commas.
+ *
+ * @param {ASTNode} lastItem - The node of the last element in the given node.
+ * @returns {boolean} `true` if a trailing comma is allowed.
+ */
+function isTrailingCommaAllowed(lastItem) {
+    return !(
+        lastItem.type === "RestElement" ||
+        lastItem.type === "RestProperty" ||
+        lastItem.type === "ExperimentalRestProperty"
+    );
+}
+
+/**
+ * Normalize option value.
+ *
+ * @param {string|Object|undefined} optionValue - The 1st option value to normalize.
+ * @returns {Object} The normalized option value.
+ */
+function normalizeOptions(optionValue) {
+    if (typeof optionValue === "string") {
+        return {
+            arrays: optionValue,
+            objects: optionValue,
+            imports: optionValue,
+            exports: optionValue,
+
+            // For backward compatibility, always ignore functions.
+            functions: "ignore"
+        };
+    }
+    if (typeof optionValue === "object" && optionValue !== null) {
+        return {
+            arrays: optionValue.arrays || DEFAULT_OPTIONS.arrays,
+            objects: optionValue.objects || DEFAULT_OPTIONS.objects,
+            imports: optionValue.imports || DEFAULT_OPTIONS.imports,
+            exports: optionValue.exports || DEFAULT_OPTIONS.exports,
+            functions: optionValue.functions || DEFAULT_OPTIONS.functions
+        };
+    }
+
+    return DEFAULT_OPTIONS;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "require or disallow trailing commas",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/comma-dangle"
+        },
+
+        fixable: "code",
+
+        schema: {
+            definitions: {
+                value: {
+                    enum: [
+                        "always-multiline",
+                        "always",
+                        "never",
+                        "only-multiline"
+                    ]
+                },
+                valueWithIgnore: {
+                    enum: [
+                        "always-multiline",
+                        "always",
+                        "ignore",
+                        "never",
+                        "only-multiline"
+                    ]
+                }
+            },
+            type: "array",
+            items: [
+                {
+                    oneOf: [
+                        {
+                            $ref: "#/definitions/value"
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                arrays: { $ref: "#/definitions/valueWithIgnore" },
+                                objects: { $ref: "#/definitions/valueWithIgnore" },
+                                imports: { $ref: "#/definitions/valueWithIgnore" },
+                                exports: { $ref: "#/definitions/valueWithIgnore" },
+                                functions: { $ref: "#/definitions/valueWithIgnore" }
+                            },
+                            additionalProperties: false
+                        }
+                    ]
+                }
+            ]
+        },
+
+        messages: {
+            unexpected: "Unexpected trailing comma.",
+            missing: "Missing trailing comma."
+        }
+    },
+
+    create(context) {
+        const options = normalizeOptions(context.options[0]);
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Gets the last item of the given node.
+         * @param {ASTNode} node - The node to get.
+         * @returns {ASTNode|null} The last node or null.
+         */
+        function getLastItem(node) {
+            switch (node.type) {
+                case "ObjectExpression":
+                case "ObjectPattern":
+                    return lodash.last(node.properties);
+                case "ArrayExpression":
+                case "ArrayPattern":
+                    return lodash.last(node.elements);
+                case "ImportDeclaration":
+                case "ExportNamedDeclaration":
+                    return lodash.last(node.specifiers);
+                case "FunctionDeclaration":
+                case "FunctionExpression":
+                case "ArrowFunctionExpression":
+                    return lodash.last(node.params);
+                case "CallExpression":
+                case "NewExpression":
+                    return lodash.last(node.arguments);
+                default:
+                    return null;
+            }
+        }
+
+        /**
+         * Gets the trailing comma token of the given node.
+         * If the trailing comma does not exist, this returns the token which is
+         * the insertion point of the trailing comma token.
+         *
+         * @param {ASTNode} node - The node to get.
+         * @param {ASTNode} lastItem - The last item of the node.
+         * @returns {Token} The trailing comma token or the insertion point.
+         */
+        function getTrailingToken(node, lastItem) {
+            switch (node.type) {
+                case "ObjectExpression":
+                case "ArrayExpression":
+                case "CallExpression":
+                case "NewExpression":
+                    return sourceCode.getLastToken(node, 1);
+                default: {
+                    const nextToken = sourceCode.getTokenAfter(lastItem);
+
+                    if (astUtils.isCommaToken(nextToken)) {
+                        return nextToken;
+                    }
+                    return sourceCode.getLastToken(lastItem);
+                }
+            }
+        }
+
+        /**
+         * Checks whether or not a given node is multiline.
+         * This rule handles a given node as multiline when the closing parenthesis
+         * and the last element are not on the same line.
+         *
+         * @param {ASTNode} node - A node to check.
+         * @returns {boolean} `true` if the node is multiline.
+         */
+        function isMultiline(node) {
+            const lastItem = getLastItem(node);
+
+            if (!lastItem) {
+                return false;
+            }
+
+            const penultimateToken = getTrailingToken(node, lastItem);
+            const lastToken = sourceCode.getTokenAfter(penultimateToken);
+
+            return lastToken.loc.end.line !== penultimateToken.loc.end.line;
+        }
+
+        /**
+         * Reports a trailing comma if it exists.
+         *
+         * @param {ASTNode} node - A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function forbidTrailingComma(node) {
+            const lastItem = getLastItem(node);
+
+            if (!lastItem || (node.type === "ImportDeclaration" && lastItem.type !== "ImportSpecifier")) {
+                return;
+            }
+
+            const trailingToken = getTrailingToken(node, lastItem);
+
+            if (astUtils.isCommaToken(trailingToken)) {
+                context.report({
+                    node: lastItem,
+                    loc: trailingToken.loc.start,
+                    messageId: "unexpected",
+                    fix(fixer) {
+                        return fixer.remove(trailingToken);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports the last element of a given node if it does not have a trailing
+         * comma.
+         *
+         * If a given node is `ArrayPattern` which has `RestElement`, the trailing
+         * comma is disallowed, so report if it exists.
+         *
+         * @param {ASTNode} node - A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function forceTrailingComma(node) {
+            const lastItem = getLastItem(node);
+
+            if (!lastItem || (node.type === "ImportDeclaration" && lastItem.type !== "ImportSpecifier")) {
+                return;
+            }
+            if (!isTrailingCommaAllowed(lastItem)) {
+                forbidTrailingComma(node);
+                return;
+            }
+
+            const trailingToken = getTrailingToken(node, lastItem);
+
+            if (trailingToken.value !== ",") {
+                context.report({
+                    node: lastItem,
+                    loc: trailingToken.loc.end,
+                    messageId: "missing",
+                    fix(fixer) {
+                        return fixer.insertTextAfter(trailingToken, ",");
+                    }
+                });
+            }
+        }
+
+        /**
+         * If a given node is multiline, reports the last element of a given node
+         * when it does not have a trailing comma.
+         * Otherwise, reports a trailing comma if it exists.
+         *
+         * @param {ASTNode} node - A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function forceTrailingCommaIfMultiline(node) {
+            if (isMultiline(node)) {
+                forceTrailingComma(node);
+            } else {
+                forbidTrailingComma(node);
+            }
+        }
+
+        /**
+         * Only if a given node is not multiline, reports the last element of a given node
+         * when it does not have a trailing comma.
+         * Otherwise, reports a trailing comma if it exists.
+         *
+         * @param {ASTNode} node - A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function allowTrailingCommaIfMultiline(node) {
+            if (!isMultiline(node)) {
+                forbidTrailingComma(node);
+            }
+        }
+
+        const predicate = {
+            always: forceTrailingComma,
+            "always-multiline": forceTrailingCommaIfMultiline,
+            "only-multiline": allowTrailingCommaIfMultiline,
+            never: forbidTrailingComma,
+            ignore: lodash.noop
+        };
+
+        return {
+            ObjectExpression: predicate[options.objects],
+            ObjectPattern: predicate[options.objects],
+
+            ArrayExpression: predicate[options.arrays],
+            ArrayPattern: predicate[options.arrays],
+
+            ImportDeclaration: predicate[options.imports],
+
+            ExportNamedDeclaration: predicate[options.exports],
+
+            FunctionDeclaration: predicate[options.functions],
+            FunctionExpression: predicate[options.functions],
+            ArrowFunctionExpression: predicate[options.functions],
+            CallExpression: predicate[options.functions],
+            NewExpression: predicate[options.functions]
+        };
+    }
+};

node_modules/eslint/lib/rules/comma-spacing.js

@@ -0,0 +1,189 @@
+/**
+ * @fileoverview Comma spacing - validates spacing before and after comma
+ * @author Vignesh Anand aka vegetableman.
+ */
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent spacing before and after commas",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/comma-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: {
+                        type: "boolean"
+                    },
+                    after: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            missing: "A space is required {{loc}} ','.",
+            unexpected: "There should be no space {{loc}} ','."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.getSourceCode();
+        const tokensAndComments = sourceCode.tokensAndComments;
+
+        const options = {
+            before: context.options[0] ? !!context.options[0].before : false,
+            after: context.options[0] ? !!context.options[0].after : true
+        };
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // list of comma tokens to ignore for the check of leading whitespace
+        const commaTokensToIgnore = [];
+
+        /**
+         * Reports a spacing error with an appropriate message.
+         * @param {ASTNode} node The binary expression node to report.
+         * @param {string} loc Is the error "before" or "after" the comma?
+         * @param {ASTNode} otherNode The node at the left or right of `node`
+         * @returns {void}
+         * @private
+         */
+        function report(node, loc, otherNode) {
+            context.report({
+                node,
+                fix(fixer) {
+                    if (options[loc]) {
+                        if (loc === "before") {
+                            return fixer.insertTextBefore(node, " ");
+                        }
+                        return fixer.insertTextAfter(node, " ");
+
+                    }
+                    let start, end;
+                    const newText = "";
+
+                    if (loc === "before") {
+                        start = otherNode.range[1];
+                        end = node.range[0];
+                    } else {
+                        start = node.range[1];
+                        end = otherNode.range[0];
+                    }
+
+                    return fixer.replaceTextRange([start, end], newText);
+
+                },
+                messageId: options[loc] ? "missing" : "unexpected",
+                data: {
+                    loc
+                }
+            });
+        }
+
+        /**
+         * Validates the spacing around a comma token.
+         * @param {Object} tokens - The tokens to be validated.
+         * @param {Token} tokens.comma The token representing the comma.
+         * @param {Token} [tokens.left] The last token before the comma.
+         * @param {Token} [tokens.right] The first token after the comma.
+         * @param {Token|ASTNode} reportItem The item to use when reporting an error.
+         * @returns {void}
+         * @private
+         */
+        function validateCommaItemSpacing(tokens, reportItem) {
+            if (tokens.left && astUtils.isTokenOnSameLine(tokens.left, tokens.comma) &&
+                    (options.before !== sourceCode.isSpaceBetweenTokens(tokens.left, tokens.comma))
+            ) {
+                report(reportItem, "before", tokens.left);
+            }
+
+            if (tokens.right && !options.after && tokens.right.type === "Line") {
+                return;
+            }
+
+            if (tokens.right && astUtils.isTokenOnSameLine(tokens.comma, tokens.right) &&
+                    (options.after !== sourceCode.isSpaceBetweenTokens(tokens.comma, tokens.right))
+            ) {
+                report(reportItem, "after", tokens.right);
+            }
+        }
+
+        /**
+         * Adds null elements of the given ArrayExpression or ArrayPattern node to the ignore list.
+         * @param {ASTNode} node An ArrayExpression or ArrayPattern node.
+         * @returns {void}
+         */
+        function addNullElementsToIgnoreList(node) {
+            let previousToken = sourceCode.getFirstToken(node);
+
+            node.elements.forEach(element => {
+                let token;
+
+                if (element === null) {
+                    token = sourceCode.getTokenAfter(previousToken);
+
+                    if (astUtils.isCommaToken(token)) {
+                        commaTokensToIgnore.push(token);
+                    }
+                } else {
+                    token = sourceCode.getTokenAfter(element);
+                }
+
+                previousToken = token;
+            });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            "Program:exit"() {
+                tokensAndComments.forEach((token, i) => {
+
+                    if (!astUtils.isCommaToken(token)) {
+                        return;
+                    }
+
+                    if (token && token.type === "JSXText") {
+                        return;
+                    }
+
+                    const previousToken = tokensAndComments[i - 1];
+                    const nextToken = tokensAndComments[i + 1];
+
+                    validateCommaItemSpacing({
+                        comma: token,
+                        left: astUtils.isCommaToken(previousToken) || commaTokensToIgnore.indexOf(token) > -1 ? null : previousToken,
+                        right: astUtils.isCommaToken(nextToken) ? null : nextToken
+                    }, token);
+                });
+            },
+            ArrayExpression: addNullElementsToIgnoreList,
+            ArrayPattern: addNullElementsToIgnoreList
+
+        };
+
+    }
+};

node_modules/eslint/lib/rules/comma-style.js

@@ -0,0 +1,310 @@
+/**
+ * @fileoverview Comma style - enforces comma styles of two types: last and first
+ * @author Vignesh Anand aka vegetableman
+ */
+
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent comma style",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/comma-style"
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+                enum: ["first", "last"]
+            },
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "object",
+                        additionalProperties: {
+                            type: "boolean"
+                        }
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedLineBeforeAndAfterComma: "Bad line breaking before and after ','.",
+            expectedCommaFirst: "',' should be placed first.",
+            expectedCommaLast: "',' should be placed last."
+        }
+    },
+
+    create(context) {
+        const style = context.options[0] || "last",
+            sourceCode = context.getSourceCode();
+        const exceptions = {
+            ArrayPattern: true,
+            ArrowFunctionExpression: true,
+            CallExpression: true,
+            FunctionDeclaration: true,
+            FunctionExpression: true,
+            ImportDeclaration: true,
+            ObjectPattern: true,
+            NewExpression: true
+        };
+
+        if (context.options.length === 2 && Object.prototype.hasOwnProperty.call(context.options[1], "exceptions")) {
+            const keys = Object.keys(context.options[1].exceptions);
+
+            for (let i = 0; i < keys.length; i++) {
+                exceptions[keys[i]] = context.options[1].exceptions[keys[i]];
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Modified text based on the style
+         * @param {string} styleType Style type
+         * @param {string} text Source code text
+         * @returns {string} modified text
+         * @private
+         */
+        function getReplacedText(styleType, text) {
+            switch (styleType) {
+                case "between":
+                    return `,${text.replace("\n", "")}`;
+
+                case "first":
+                    return `${text},`;
+
+                case "last":
+                    return `,${text}`;
+
+                default:
+                    return "";
+            }
+        }
+
+        /**
+         * Determines the fixer function for a given style.
+         * @param {string} styleType comma style
+         * @param {ASTNode} previousItemToken The token to check.
+         * @param {ASTNode} commaToken The token to check.
+         * @param {ASTNode} currentItemToken The token to check.
+         * @returns {Function} Fixer function
+         * @private
+         */
+        function getFixerFunction(styleType, previousItemToken, commaToken, currentItemToken) {
+            const text =
+                sourceCode.text.slice(previousItemToken.range[1], commaToken.range[0]) +
+                sourceCode.text.slice(commaToken.range[1], currentItemToken.range[0]);
+            const range = [previousItemToken.range[1], currentItemToken.range[0]];
+
+            return function(fixer) {
+                return fixer.replaceTextRange(range, getReplacedText(styleType, text));
+            };
+        }
+
+        /**
+         * Validates the spacing around single items in lists.
+         * @param {Token} previousItemToken The last token from the previous item.
+         * @param {Token} commaToken The token representing the comma.
+         * @param {Token} currentItemToken The first token of the current item.
+         * @param {Token} reportItem The item to use when reporting an error.
+         * @returns {void}
+         * @private
+         */
+        function validateCommaItemSpacing(previousItemToken, commaToken, currentItemToken, reportItem) {
+
+            // if single line
+            if (astUtils.isTokenOnSameLine(commaToken, currentItemToken) &&
+                    astUtils.isTokenOnSameLine(previousItemToken, commaToken)) {
+
+                // do nothing.
+
+            } else if (!astUtils.isTokenOnSameLine(commaToken, currentItemToken) &&
+                    !astUtils.isTokenOnSameLine(previousItemToken, commaToken)) {
+
+                // lone comma
+                context.report({
+                    node: reportItem,
+                    loc: {
+                        line: commaToken.loc.end.line,
+                        column: commaToken.loc.start.column
+                    },
+                    messageId: "unexpectedLineBeforeAndAfterComma",
+                    fix: getFixerFunction("between", previousItemToken, commaToken, currentItemToken)
+                });
+
+            } else if (style === "first" && !astUtils.isTokenOnSameLine(commaToken, currentItemToken)) {
+
+                context.report({
+                    node: reportItem,
+                    messageId: "expectedCommaFirst",
+                    fix: getFixerFunction(style, previousItemToken, commaToken, currentItemToken)
+                });
+
+            } else if (style === "last" && astUtils.isTokenOnSameLine(commaToken, currentItemToken)) {
+
+                context.report({
+                    node: reportItem,
+                    loc: {
+                        line: commaToken.loc.end.line,
+                        column: commaToken.loc.end.column
+                    },
+                    messageId: "expectedCommaLast",
+                    fix: getFixerFunction(style, previousItemToken, commaToken, currentItemToken)
+                });
+            }
+        }
+
+        /**
+         * Checks the comma placement with regards to a declaration/property/element
+         * @param {ASTNode} node The binary expression node to check
+         * @param {string} property The property of the node containing child nodes.
+         * @private
+         * @returns {void}
+         */
+        function validateComma(node, property) {
+            const items = node[property],
+                arrayLiteral = (node.type === "ArrayExpression" || node.type === "ArrayPattern");
+
+            if (items.length > 1 || arrayLiteral) {
+
+                // seed as opening [
+                let previousItemToken = sourceCode.getFirstToken(node);
+
+                items.forEach(item => {
+                    const commaToken = item ? sourceCode.getTokenBefore(item) : previousItemToken,
+                        currentItemToken = item ? sourceCode.getFirstToken(item) : sourceCode.getTokenAfter(commaToken),
+                        reportItem = item || currentItemToken;
+
+                    /*
+                     * This works by comparing three token locations:
+                     * - previousItemToken is the last token of the previous item
+                     * - commaToken is the location of the comma before the current item
+                     * - currentItemToken is the first token of the current item
+                     *
+                     * These values get switched around if item is undefined.
+                     * previousItemToken will refer to the last token not belonging
+                     * to the current item, which could be a comma or an opening
+                     * square bracket. currentItemToken could be a comma.
+                     *
+                     * All comparisons are done based on these tokens directly, so
+                     * they are always valid regardless of an undefined item.
+                     */
+                    if (astUtils.isCommaToken(commaToken)) {
+                        validateCommaItemSpacing(previousItemToken, commaToken,
+                            currentItemToken, reportItem);
+                    }
+
+                    if (item) {
+                        const tokenAfterItem = sourceCode.getTokenAfter(item, astUtils.isNotClosingParenToken);
+
+                        previousItemToken = tokenAfterItem
+                            ? sourceCode.getTokenBefore(tokenAfterItem)
+                            : sourceCode.ast.tokens[sourceCode.ast.tokens.length - 1];
+                    }
+                });
+
+                /*
+                 * Special case for array literals that have empty last items, such
+                 * as [ 1, 2, ]. These arrays only have two items show up in the
+                 * AST, so we need to look at the token to verify that there's no
+                 * dangling comma.
+                 */
+                if (arrayLiteral) {
+
+                    const lastToken = sourceCode.getLastToken(node),
+                        nextToLastToken = sourceCode.getTokenBefore(lastToken);
+
+                    if (astUtils.isCommaToken(nextToLastToken)) {
+                        validateCommaItemSpacing(
+                            sourceCode.getTokenBefore(nextToLastToken),
+                            nextToLastToken,
+                            lastToken,
+                            lastToken
+                        );
+                    }
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        const nodes = {};
+
+        if (!exceptions.VariableDeclaration) {
+            nodes.VariableDeclaration = function(node) {
+                validateComma(node, "declarations");
+            };
+        }
+        if (!exceptions.ObjectExpression) {
+            nodes.ObjectExpression = function(node) {
+                validateComma(node, "properties");
+            };
+        }
+        if (!exceptions.ObjectPattern) {
+            nodes.ObjectPattern = function(node) {
+                validateComma(node, "properties");
+            };
+        }
+        if (!exceptions.ArrayExpression) {
+            nodes.ArrayExpression = function(node) {
+                validateComma(node, "elements");
+            };
+        }
+        if (!exceptions.ArrayPattern) {
+            nodes.ArrayPattern = function(node) {
+                validateComma(node, "elements");
+            };
+        }
+        if (!exceptions.FunctionDeclaration) {
+            nodes.FunctionDeclaration = function(node) {
+                validateComma(node, "params");
+            };
+        }
+        if (!exceptions.FunctionExpression) {
+            nodes.FunctionExpression = function(node) {
+                validateComma(node, "params");
+            };
+        }
+        if (!exceptions.ArrowFunctionExpression) {
+            nodes.ArrowFunctionExpression = function(node) {
+                validateComma(node, "params");
+            };
+        }
+        if (!exceptions.CallExpression) {
+            nodes.CallExpression = function(node) {
+                validateComma(node, "arguments");
+            };
+        }
+        if (!exceptions.ImportDeclaration) {
+            nodes.ImportDeclaration = function(node) {
+                validateComma(node, "specifiers");
+            };
+        }
+        if (!exceptions.NewExpression) {
+            nodes.NewExpression = function(node) {
+                validateComma(node, "arguments");
+            };
+        }
+
+        return nodes;
+    }
+};

node_modules/eslint/lib/rules/complexity.js

@@ -0,0 +1,161 @@
+/**
+ * @fileoverview Counts the cyclomatic complexity of each function of the script. See http://en.wikipedia.org/wiki/Cyclomatic_complexity.
+ * Counts the number of if, conditional, for, whilte, try, switch/case,
+ * @author Patrick Brosset
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce a maximum cyclomatic complexity allowed in a program",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/complexity"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            complex: "{{name}} has a complexity of {{complexity}}."
+        }
+    },
+
+    create(context) {
+        const option = context.options[0];
+        let THRESHOLD = 20;
+
+        if (typeof option === "object" && Object.prototype.hasOwnProperty.call(option, "maximum") && typeof option.maximum === "number") {
+            THRESHOLD = option.maximum;
+        }
+        if (typeof option === "object" && Object.prototype.hasOwnProperty.call(option, "max") && typeof option.max === "number") {
+            THRESHOLD = option.max;
+        }
+        if (typeof option === "number") {
+            THRESHOLD = option;
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // Using a stack to store complexity (handling nested functions)
+        const fns = [];
+
+        /**
+         * When parsing a new function, store it in our function stack
+         * @returns {void}
+         * @private
+         */
+        function startFunction() {
+            fns.push(1);
+        }
+
+        /**
+         * Evaluate the node at the end of function
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function endFunction(node) {
+            const name = lodash.upperFirst(astUtils.getFunctionNameWithKind(node));
+            const complexity = fns.pop();
+
+            if (complexity > THRESHOLD) {
+                context.report({
+                    node,
+                    messageId: "complex",
+                    data: { name, complexity }
+                });
+            }
+        }
+
+        /**
+         * Increase the complexity of the function in context
+         * @returns {void}
+         * @private
+         */
+        function increaseComplexity() {
+            if (fns.length) {
+                fns[fns.length - 1]++;
+            }
+        }
+
+        /**
+         * Increase the switch complexity in context
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function increaseSwitchComplexity(node) {
+
+            // Avoiding `default`
+            if (node.test) {
+                increaseComplexity();
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            FunctionDeclaration: startFunction,
+            FunctionExpression: startFunction,
+            ArrowFunctionExpression: startFunction,
+            "FunctionDeclaration:exit": endFunction,
+            "FunctionExpression:exit": endFunction,
+            "ArrowFunctionExpression:exit": endFunction,
+
+            CatchClause: increaseComplexity,
+            ConditionalExpression: increaseComplexity,
+            LogicalExpression: increaseComplexity,
+            ForStatement: increaseComplexity,
+            ForInStatement: increaseComplexity,
+            ForOfStatement: increaseComplexity,
+            IfStatement: increaseComplexity,
+            SwitchCase: increaseSwitchComplexity,
+            WhileStatement: increaseComplexity,
+            DoWhileStatement: increaseComplexity
+        };
+
+    }
+};

node_modules/eslint/lib/rules/computed-property-spacing.js

@@ -0,0 +1,187 @@
+/**
+ * @fileoverview Disallows or enforces spaces inside computed properties.
+ * @author Jamund Ferguson
+ */
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent spacing inside computed property brackets",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/computed-property-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            }
+        ],
+
+        messages: {
+            unexpectedSpaceBefore: "There should be no space before '{{tokenValue}}'.",
+            unexpectedSpaceAfter: "There should be no space after '{{tokenValue}}'.",
+
+            missingSpaceBefore: "A space is required before '{{tokenValue}}'.",
+            missingSpaceAfter: "A space is required after '{{tokenValue}}'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+        const propertyNameMustBeSpaced = context.options[0] === "always"; // default is "never"
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Reports that there shouldn't be a space after the first token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @param {Token} tokenAfter - The token after `token`.
+         * @returns {void}
+         */
+        function reportNoBeginningSpace(node, token, tokenAfter) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                messageId: "unexpectedSpaceAfter",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.removeRange([token.range[1], tokenAfter.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there shouldn't be a space before the last token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @param {Token} tokenBefore - The token before `token`.
+         * @returns {void}
+         */
+        function reportNoEndingSpace(node, token, tokenBefore) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                messageId: "unexpectedSpaceBefore",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.removeRange([tokenBefore.range[1], token.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a space after the first token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredBeginningSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                messageId: "missingSpaceAfter",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextAfter(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a space before the last token
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @param {Token} token - The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredEndingSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc.start,
+                messageId: "missingSpaceBefore",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextBefore(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Returns a function that checks the spacing of a node on the property name
+         * that was passed in.
+         * @param {string} propertyName The property on the node to check for spacing
+         * @returns {Function} A function that will check spacing on a node
+         */
+        function checkSpacing(propertyName) {
+            return function(node) {
+                if (!node.computed) {
+                    return;
+                }
+
+                const property = node[propertyName];
+
+                const before = sourceCode.getTokenBefore(property),
+                    first = sourceCode.getFirstToken(property),
+                    last = sourceCode.getLastToken(property),
+                    after = sourceCode.getTokenAfter(property);
+
+                if (astUtils.isTokenOnSameLine(before, first)) {
+                    if (propertyNameMustBeSpaced) {
+                        if (!sourceCode.isSpaceBetweenTokens(before, first) && astUtils.isTokenOnSameLine(before, first)) {
+                            reportRequiredBeginningSpace(node, before);
+                        }
+                    } else {
+                        if (sourceCode.isSpaceBetweenTokens(before, first)) {
+                            reportNoBeginningSpace(node, before, first);
+                        }
+                    }
+                }
+
+                if (astUtils.isTokenOnSameLine(last, after)) {
+                    if (propertyNameMustBeSpaced) {
+                        if (!sourceCode.isSpaceBetweenTokens(last, after) && astUtils.isTokenOnSameLine(last, after)) {
+                            reportRequiredEndingSpace(node, after);
+                        }
+                    } else {
+                        if (sourceCode.isSpaceBetweenTokens(last, after)) {
+                            reportNoEndingSpace(node, after, last);
+                        }
+                    }
+                }
+            };
+        }
+
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Property: checkSpacing("key"),
+            MemberExpression: checkSpacing("property")
+        };
+
+    }
+};

node_modules/eslint/lib/rules/consistent-return.js

@@ -0,0 +1,196 @@
+/**
+ * @fileoverview Rule to flag consistent return values
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is an `Identifier` node which was named a given name.
+ * @param {ASTNode} node - A node to check.
+ * @param {string} name - An expected name of the node.
+ * @returns {boolean} `true` if the node is an `Identifier` node which was named as expected.
+ */
+function isIdentifier(node, name) {
+    return node.type === "Identifier" && node.name === name;
+}
+
+/**
+ * Checks whether or not a given code path segment is unreachable.
+ * @param {CodePathSegment} segment - A CodePathSegment to check.
+ * @returns {boolean} `true` if the segment is unreachable.
+ */
+function isUnreachable(segment) {
+    return !segment.reachable;
+}
+
+/**
+ * Checks whether a given node is a `constructor` method in an ES6 class
+ * @param {ASTNode} node A node to check
+ * @returns {boolean} `true` if the node is a `constructor` method
+ */
+function isClassConstructor(node) {
+    return node.type === "FunctionExpression" &&
+        node.parent &&
+        node.parent.type === "MethodDefinition" &&
+        node.parent.kind === "constructor";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require `return` statements to either always or never specify values",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/consistent-return"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                treatUndefinedAsUnspecified: {
+                    type: "boolean"
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            missingReturn: "Expected to return a value at the end of {{name}}.",
+            missingReturnValue: "{{name}} expected a return value.",
+            unexpectedReturnValue: "{{name}} expected no return value."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const treatUndefinedAsUnspecified = options.treatUndefinedAsUnspecified === true;
+        let funcInfo = null;
+
+        /**
+         * Checks whether of not the implicit returning is consistent if the last
+         * code path segment is reachable.
+         *
+         * @param {ASTNode} node - A program/function node to check.
+         * @returns {void}
+         */
+        function checkLastSegment(node) {
+            let loc, name;
+
+            /*
+             * Skip if it expected no return value or unreachable.
+             * When unreachable, all paths are returned or thrown.
+             */
+            if (!funcInfo.hasReturnValue ||
+                funcInfo.codePath.currentSegments.every(isUnreachable) ||
+                astUtils.isES5Constructor(node) ||
+                isClassConstructor(node)
+            ) {
+                return;
+            }
+
+            // Adjust a location and a message.
+            if (node.type === "Program") {
+
+                // The head of program.
+                loc = { line: 1, column: 0 };
+                name = "program";
+            } else if (node.type === "ArrowFunctionExpression") {
+
+                // `=>` token
+                loc = context.getSourceCode().getTokenBefore(node.body, astUtils.isArrowToken).loc.start;
+            } else if (
+                node.parent.type === "MethodDefinition" ||
+                (node.parent.type === "Property" && node.parent.method)
+            ) {
+
+                // Method name.
+                loc = node.parent.key.loc.start;
+            } else {
+
+                // Function name or `function` keyword.
+                loc = (node.id || node).loc.start;
+            }
+
+            if (!name) {
+                name = astUtils.getFunctionNameWithKind(node);
+            }
+
+            // Reports.
+            context.report({
+                node,
+                loc,
+                messageId: "missingReturn",
+                data: { name }
+            });
+        }
+
+        return {
+
+            // Initializes/Disposes state of each code path.
+            onCodePathStart(codePath, node) {
+                funcInfo = {
+                    upper: funcInfo,
+                    codePath,
+                    hasReturn: false,
+                    hasReturnValue: false,
+                    messageId: "",
+                    node
+                };
+            },
+            onCodePathEnd() {
+                funcInfo = funcInfo.upper;
+            },
+
+            // Reports a given return statement if it's inconsistent.
+            ReturnStatement(node) {
+                const argument = node.argument;
+                let hasReturnValue = Boolean(argument);
+
+                if (treatUndefinedAsUnspecified && hasReturnValue) {
+                    hasReturnValue = !isIdentifier(argument, "undefined") && argument.operator !== "void";
+                }
+
+                if (!funcInfo.hasReturn) {
+                    funcInfo.hasReturn = true;
+                    funcInfo.hasReturnValue = hasReturnValue;
+                    funcInfo.messageId = hasReturnValue ? "missingReturnValue" : "unexpectedReturnValue";
+                    funcInfo.data = {
+                        name: funcInfo.node.type === "Program"
+                            ? "Program"
+                            : lodash.upperFirst(astUtils.getFunctionNameWithKind(funcInfo.node))
+                    };
+                } else if (funcInfo.hasReturnValue !== hasReturnValue) {
+                    context.report({
+                        node,
+                        messageId: funcInfo.messageId,
+                        data: funcInfo.data
+                    });
+                }
+            },
+
+            // Reports a given program/function if the implicit returning is not consistent.
+            "Program:exit": checkLastSegment,
+            "FunctionDeclaration:exit": checkLastSegment,
+            "FunctionExpression:exit": checkLastSegment,
+            "ArrowFunctionExpression:exit": checkLastSegment
+        };
+    }
+};

node_modules/eslint/lib/rules/consistent-this.js

@@ -0,0 +1,151 @@
+/**
+ * @fileoverview Rule to enforce consistent naming of "this" context variables
+ * @author Raphael Pigulla
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce consistent naming when capturing the current execution context",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/consistent-this"
+        },
+
+        schema: {
+            type: "array",
+            items: {
+                type: "string",
+                minLength: 1
+            },
+            uniqueItems: true
+        },
+
+        messages: {
+            aliasNotAssignedToThis: "Designated alias '{{name}}' is not assigned to 'this'.",
+            unexpectedAlias: "Unexpected alias '{{name}}' for 'this'."
+        }
+    },
+
+    create(context) {
+        let aliases = [];
+
+        if (context.options.length === 0) {
+            aliases.push("that");
+        } else {
+            aliases = context.options;
+        }
+
+        /**
+         * Reports that a variable declarator or assignment expression is assigning
+         * a non-'this' value to the specified alias.
+         * @param {ASTNode} node - The assigning node.
+         * @param {string}  name - the name of the alias that was incorrectly used.
+         * @returns {void}
+         */
+        function reportBadAssignment(node, name) {
+            context.report({ node, messageId: "aliasNotAssignedToThis", data: { name } });
+        }
+
+        /**
+         * Checks that an assignment to an identifier only assigns 'this' to the
+         * appropriate alias, and the alias is only assigned to 'this'.
+         * @param {ASTNode} node - The assigning node.
+         * @param {Identifier} name - The name of the variable assigned to.
+         * @param {Expression} value - The value of the assignment.
+         * @returns {void}
+         */
+        function checkAssignment(node, name, value) {
+            const isThis = value.type === "ThisExpression";
+
+            if (aliases.indexOf(name) !== -1) {
+                if (!isThis || node.operator && node.operator !== "=") {
+                    reportBadAssignment(node, name);
+                }
+            } else if (isThis) {
+                context.report({ node, messageId: "unexpectedAlias", data: { name } });
+            }
+        }
+
+        /**
+         * Ensures that a variable declaration of the alias in a program or function
+         * is assigned to the correct value.
+         * @param {string} alias alias the check the assignment of.
+         * @param {Object} scope scope of the current code we are checking.
+         * @private
+         * @returns {void}
+         */
+        function checkWasAssigned(alias, scope) {
+            const variable = scope.set.get(alias);
+
+            if (!variable) {
+                return;
+            }
+
+            if (variable.defs.some(def => def.node.type === "VariableDeclarator" &&
+                def.node.init !== null)) {
+                return;
+            }
+
+            /*
+             * The alias has been declared and not assigned: check it was
+             * assigned later in the same scope.
+             */
+            if (!variable.references.some(reference => {
+                const write = reference.writeExpr;
+
+                return (
+                    reference.from === scope &&
+                    write && write.type === "ThisExpression" &&
+                    write.parent.operator === "="
+                );
+            })) {
+                variable.defs.map(def => def.node).forEach(node => {
+                    reportBadAssignment(node, alias);
+                });
+            }
+        }
+
+        /**
+         * Check each alias to ensure that is was assinged to the correct value.
+         * @returns {void}
+         */
+        function ensureWasAssigned() {
+            const scope = context.getScope();
+
+            aliases.forEach(alias => {
+                checkWasAssigned(alias, scope);
+            });
+        }
+
+        return {
+            "Program:exit": ensureWasAssigned,
+            "FunctionExpression:exit": ensureWasAssigned,
+            "FunctionDeclaration:exit": ensureWasAssigned,
+
+            VariableDeclarator(node) {
+                const id = node.id;
+                const isDestructuring =
+                    id.type === "ArrayPattern" || id.type === "ObjectPattern";
+
+                if (node.init !== null && !isDestructuring) {
+                    checkAssignment(node, id.name, node.init);
+                }
+            },
+
+            AssignmentExpression(node) {
+                if (node.left.type === "Identifier") {
+                    checkAssignment(node, node.left.name, node.right);
+                }
+            }
+        };
+
+    }
+};

node_modules/eslint/lib/rules/constructor-super.js

@@ -0,0 +1,397 @@
+/**
+ * @fileoverview A rule to verify `super()` callings in constructor.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether a given code path segment is reachable or not.
+ *
+ * @param {CodePathSegment} segment - A code path segment to check.
+ * @returns {boolean} `true` if the segment is reachable.
+ */
+function isReachable(segment) {
+    return segment.reachable;
+}
+
+/**
+ * Checks whether or not a given node is a constructor.
+ * @param {ASTNode} node - A node to check. This node type is one of
+ *   `Program`, `FunctionDeclaration`, `FunctionExpression`, and
+ *   `ArrowFunctionExpression`.
+ * @returns {boolean} `true` if the node is a constructor.
+ */
+function isConstructorFunction(node) {
+    return (
+        node.type === "FunctionExpression" &&
+        node.parent.type === "MethodDefinition" &&
+        node.parent.kind === "constructor"
+    );
+}
+
+/**
+ * Checks whether a given node can be a constructor or not.
+ *
+ * @param {ASTNode} node - A node to check.
+ * @returns {boolean} `true` if the node can be a constructor.
+ */
+function isPossibleConstructor(node) {
+    if (!node) {
+        return false;
+    }
+
+    switch (node.type) {
+        case "ClassExpression":
+        case "FunctionExpression":
+        case "ThisExpression":
+        case "MemberExpression":
+        case "CallExpression":
+        case "NewExpression":
+        case "YieldExpression":
+        case "TaggedTemplateExpression":
+        case "MetaProperty":
+            return true;
+
+        case "Identifier":
+            return node.name !== "undefined";
+
+        case "AssignmentExpression":
+            return isPossibleConstructor(node.right);
+
+        case "LogicalExpression":
+            return (
+                isPossibleConstructor(node.left) ||
+                isPossibleConstructor(node.right)
+            );
+
+        case "ConditionalExpression":
+            return (
+                isPossibleConstructor(node.alternate) ||
+                isPossibleConstructor(node.consequent)
+            );
+
+        case "SequenceExpression": {
+            const lastExpression = node.expressions[node.expressions.length - 1];
+
+            return isPossibleConstructor(lastExpression);
+        }
+
+        default:
+            return false;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "require `super()` calls in constructors",
+            category: "ECMAScript 6",
+            recommended: true,
+            url: "https://eslint.org/docs/rules/constructor-super"
+        },
+
+        schema: [],
+
+        messages: {
+            missingSome: "Lacked a call of 'super()' in some code paths.",
+            missingAll: "Expected to call 'super()'.",
+
+            duplicate: "Unexpected duplicate 'super()'.",
+            badSuper: "Unexpected 'super()' because 'super' is not a constructor.",
+            unexpected: "Unexpected 'super()'."
+        }
+    },
+
+    create(context) {
+
+        /*
+         * {{hasExtends: boolean, scope: Scope, codePath: CodePath}[]}
+         * Information for each constructor.
+         * - upper:      Information of the upper constructor.
+         * - hasExtends: A flag which shows whether own class has a valid `extends`
+         *               part.
+         * - scope:      The scope of own class.
+         * - codePath:   The code path object of the constructor.
+         */
+        let funcInfo = null;
+
+        /*
+         * {Map<string, {calledInSomePaths: boolean, calledInEveryPaths: boolean}>}
+         * Information for each code path segment.
+         * - calledInSomePaths:  A flag of be called `super()` in some code paths.
+         * - calledInEveryPaths: A flag of be called `super()` in all code paths.
+         * - validNodes:
+         */
+        let segInfoMap = Object.create(null);
+
+        /**
+         * Gets the flag which shows `super()` is called in some paths.
+         * @param {CodePathSegment} segment - A code path segment to get.
+         * @returns {boolean} The flag which shows `super()` is called in some paths
+         */
+        function isCalledInSomePath(segment) {
+            return segment.reachable && segInfoMap[segment.id].calledInSomePaths;
+        }
+
+        /**
+         * Gets the flag which shows `super()` is called in all paths.
+         * @param {CodePathSegment} segment - A code path segment to get.
+         * @returns {boolean} The flag which shows `super()` is called in all paths.
+         */
+        function isCalledInEveryPath(segment) {
+
+            /*
+             * If specific segment is the looped segment of the current segment,
+             * skip the segment.
+             * If not skipped, this never becomes true after a loop.
+             */
+            if (segment.nextSegments.length === 1 &&
+                segment.nextSegments[0].isLoopedPrevSegment(segment)
+            ) {
+                return true;
+            }
+            return segment.reachable && segInfoMap[segment.id].calledInEveryPaths;
+        }
+
+        return {
+
+            /**
+             * Stacks a constructor information.
+             * @param {CodePath} codePath - A code path which was started.
+             * @param {ASTNode} node - The current node.
+             * @returns {void}
+             */
+            onCodePathStart(codePath, node) {
+                if (isConstructorFunction(node)) {
+
+                    // Class > ClassBody > MethodDefinition > FunctionExpression
+                    const classNode = node.parent.parent.parent;
+                    const superClass = classNode.superClass;
+
+                    funcInfo = {
+                        upper: funcInfo,
+                        isConstructor: true,
+                        hasExtends: Boolean(superClass),
+                        superIsConstructor: isPossibleConstructor(superClass),
+                        codePath
+                    };
+                } else {
+                    funcInfo = {
+                        upper: funcInfo,
+                        isConstructor: false,
+                        hasExtends: false,
+                        superIsConstructor: false,
+                        codePath
+                    };
+                }
+            },
+
+            /**
+             * Pops a constructor information.
+             * And reports if `super()` lacked.
+             * @param {CodePath} codePath - A code path which was ended.
+             * @param {ASTNode} node - The current node.
+             * @returns {void}
+             */
+            onCodePathEnd(codePath, node) {
+                const hasExtends = funcInfo.hasExtends;
+
+                // Pop.
+                funcInfo = funcInfo.upper;
+
+                if (!hasExtends) {
+                    return;
+                }
+
+                // Reports if `super()` lacked.
+                const segments = codePath.returnedSegments;
+                const calledInEveryPaths = segments.every(isCalledInEveryPath);
+                const calledInSomePaths = segments.some(isCalledInSomePath);
+
+                if (!calledInEveryPaths) {
+                    context.report({
+                        messageId: calledInSomePaths
+                            ? "missingSome"
+                            : "missingAll",
+                        node: node.parent
+                    });
+                }
+            },
+
+            /**
+             * Initialize information of a given code path segment.
+             * @param {CodePathSegment} segment - A code path segment to initialize.
+             * @returns {void}
+             */
+            onCodePathSegmentStart(segment) {
+                if (!(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends)) {
+                    return;
+                }
+
+                // Initialize info.
+                const info = segInfoMap[segment.id] = {
+                    calledInSomePaths: false,
+                    calledInEveryPaths: false,
+                    validNodes: []
+                };
+
+                // When there are previous segments, aggregates these.
+                const prevSegments = segment.prevSegments;
+
+                if (prevSegments.length > 0) {
+                    info.calledInSomePaths = prevSegments.some(isCalledInSomePath);
+                    info.calledInEveryPaths = prevSegments.every(isCalledInEveryPath);
+                }
+            },
+
+            /**
+             * Update information of the code path segment when a code path was
+             * looped.
+             * @param {CodePathSegment} fromSegment - The code path segment of the
+             *      end of a loop.
+             * @param {CodePathSegment} toSegment - A code path segment of the head
+             *      of a loop.
+             * @returns {void}
+             */
+            onCodePathSegmentLoop(fromSegment, toSegment) {
+                if (!(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends)) {
+                    return;
+                }
+
+                // Update information inside of the loop.
+                const isRealLoop = toSegment.prevSegments.length >= 2;
+
+                funcInfo.codePath.traverseSegments(
+                    { first: toSegment, last: fromSegment },
+                    segment => {
+                        const info = segInfoMap[segment.id];
+                        const prevSegments = segment.prevSegments;
+
+                        // Updates flags.
+                        info.calledInSomePaths = prevSegments.some(isCalledInSomePath);
+                        info.calledInEveryPaths = prevSegments.every(isCalledInEveryPath);
+
+                        // If flags become true anew, reports the valid nodes.
+                        if (info.calledInSomePaths || isRealLoop) {
+                            const nodes = info.validNodes;
+
+                            info.validNodes = [];
+
+                            for (let i = 0; i < nodes.length; ++i) {
+                                const node = nodes[i];
+
+                                context.report({
+                                    messageId: "duplicate",
+                                    node
+                                });
+                            }
+                        }
+                    }
+                );
+            },
+
+            /**
+             * Checks for a call of `super()`.
+             * @param {ASTNode} node - A CallExpression node to check.
+             * @returns {void}
+             */
+            "CallExpression:exit"(node) {
+                if (!(funcInfo && funcInfo.isConstructor)) {
+                    return;
+                }
+
+                // Skips except `super()`.
+                if (node.callee.type !== "Super") {
+                    return;
+                }
+
+                // Reports if needed.
+                if (funcInfo.hasExtends) {
+                    const segments = funcInfo.codePath.currentSegments;
+                    let duplicate = false;
+                    let info = null;
+
+                    for (let i = 0; i < segments.length; ++i) {
+                        const segment = segments[i];
+
+                        if (segment.reachable) {
+                            info = segInfoMap[segment.id];
+
+                            duplicate = duplicate || info.calledInSomePaths;
+                            info.calledInSomePaths = info.calledInEveryPaths = true;
+                        }
+                    }
+
+                    if (info) {
+                        if (duplicate) {
+                            context.report({
+                                messageId: "duplicate",
+                                node
+                            });
+                        } else if (!funcInfo.superIsConstructor) {
+                            context.report({
+                                messageId: "badSuper",
+                                node
+                            });
+                        } else {
+                            info.validNodes.push(node);
+                        }
+                    }
+                } else if (funcInfo.codePath.currentSegments.some(isReachable)) {
+                    context.report({
+                        messageId: "unexpected",
+                        node
+                    });
+                }
+            },
+
+            /**
+             * Set the mark to the returned path as `super()` was called.
+             * @param {ASTNode} node - A ReturnStatement node to check.
+             * @returns {void}
+             */
+            ReturnStatement(node) {
+                if (!(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends)) {
+                    return;
+                }
+
+                // Skips if no argument.
+                if (!node.argument) {
+                    return;
+                }
+
+                // Returning argument is a substitute of 'super()'.
+                const segments = funcInfo.codePath.currentSegments;
+
+                for (let i = 0; i < segments.length; ++i) {
+                    const segment = segments[i];
+
+                    if (segment.reachable) {
+                        const info = segInfoMap[segment.id];
+
+                        info.calledInSomePaths = info.calledInEveryPaths = true;
+                    }
+                }
+            },
+
+            /**
+             * Resets state.
+             * @returns {void}
+             */
+            "Program:exit"() {
+                segInfoMap = Object.create(null);
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/curly.js

@@ -0,0 +1,382 @@
+/**
+ * @fileoverview Rule to flag statements without curly braces
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce consistent brace style for all control statements",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/curly"
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["all"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["multi", "multi-line", "multi-or-nest"]
+                        },
+                        {
+                            enum: ["consistent"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        fixable: "code",
+
+        messages: {
+            missingCurlyAfter: "Expected { after '{{name}}'.",
+            missingCurlyAfterCondition: "Expected { after '{{name}}' condition.",
+            unexpectedCurlyAfter: "Unnecessary { after '{{name}}'.",
+            unexpectedCurlyAfterCondition: "Unnecessary { after '{{name}}' condition."
+        }
+    },
+
+    create(context) {
+
+        const multiOnly = (context.options[0] === "multi");
+        const multiLine = (context.options[0] === "multi-line");
+        const multiOrNest = (context.options[0] === "multi-or-nest");
+        const consistent = (context.options[1] === "consistent");
+
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Determines if a given node is a one-liner that's on the same line as it's preceding code.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if the node is a one-liner that's on the same line as it's preceding code.
+         * @private
+         */
+        function isCollapsedOneLiner(node) {
+            const before = sourceCode.getTokenBefore(node);
+            const last = sourceCode.getLastToken(node);
+            const lastExcludingSemicolon = astUtils.isSemicolonToken(last) ? sourceCode.getTokenBefore(last) : last;
+
+            return before.loc.start.line === lastExcludingSemicolon.loc.end.line;
+        }
+
+        /**
+         * Determines if a given node is a one-liner.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if the node is a one-liner.
+         * @private
+         */
+        function isOneLiner(node) {
+            const first = sourceCode.getFirstToken(node),
+                last = sourceCode.getLastToken(node);
+
+            return first.loc.start.line === last.loc.end.line;
+        }
+
+        /**
+         * Checks if the given token is an `else` token or not.
+         *
+         * @param {Token} token - The token to check.
+         * @returns {boolean} `true` if the token is an `else` token.
+         */
+        function isElseKeywordToken(token) {
+            return token.value === "else" && token.type === "Keyword";
+        }
+
+        /**
+         * Gets the `else` keyword token of a given `IfStatement` node.
+         * @param {ASTNode} node - A `IfStatement` node to get.
+         * @returns {Token} The `else` keyword token.
+         */
+        function getElseKeyword(node) {
+            return node.alternate && sourceCode.getFirstTokenBetween(node.consequent, node.alternate, isElseKeywordToken);
+        }
+
+        /**
+         * Checks a given IfStatement node requires braces of the consequent chunk.
+         * This returns `true` when below:
+         *
+         * 1. The given node has the `alternate` node.
+         * 2. There is a `IfStatement` which doesn't have `alternate` node in the
+         *    trailing statement chain of the `consequent` node.
+         *
+         * @param {ASTNode} node - A IfStatement node to check.
+         * @returns {boolean} `true` if the node requires braces of the consequent chunk.
+         */
+        function requiresBraceOfConsequent(node) {
+            if (node.alternate && node.consequent.type === "BlockStatement") {
+                if (node.consequent.body.length >= 2) {
+                    return true;
+                }
+
+                for (
+                    let currentNode = node.consequent.body[0];
+                    currentNode;
+                    currentNode = astUtils.getTrailingStatement(currentNode)
+                ) {
+                    if (currentNode.type === "IfStatement" && !currentNode.alternate) {
+                        return true;
+                    }
+                }
+            }
+
+            return false;
+        }
+
+        /**
+         * Determines if a semicolon needs to be inserted after removing a set of curly brackets, in order to avoid a SyntaxError.
+         * @param {Token} closingBracket The } token
+         * @returns {boolean} `true` if a semicolon needs to be inserted after the last statement in the block.
+         */
+        function needsSemicolon(closingBracket) {
+            const tokenBefore = sourceCode.getTokenBefore(closingBracket);
+            const tokenAfter = sourceCode.getTokenAfter(closingBracket);
+            const lastBlockNode = sourceCode.getNodeByRangeIndex(tokenBefore.range[0]);
+
+            if (astUtils.isSemicolonToken(tokenBefore)) {
+
+                // If the last statement already has a semicolon, don't add another one.
+                return false;
+            }
+
+            if (!tokenAfter) {
+
+                // If there are no statements after this block, there is no need to add a semicolon.
+                return false;
+            }
+
+            if (lastBlockNode.type === "BlockStatement" && lastBlockNode.parent.type !== "FunctionExpression" && lastBlockNode.parent.type !== "ArrowFunctionExpression") {
+
+                /*
+                 * If the last node surrounded by curly brackets is a BlockStatement (other than a FunctionExpression or an ArrowFunctionExpression),
+                 * don't insert a semicolon. Otherwise, the semicolon would be parsed as a separate statement, which would cause
+                 * a SyntaxError if it was followed by `else`.
+                 */
+                return false;
+            }
+
+            if (tokenBefore.loc.end.line === tokenAfter.loc.start.line) {
+
+                // If the next token is on the same line, insert a semicolon.
+                return true;
+            }
+
+            if (/^[([/`+-]/.test(tokenAfter.value)) {
+
+                // If the next token starts with a character that would disrupt ASI, insert a semicolon.
+                return true;
+            }
+
+            if (tokenBefore.type === "Punctuator" && (tokenBefore.value === "++" || tokenBefore.value === "--")) {
+
+                // If the last token is ++ or --, insert a semicolon to avoid disrupting ASI.
+                return true;
+            }
+
+            // Otherwise, do not insert a semicolon.
+            return false;
+        }
+
+        /**
+         * Prepares to check the body of a node to see if it's a block statement.
+         * @param {ASTNode} node The node to report if there's a problem.
+         * @param {ASTNode} body The body node to check for blocks.
+         * @param {string} name The name to report if there's a problem.
+         * @param {{ condition: boolean }} opts Options to pass to the report functions
+         * @returns {Object} a prepared check object, with "actual", "expected", "check" properties.
+         *   "actual" will be `true` or `false` whether the body is already a block statement.
+         *   "expected" will be `true` or `false` if the body should be a block statement or not, or
+         *   `null` if it doesn't matter, depending on the rule options. It can be modified to change
+         *   the final behavior of "check".
+         *   "check" will be a function reporting appropriate problems depending on the other
+         *   properties.
+         */
+        function prepareCheck(node, body, name, opts) {
+            const hasBlock = (body.type === "BlockStatement");
+            let expected = null;
+
+            if (node.type === "IfStatement" && node.consequent === body && requiresBraceOfConsequent(node)) {
+                expected = true;
+            } else if (multiOnly) {
+                if (hasBlock && body.body.length === 1) {
+                    expected = false;
+                }
+            } else if (multiLine) {
+                if (!isCollapsedOneLiner(body)) {
+                    expected = true;
+                }
+            } else if (multiOrNest) {
+                if (hasBlock && body.body.length === 1 && isOneLiner(body.body[0])) {
+                    const leadingComments = sourceCode.getCommentsBefore(body.body[0]);
+
+                    expected = leadingComments.length > 0;
+                } else if (!isOneLiner(body)) {
+                    expected = true;
+                }
+            } else {
+                expected = true;
+            }
+
+            return {
+                actual: hasBlock,
+                expected,
+                check() {
+                    if (this.expected !== null && this.expected !== this.actual) {
+                        if (this.expected) {
+                            context.report({
+                                node,
+                                loc: (name !== "else" ? node : getElseKeyword(node)).loc.start,
+                                messageId: opts && opts.condition ? "missingCurlyAfterCondition" : "missingCurlyAfter",
+                                data: {
+                                    name
+                                },
+                                fix: fixer => fixer.replaceText(body, `{${sourceCode.getText(body)}}`)
+                            });
+                        } else {
+                            context.report({
+                                node,
+                                loc: (name !== "else" ? node : getElseKeyword(node)).loc.start,
+                                messageId: opts && opts.condition ? "unexpectedCurlyAfterCondition" : "unexpectedCurlyAfter",
+                                data: {
+                                    name
+                                },
+                                fix(fixer) {
+
+                                    /*
+                                     * `do while` expressions sometimes need a space to be inserted after `do`.
+                                     * e.g. `do{foo()} while (bar)` should be corrected to `do foo() while (bar)`
+                                     */
+                                    const needsPrecedingSpace = node.type === "DoWhileStatement" &&
+                                        sourceCode.getTokenBefore(body).range[1] === body.range[0] &&
+                                        !astUtils.canTokensBeAdjacent("do", sourceCode.getFirstToken(body, { skip: 1 }));
+
+                                    const openingBracket = sourceCode.getFirstToken(body);
+                                    const closingBracket = sourceCode.getLastToken(body);
+                                    const lastTokenInBlock = sourceCode.getTokenBefore(closingBracket);
+
+                                    if (needsSemicolon(closingBracket)) {
+
+                                        /*
+                                         * If removing braces would cause a SyntaxError due to multiple statements on the same line (or
+                                         * change the semantics of the code due to ASI), don't perform a fix.
+                                         */
+                                        return null;
+                                    }
+
+                                    const resultingBodyText = sourceCode.getText().slice(openingBracket.range[1], lastTokenInBlock.range[0]) +
+                                        sourceCode.getText(lastTokenInBlock) +
+                                        sourceCode.getText().slice(lastTokenInBlock.range[1], closingBracket.range[0]);
+
+                                    return fixer.replaceText(body, (needsPrecedingSpace ? " " : "") + resultingBodyText);
+                                }
+                            });
+                        }
+                    }
+                }
+            };
+        }
+
+        /**
+         * Prepares to check the bodies of a "if", "else if" and "else" chain.
+         * @param {ASTNode} node The first IfStatement node of the chain.
+         * @returns {Object[]} prepared checks for each body of the chain. See `prepareCheck` for more
+         *   information.
+         */
+        function prepareIfChecks(node) {
+            const preparedChecks = [];
+
+            for (let currentNode = node; currentNode; currentNode = currentNode.alternate) {
+                preparedChecks.push(prepareCheck(currentNode, currentNode.consequent, "if", { condition: true }));
+                if (currentNode.alternate && currentNode.alternate.type !== "IfStatement") {
+                    preparedChecks.push(prepareCheck(currentNode, currentNode.alternate, "else"));
+                    break;
+                }
+            }
+
+            if (consistent) {
+
+                /*
+                 * If any node should have or already have braces, make sure they
+                 * all have braces.
+                 * If all nodes shouldn't have braces, make sure they don't.
+                 */
+                const expected = preparedChecks.some(preparedCheck => {
+                    if (preparedCheck.expected !== null) {
+                        return preparedCheck.expected;
+                    }
+                    return preparedCheck.actual;
+                });
+
+                preparedChecks.forEach(preparedCheck => {
+                    preparedCheck.expected = expected;
+                });
+            }
+
+            return preparedChecks;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            IfStatement(node) {
+                if (node.parent.type !== "IfStatement") {
+                    prepareIfChecks(node).forEach(preparedCheck => {
+                        preparedCheck.check();
+                    });
+                }
+            },
+
+            WhileStatement(node) {
+                prepareCheck(node, node.body, "while", { condition: true }).check();
+            },
+
+            DoWhileStatement(node) {
+                prepareCheck(node, node.body, "do").check();
+            },
+
+            ForStatement(node) {
+                prepareCheck(node, node.body, "for", { condition: true }).check();
+            },
+
+            ForInStatement(node) {
+                prepareCheck(node, node.body, "for-in").check();
+            },
+
+            ForOfStatement(node) {
+                prepareCheck(node, node.body, "for-of").check();
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/default-case.js

@@ -0,0 +1,97 @@
+/**
+ * @fileoverview require default case in switch statements
+ * @author Aliaksei Shytkin
+ */
+"use strict";
+
+const DEFAULT_COMMENT_PATTERN = /^no default$/i;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require `default` cases in `switch` statements",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/default-case"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                commentPattern: {
+                    type: "string"
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            missingDefaultCase: "Expected a default case."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const commentPattern = options.commentPattern
+            ? new RegExp(options.commentPattern)
+            : DEFAULT_COMMENT_PATTERN;
+
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Shortcut to get last element of array
+         * @param  {*[]} collection Array
+         * @returns {*} Last element
+         */
+        function last(collection) {
+            return collection[collection.length - 1];
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            SwitchStatement(node) {
+
+                if (!node.cases.length) {
+
+                    /*
+                     * skip check of empty switch because there is no easy way
+                     * to extract comments inside it now
+                     */
+                    return;
+                }
+
+                const hasDefault = node.cases.some(v => v.test === null);
+
+                if (!hasDefault) {
+
+                    let comment;
+
+                    const lastCase = last(node.cases);
+                    const comments = sourceCode.getCommentsAfter(lastCase);
+
+                    if (comments.length) {
+                        comment = last(comments);
+                    }
+
+                    if (!comment || !commentPattern.test(comment.value.trim())) {
+                        context.report({ node, messageId: "missingDefaultCase" });
+                    }
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/dot-location.js

@@ -0,0 +1,96 @@
+/**
+ * @fileoverview Validates newlines before and after dots
+ * @author Greg Cochard
+ */
+
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent newlines before and after dots",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/dot-location"
+        },
+
+        schema: [
+            {
+                enum: ["object", "property"]
+            }
+        ],
+
+        fixable: "code",
+
+        messages: {
+            expectedDotAfterObject: "Expected dot to be on same line as object.",
+            expectedDotBeforeProperty: "Expected dot to be on same line as property."
+        }
+    },
+
+    create(context) {
+
+        const config = context.options[0];
+
+        // default to onObject if no preference is passed
+        const onObject = config === "object" || !config;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Reports if the dot between object and property is on the correct loccation.
+         * @param {ASTNode} obj The object owning the property.
+         * @param {ASTNode} prop The property of the object.
+         * @param {ASTNode} node The corresponding node of the token.
+         * @returns {void}
+         */
+        function checkDotLocation(obj, prop, node) {
+            const dot = sourceCode.getTokenBefore(prop);
+            const textBeforeDot = sourceCode.getText().slice(obj.range[1], dot.range[0]);
+            const textAfterDot = sourceCode.getText().slice(dot.range[1], prop.range[0]);
+
+            if (dot.type === "Punctuator" && dot.value === ".") {
+                if (onObject) {
+                    if (!astUtils.isTokenOnSameLine(obj, dot)) {
+                        const neededTextAfterObj = astUtils.isDecimalInteger(obj) ? " " : "";
+
+                        context.report({
+                            node,
+                            loc: dot.loc.start,
+                            messageId: "expectedDotAfterObject",
+                            fix: fixer => fixer.replaceTextRange([obj.range[1], prop.range[0]], `${neededTextAfterObj}.${textBeforeDot}${textAfterDot}`)
+                        });
+                    }
+                } else if (!astUtils.isTokenOnSameLine(dot, prop)) {
+                    context.report({
+                        node,
+                        loc: dot.loc.start,
+                        messageId: "expectedDotBeforeProperty",
+                        fix: fixer => fixer.replaceTextRange([obj.range[1], prop.range[0]], `${textBeforeDot}${textAfterDot}.`)
+                    });
+                }
+            }
+        }
+
+        /**
+         * Checks the spacing of the dot within a member expression.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkNode(node) {
+            checkDotLocation(node.object, node.property, node);
+        }
+
+        return {
+            MemberExpression: checkNode
+        };
+    }
+};

node_modules/eslint/lib/rules/dot-notation.js

@@ -0,0 +1,167 @@
+/**
+ * @fileoverview Rule to warn about using dot notation instead of square bracket notation when possible.
+ * @author Josh Perez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const validIdentifier = /^[a-zA-Z_$][a-zA-Z0-9_$]*$/;
+const keywords = require("../util/keywords");
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce dot notation whenever possible",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/dot-notation"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowKeywords: {
+                        type: "boolean"
+                    },
+                    allowPattern: {
+                        type: "string"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code",
+
+        messages: {
+            useDot: "[{{key}}] is better written in dot notation.",
+            useBrackets: ".{{key}} is a syntax error."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const allowKeywords = options.allowKeywords === void 0 || !!options.allowKeywords;
+        const sourceCode = context.getSourceCode();
+
+        let allowPattern;
+
+        if (options.allowPattern) {
+            allowPattern = new RegExp(options.allowPattern);
+        }
+
+        /**
+         * Check if the property is valid dot notation
+         * @param {ASTNode} node The dot notation node
+         * @param {string} value Value which is to be checked
+         * @returns {void}
+         */
+        function checkComputedProperty(node, value) {
+            if (
+                validIdentifier.test(value) &&
+                (allowKeywords || keywords.indexOf(String(value)) === -1) &&
+                !(allowPattern && allowPattern.test(value))
+            ) {
+                const formattedValue = node.property.type === "Literal" ? JSON.stringify(value) : `\`${value}\``;
+
+                context.report({
+                    node: node.property,
+                    messageId: "useDot",
+                    data: {
+                        key: formattedValue
+                    },
+                    fix(fixer) {
+                        const leftBracket = sourceCode.getTokenAfter(node.object, astUtils.isOpeningBracketToken);
+                        const rightBracket = sourceCode.getLastToken(node);
+
+                        if (sourceCode.getFirstTokenBetween(leftBracket, rightBracket, { includeComments: true, filter: astUtils.isCommentToken })) {
+
+                            // Don't perform any fixes if there are comments inside the brackets.
+                            return null;
+                        }
+
+                        const tokenAfterProperty = sourceCode.getTokenAfter(rightBracket);
+                        const needsSpaceAfterProperty = tokenAfterProperty &&
+                            rightBracket.range[1] === tokenAfterProperty.range[0] &&
+                            !astUtils.canTokensBeAdjacent(String(value), tokenAfterProperty);
+
+                        const textBeforeDot = astUtils.isDecimalInteger(node.object) ? " " : "";
+                        const textAfterProperty = needsSpaceAfterProperty ? " " : "";
+
+                        return fixer.replaceTextRange(
+                            [leftBracket.range[0], rightBracket.range[1]],
+                            `${textBeforeDot}.${value}${textAfterProperty}`
+                        );
+                    }
+                });
+            }
+        }
+
+        return {
+            MemberExpression(node) {
+                if (
+                    node.computed &&
+                    node.property.type === "Literal"
+                ) {
+                    checkComputedProperty(node, node.property.value);
+                }
+                if (
+                    node.computed &&
+                    node.property.type === "TemplateLiteral" &&
+                    node.property.expressions.length === 0
+                ) {
+                    checkComputedProperty(node, node.property.quasis[0].value.cooked);
+                }
+                if (
+                    !allowKeywords &&
+                    !node.computed &&
+                    keywords.indexOf(String(node.property.name)) !== -1
+                ) {
+                    context.report({
+                        node: node.property,
+                        messageId: "useBrackets",
+                        data: {
+                            key: node.property.name
+                        },
+                        fix(fixer) {
+                            const dot = sourceCode.getTokenBefore(node.property);
+                            const textAfterDot = sourceCode.text.slice(dot.range[1], node.property.range[0]);
+
+                            if (textAfterDot.trim()) {
+
+                                // Don't perform any fixes if there are comments between the dot and the property name.
+                                return null;
+                            }
+
+                            if (node.object.type === "Identifier" && node.object.name === "let") {
+
+                                /*
+                                 * A statement that starts with `let[` is parsed as a destructuring variable declaration, not
+                                 * a MemberExpression.
+                                 */
+                                return null;
+                            }
+
+                            return fixer.replaceTextRange(
+                                [dot.range[0], node.property.range[1]],
+                                `[${textAfterDot}"${node.property.name}"]`
+                            );
+                        }
+                    });
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/eol-last.js

@@ -0,0 +1,112 @@
+/**
+ * @fileoverview Require or disallow newline at the end of files
+ * @author Nodeca Team <https://github.com/nodeca>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "require or disallow newline at the end of files",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/eol-last"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never", "unix", "windows"]
+            }
+        ],
+
+        messages: {
+            missing: "Newline required at end of file but not found.",
+            unexpected: "Newline not allowed at end of file."
+        }
+    },
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: function checkBadEOF(node) {
+                const sourceCode = context.getSourceCode(),
+                    src = sourceCode.getText(),
+                    location = {
+                        column: lodash.last(sourceCode.lines).length,
+                        line: sourceCode.lines.length
+                    },
+                    LF = "\n",
+                    CRLF = `\r${LF}`,
+                    endsWithNewline = lodash.endsWith(src, LF);
+
+                /*
+                 * Empty source is always valid: No content in file so we don't
+                 * need to lint for a newline on the last line of content.
+                 */
+                if (!src.length) {
+                    return;
+                }
+
+                let mode = context.options[0] || "always",
+                    appendCRLF = false;
+
+                if (mode === "unix") {
+
+                    // `"unix"` should behave exactly as `"always"`
+                    mode = "always";
+                }
+                if (mode === "windows") {
+
+                    // `"windows"` should behave exactly as `"always"`, but append CRLF in the fixer for backwards compatibility
+                    mode = "always";
+                    appendCRLF = true;
+                }
+                if (mode === "always" && !endsWithNewline) {
+
+                    // File is not newline-terminated, but should be
+                    context.report({
+                        node,
+                        loc: location,
+                        messageId: "missing",
+                        fix(fixer) {
+                            return fixer.insertTextAfterRange([0, src.length], appendCRLF ? CRLF : LF);
+                        }
+                    });
+                } else if (mode === "never" && endsWithNewline) {
+
+                    // File is newline-terminated, but shouldn't be
+                    context.report({
+                        node,
+                        loc: location,
+                        messageId: "unexpected",
+                        fix(fixer) {
+                            const finalEOLs = /(?:\r?\n)+$/,
+                                match = finalEOLs.exec(sourceCode.text),
+                                start = match.index,
+                                end = sourceCode.text.length;
+
+                            return fixer.replaceTextRange([start, end], "");
+                        }
+                    });
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/eqeqeq.js

@@ -0,0 +1,187 @@
+/**
+ * @fileoverview Rule to flag statements that use != and == instead of !== and ===
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require the use of `===` and `!==`",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/eqeqeq"
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                null: {
+                                    enum: ["always", "never", "ignore"]
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    additionalItems: false
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["smart", "allow-null"]
+                        }
+                    ],
+                    additionalItems: false
+                }
+            ]
+        },
+
+        fixable: "code",
+
+        messages: {
+            unexpected: "Expected '{{expectedOperator}}' and instead saw '{{actualOperator}}'."
+        }
+    },
+
+    create(context) {
+        const config = context.options[0] || "always";
+        const options = context.options[1] || {};
+        const sourceCode = context.getSourceCode();
+
+        const nullOption = (config === "always")
+            ? options.null || "always"
+            : "ignore";
+        const enforceRuleForNull = (nullOption === "always");
+        const enforceInverseRuleForNull = (nullOption === "never");
+
+        /**
+         * Checks if an expression is a typeof expression
+         * @param  {ASTNode} node The node to check
+         * @returns {boolean} if the node is a typeof expression
+         */
+        function isTypeOf(node) {
+            return node.type === "UnaryExpression" && node.operator === "typeof";
+        }
+
+        /**
+         * Checks if either operand of a binary expression is a typeof operation
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} if one of the operands is typeof
+         * @private
+         */
+        function isTypeOfBinary(node) {
+            return isTypeOf(node.left) || isTypeOf(node.right);
+        }
+
+        /**
+         * Checks if operands are literals of the same type (via typeof)
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} if operands are of same type
+         * @private
+         */
+        function areLiteralsAndSameType(node) {
+            return node.left.type === "Literal" && node.right.type === "Literal" &&
+                    typeof node.left.value === typeof node.right.value;
+        }
+
+        /**
+         * Checks if one of the operands is a literal null
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} if operands are null
+         * @private
+         */
+        function isNullCheck(node) {
+            return astUtils.isNullLiteral(node.right) || astUtils.isNullLiteral(node.left);
+        }
+
+        /**
+         * Gets the location (line and column) of the binary expression's operator
+         * @param {ASTNode} node The binary expression node to check
+         * @param {string} operator The operator to find
+         * @returns {Object} { line, column } location of operator
+         * @private
+         */
+        function getOperatorLocation(node) {
+            const opToken = sourceCode.getTokenAfter(node.left);
+
+            return { line: opToken.loc.start.line, column: opToken.loc.start.column };
+        }
+
+        /**
+         * Reports a message for this rule.
+         * @param {ASTNode} node The binary expression node that was checked
+         * @param {string} expectedOperator The operator that was expected (either '==', '!=', '===', or '!==')
+         * @returns {void}
+         * @private
+         */
+        function report(node, expectedOperator) {
+            context.report({
+                node,
+                loc: getOperatorLocation(node),
+                messageId: "unexpected",
+                data: { expectedOperator, actualOperator: node.operator },
+                fix(fixer) {
+
+                    // If the comparison is a `typeof` comparison or both sides are literals with the same type, then it's safe to fix.
+                    if (isTypeOfBinary(node) || areLiteralsAndSameType(node)) {
+                        const operatorToken = sourceCode.getFirstTokenBetween(
+                            node.left,
+                            node.right,
+                            token => token.value === node.operator
+                        );
+
+                        return fixer.replaceText(operatorToken, expectedOperator);
+                    }
+                    return null;
+                }
+            });
+        }
+
+        return {
+            BinaryExpression(node) {
+                const isNull = isNullCheck(node);
+
+                if (node.operator !== "==" && node.operator !== "!=") {
+                    if (enforceInverseRuleForNull && isNull) {
+                        report(node, node.operator.slice(0, -1));
+                    }
+                    return;
+                }
+
+                if (config === "smart" && (isTypeOfBinary(node) ||
+                        areLiteralsAndSameType(node) || isNull)) {
+                    return;
+                }
+
+                if (!enforceRuleForNull && isNull) {
+                    return;
+                }
+
+                report(node, `${node.operator}=`);
+            }
+        };
+
+    }
+};

node_modules/eslint/lib/rules/for-direction.js

@@ -0,0 +1,113 @@
+/**
+ * @fileoverview enforce "for" loop update clause moving the counter in the right direction.(for-direction)
+ * @author Aladdin-ADD<hh_2013@foxmail.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "enforce \"for\" loop update clause moving the counter in the right direction.",
+            category: "Possible Errors",
+            recommended: true,
+            url: "https://eslint.org/docs/rules/for-direction"
+        },
+
+        fixable: null,
+        schema: [],
+
+        messages: {
+            incorrectDirection: "The update clause in this loop moves the variable in the wrong direction."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * report an error.
+         * @param {ASTNode} node the node to report.
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({
+                node,
+                messageId: "incorrectDirection"
+            });
+        }
+
+        /**
+         * check UpdateExpression add/sub the counter
+         * @param {ASTNode} update UpdateExpression to check
+         * @param {string} counter variable name to check
+         * @returns {int} if add return 1, if sub return -1, if nochange, return 0
+         */
+        function getUpdateDirection(update, counter) {
+            if (update.argument.type === "Identifier" && update.argument.name === counter) {
+                if (update.operator === "++") {
+                    return 1;
+                }
+                if (update.operator === "--") {
+                    return -1;
+                }
+            }
+            return 0;
+        }
+
+        /**
+         * check AssignmentExpression add/sub the counter
+         * @param {ASTNode} update AssignmentExpression to check
+         * @param {string} counter variable name to check
+         * @returns {int} if add return 1, if sub return -1, if nochange, return 0
+         */
+        function getAssignmentDirection(update, counter) {
+            if (update.left.name === counter) {
+                if (update.operator === "+=") {
+                    return 1;
+                }
+                if (update.operator === "-=") {
+                    return -1;
+                }
+            }
+            return 0;
+        }
+        return {
+            ForStatement(node) {
+
+                if (node.test && node.test.type === "BinaryExpression" && node.test.left.type === "Identifier" && node.update) {
+                    const counter = node.test.left.name;
+                    const operator = node.test.operator;
+                    const update = node.update;
+
+                    if (operator === "<" || operator === "<=") {
+
+                        // report error if update sub the counter (--, -=)
+                        if (update.type === "UpdateExpression" && getUpdateDirection(update, counter) < 0) {
+                            report(node);
+                        }
+
+                        if (update.type === "AssignmentExpression" && getAssignmentDirection(update, counter) < 0) {
+                            report(node);
+                        }
+                    } else if (operator === ">" || operator === ">=") {
+
+                        // report error if update add the counter (++, +=)
+                        if (update.type === "UpdateExpression" && getUpdateDirection(update, counter) > 0) {
+                            report(node);
+                        }
+
+                        if (update.type === "AssignmentExpression" && getAssignmentDirection(update, counter) > 0) {
+                            report(node);
+                        }
+                    }
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/func-call-spacing.js

@@ -0,0 +1,168 @@
+/**
+ * @fileoverview Rule to control spacing within function calls
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "require or disallow spacing between function identifiers and their invocations",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/func-call-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["never"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                allowNewlines: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        messages: {
+            unexpected: "Unexpected newline between function name and paren.",
+            missing: "Missing space between function name and paren."
+        }
+    },
+
+    create(context) {
+
+        const never = context.options[0] !== "always";
+        const allowNewlines = !never && context.options[1] && context.options[1].allowNewlines;
+        const sourceCode = context.getSourceCode();
+        const text = sourceCode.getText();
+
+        /**
+         * Check if open space is present in a function name
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkSpacing(node) {
+            const lastToken = sourceCode.getLastToken(node);
+            const lastCalleeToken = sourceCode.getLastToken(node.callee);
+            const parenToken = sourceCode.getFirstTokenBetween(lastCalleeToken, lastToken, astUtils.isOpeningParenToken);
+            const prevToken = parenToken && sourceCode.getTokenBefore(parenToken);
+
+            // Parens in NewExpression are optional
+            if (!(parenToken && parenToken.range[1] < node.range[1])) {
+                return;
+            }
+
+            const textBetweenTokens = text.slice(prevToken.range[1], parenToken.range[0]).replace(/\/\*.*?\*\//g, "");
+            const hasWhitespace = /\s/.test(textBetweenTokens);
+            const hasNewline = hasWhitespace && astUtils.LINEBREAK_MATCHER.test(textBetweenTokens);
+
+            /*
+             * never allowNewlines hasWhitespace hasNewline message
+             * F     F             F             F          Missing space between function name and paren.
+             * F     F             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * F     F             T             T          Unexpected newline between function name and paren.
+             * F     F             T             F          (OK)
+             * F     T             T             F          (OK)
+             * F     T             T             T          (OK)
+             * F     T             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * F     T             F             F          Missing space between function name and paren.
+             * T     T             F             F          (Invalid `never && allowNewlines`)
+             * T     T             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * T     T             T             T          (Invalid `never && allowNewlines`)
+             * T     T             T             F          (Invalid `never && allowNewlines`)
+             * T     F             T             F          Unexpected space between function name and paren.
+             * T     F             T             T          Unexpected space between function name and paren.
+             * T     F             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * T     F             F             F          (OK)
+             *
+             * T                   T                        Unexpected space between function name and paren.
+             * F                   F                        Missing space between function name and paren.
+             * F     F                           T          Unexpected newline between function name and paren.
+             */
+
+            if (never && hasWhitespace) {
+                context.report({
+                    node,
+                    loc: lastCalleeToken.loc.start,
+                    messageId: "unexpected",
+                    fix(fixer) {
+
+                        /*
+                         * Only autofix if there is no newline
+                         * https://github.com/eslint/eslint/issues/7787
+                         */
+                        if (!hasNewline) {
+                            return fixer.removeRange([prevToken.range[1], parenToken.range[0]]);
+                        }
+
+                        return null;
+                    }
+                });
+            } else if (!never && !hasWhitespace) {
+                context.report({
+                    node,
+                    loc: lastCalleeToken.loc.start,
+                    messageId: "missing",
+                    fix(fixer) {
+                        return fixer.insertTextBefore(parenToken, " ");
+                    }
+                });
+            } else if (!never && !allowNewlines && hasNewline) {
+                context.report({
+                    node,
+                    loc: lastCalleeToken.loc.start,
+                    messageId: "unexpected",
+                    fix(fixer) {
+                        return fixer.replaceTextRange([prevToken.range[1], parenToken.range[0]], " ");
+                    }
+                });
+            }
+        }
+
+        return {
+            CallExpression: checkSpacing,
+            NewExpression: checkSpacing
+        };
+
+    }
+};

node_modules/eslint/lib/rules/func-name-matching.js

@@ -0,0 +1,251 @@
+/**
+ * @fileoverview Rule to require function names to match the name of the variable or property to which they are assigned.
+ * @author Annie Zhang, Pavel Strashkin
+ */
+
+"use strict";
+
+//--------------------------------------------------------------------------
+// Requirements
+//--------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+const esutils = require("esutils");
+
+//--------------------------------------------------------------------------
+// Helpers
+//--------------------------------------------------------------------------
+
+/**
+ * Determines if a pattern is `module.exports` or `module["exports"]`
+ * @param {ASTNode} pattern The left side of the AssignmentExpression
+ * @returns {boolean} True if the pattern is `module.exports` or `module["exports"]`
+ */
+function isModuleExports(pattern) {
+    if (pattern.type === "MemberExpression" && pattern.object.type === "Identifier" && pattern.object.name === "module") {
+
+        // module.exports
+        if (pattern.property.type === "Identifier" && pattern.property.name === "exports") {
+            return true;
+        }
+
+        // module["exports"]
+        if (pattern.property.type === "Literal" && pattern.property.value === "exports") {
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * Determines if a string name is a valid identifier
+ * @param {string} name The string to be checked
+ * @param {int} ecmaVersion The ECMAScript version if specified in the parserOptions config
+ * @returns {boolean} True if the string is a valid identifier
+ */
+function isIdentifier(name, ecmaVersion) {
+    if (ecmaVersion >= 6) {
+        return esutils.keyword.isIdentifierES6(name);
+    }
+    return esutils.keyword.isIdentifierES5(name);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const alwaysOrNever = { enum: ["always", "never"] };
+const optionsObject = {
+    type: "object",
+    properties: {
+        considerPropertyDescriptor: {
+            type: "boolean"
+        },
+        includeCommonJSModuleExports: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require function names to match the name of the variable or property to which they are assigned",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/func-name-matching"
+        },
+
+        schema: {
+            anyOf: [{
+                type: "array",
+                additionalItems: false,
+                items: [alwaysOrNever, optionsObject]
+            }, {
+                type: "array",
+                additionalItems: false,
+                items: [optionsObject]
+            }]
+        },
+
+        messages: {
+            matchProperty: "Function name `{{funcName}}` should match property name `{{name}}`",
+            matchVariable: "Function name `{{funcName}}` should match variable name `{{name}}`",
+            notMatchProperty: "Function name `{{funcName}}` should not match property name `{{name}}`",
+            notMatchVariable: "Function name `{{funcName}}` should not match variable name `{{name}}`"
+        }
+    },
+
+    create(context) {
+        const options = (typeof context.options[0] === "object" ? context.options[0] : context.options[1]) || {};
+        const nameMatches = typeof context.options[0] === "string" ? context.options[0] : "always";
+        const considerPropertyDescriptor = options.considerPropertyDescriptor;
+        const includeModuleExports = options.includeCommonJSModuleExports;
+        const ecmaVersion = context.parserOptions && context.parserOptions.ecmaVersion ? context.parserOptions.ecmaVersion : 5;
+
+        /**
+         * Check whether node is a certain CallExpression.
+         * @param {string} objName object name
+         * @param {string} funcName function name
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} `true` if node matches CallExpression
+         */
+        function isPropertyCall(objName, funcName, node) {
+            if (!node) {
+                return false;
+            }
+            return node.type === "CallExpression" &&
+                node.callee.object.name === objName &&
+                node.callee.property.name === funcName;
+        }
+
+        /**
+         * Compares identifiers based on the nameMatches option
+         * @param {string} x the first identifier
+         * @param {string} y the second identifier
+         * @returns {boolean} whether the two identifiers should warn.
+         */
+        function shouldWarn(x, y) {
+            return (nameMatches === "always" && x !== y) || (nameMatches === "never" && x === y);
+        }
+
+        /**
+         * Reports
+         * @param {ASTNode} node The node to report
+         * @param {string} name The variable or property name
+         * @param {string} funcName The function name
+         * @param {boolean} isProp True if the reported node is a property assignment
+         * @returns {void}
+         */
+        function report(node, name, funcName, isProp) {
+            let messageId;
+
+            if (nameMatches === "always" && isProp) {
+                messageId = "matchProperty";
+            } else if (nameMatches === "always") {
+                messageId = "matchVariable";
+            } else if (isProp) {
+                messageId = "notMatchProperty";
+            } else {
+                messageId = "notMatchVariable";
+            }
+            context.report({
+                node,
+                messageId,
+                data: {
+                    name,
+                    funcName
+                }
+            });
+        }
+
+        /**
+         * Determines whether a given node is a string literal
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} `true` if the node is a string literal
+         */
+        function isStringLiteral(node) {
+            return node.type === "Literal" && typeof node.value === "string";
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            VariableDeclarator(node) {
+                if (!node.init || node.init.type !== "FunctionExpression" || node.id.type !== "Identifier") {
+                    return;
+                }
+                if (node.init.id && shouldWarn(node.id.name, node.init.id.name)) {
+                    report(node, node.id.name, node.init.id.name, false);
+                }
+            },
+
+            AssignmentExpression(node) {
+                if (
+                    node.right.type !== "FunctionExpression" ||
+                    (node.left.computed && node.left.property.type !== "Literal") ||
+                    (!includeModuleExports && isModuleExports(node.left)) ||
+                    (node.left.type !== "Identifier" && node.left.type !== "MemberExpression")
+                ) {
+                    return;
+                }
+
+                const isProp = node.left.type === "MemberExpression";
+                const name = isProp ? astUtils.getStaticPropertyName(node.left) : node.left.name;
+
+                if (node.right.id && isIdentifier(name) && shouldWarn(name, node.right.id.name)) {
+                    report(node, name, node.right.id.name, isProp);
+                }
+            },
+
+            Property(node) {
+                if (node.value.type !== "FunctionExpression" || !node.value.id || node.computed && !isStringLiteral(node.key)) {
+                    return;
+                }
+
+                if (node.key.type === "Identifier") {
+                    const functionName = node.value.id.name;
+                    let propertyName = node.key.name;
+
+                    if (considerPropertyDescriptor && propertyName === "value") {
+                        if (isPropertyCall("Object", "defineProperty", node.parent.parent) || isPropertyCall("Reflect", "defineProperty", node.parent.parent)) {
+                            const property = node.parent.parent.arguments[1];
+
+                            if (isStringLiteral(property) && shouldWarn(property.value, functionName)) {
+                                report(node, property.value, functionName, true);
+                            }
+                        } else if (isPropertyCall("Object", "defineProperties", node.parent.parent.parent.parent)) {
+                            propertyName = node.parent.parent.key.name;
+                            if (!node.parent.parent.computed && shouldWarn(propertyName, functionName)) {
+                                report(node, propertyName, functionName, true);
+                            }
+                        } else if (isPropertyCall("Object", "create", node.parent.parent.parent.parent)) {
+                            propertyName = node.parent.parent.key.name;
+                            if (!node.parent.parent.computed && shouldWarn(propertyName, functionName)) {
+                                report(node, propertyName, functionName, true);
+                            }
+                        } else if (shouldWarn(propertyName, functionName)) {
+                            report(node, propertyName, functionName, true);
+                        }
+                    } else if (shouldWarn(propertyName, functionName)) {
+                        report(node, propertyName, functionName, true);
+                    }
+                    return;
+                }
+
+                if (
+                    isStringLiteral(node.key) &&
+                    isIdentifier(node.key.value, ecmaVersion) &&
+                    shouldWarn(node.key.value, node.value.id.name)
+                ) {
+                    report(node, node.key.value, node.value.id.name, true);
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/func-names.js

@@ -0,0 +1,179 @@
+/**
+ * @fileoverview Rule to warn when a function expression does not have a name.
+ * @author Kyle T. Nunery
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+/**
+ * Checks whether or not a given variable is a function name.
+ * @param {eslint-scope.Variable} variable - A variable to check.
+ * @returns {boolean} `true` if the variable is a function name.
+ */
+function isFunctionName(variable) {
+    return variable && variable.defs[0].type === "FunctionName";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require or disallow named `function` expressions",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/func-names"
+        },
+
+        schema: {
+            definitions: {
+                value: {
+                    enum: [
+                        "always",
+                        "as-needed",
+                        "never"
+                    ]
+                }
+            },
+            items: [
+                {
+                    $ref: "#/definitions/value"
+                },
+                {
+                    type: "object",
+                    properties: {
+                        generators: {
+                            $ref: "#/definitions/value"
+                        }
+                    },
+                    additionalProperties: false
+                }
+            ]
+        },
+
+        messages: {
+            unnamed: "Unexpected unnamed {{name}}.",
+            named: "Unexpected named {{name}}."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Returns the config option for the given node.
+         * @param {ASTNode} node - A node to get the config for.
+         * @returns {string} The config option.
+         */
+        function getConfigForNode(node) {
+            if (
+                node.generator &&
+                context.options.length > 1 &&
+                context.options[1].generators
+            ) {
+                return context.options[1].generators;
+            }
+
+            return context.options[0] || "always";
+        }
+
+        /**
+         * Determines whether the current FunctionExpression node is a get, set, or
+         * shorthand method in an object literal or a class.
+         * @param {ASTNode} node - A node to check.
+         * @returns {boolean} True if the node is a get, set, or shorthand method.
+         */
+        function isObjectOrClassMethod(node) {
+            const parent = node.parent;
+
+            return (parent.type === "MethodDefinition" || (
+                parent.type === "Property" && (
+                    parent.method ||
+                    parent.kind === "get" ||
+                    parent.kind === "set"
+                )
+            ));
+        }
+
+        /**
+         * Determines whether the current FunctionExpression node has a name that would be
+         * inferred from context in a conforming ES6 environment.
+         * @param {ASTNode} node - A node to check.
+         * @returns {boolean} True if the node would have a name assigned automatically.
+         */
+        function hasInferredName(node) {
+            const parent = node.parent;
+
+            return isObjectOrClassMethod(node) ||
+                (parent.type === "VariableDeclarator" && parent.id.type === "Identifier" && parent.init === node) ||
+                (parent.type === "Property" && parent.value === node) ||
+                (parent.type === "AssignmentExpression" && parent.left.type === "Identifier" && parent.right === node) ||
+                (parent.type === "ExportDefaultDeclaration" && parent.declaration === node) ||
+                (parent.type === "AssignmentPattern" && parent.right === node);
+        }
+
+        /**
+         * Reports that an unnamed function should be named
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @returns {void}
+         */
+        function reportUnexpectedUnnamedFunction(node) {
+            context.report({
+                node,
+                messageId: "unnamed",
+                data: { name: astUtils.getFunctionNameWithKind(node) }
+            });
+        }
+
+        /**
+         * Reports that a named function should be unnamed
+         * @param {ASTNode} node - The node to report in the event of an error.
+         * @returns {void}
+         */
+        function reportUnexpectedNamedFunction(node) {
+            context.report({
+                node,
+                messageId: "named",
+                data: { name: astUtils.getFunctionNameWithKind(node) }
+            });
+        }
+
+        return {
+            "FunctionExpression:exit"(node) {
+
+                // Skip recursive functions.
+                const nameVar = context.getDeclaredVariables(node)[0];
+
+                if (isFunctionName(nameVar) && nameVar.references.length > 0) {
+                    return;
+                }
+
+                const hasName = Boolean(node.id && node.id.name);
+                const config = getConfigForNode(node);
+
+                if (config === "never") {
+                    if (hasName) {
+                        reportUnexpectedNamedFunction(node);
+                    }
+                } else if (config === "as-needed") {
+                    if (!hasName && !hasInferredName(node)) {
+                        reportUnexpectedUnnamedFunction(node);
+                    }
+                } else {
+                    if (!hasName && !isObjectOrClassMethod(node)) {
+                        reportUnexpectedUnnamedFunction(node);
+                    }
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/func-style.js

@@ -0,0 +1,97 @@
+/**
+ * @fileoverview Rule to enforce a particular function style
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce the consistent use of either `function` declarations or expressions",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/func-style"
+        },
+
+        schema: [
+            {
+                enum: ["declaration", "expression"]
+            },
+            {
+                type: "object",
+                properties: {
+                    allowArrowFunctions: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            expression: "Expected a function expression.",
+            declaration: "Expected a function declaration."
+        }
+    },
+
+    create(context) {
+
+        const style = context.options[0],
+            allowArrowFunctions = context.options[1] && context.options[1].allowArrowFunctions === true,
+            enforceDeclarations = (style === "declaration"),
+            stack = [];
+
+        const nodesToCheck = {
+            FunctionDeclaration(node) {
+                stack.push(false);
+
+                if (!enforceDeclarations && node.parent.type !== "ExportDefaultDeclaration") {
+                    context.report({ node, messageId: "expression" });
+                }
+            },
+            "FunctionDeclaration:exit"() {
+                stack.pop();
+            },
+
+            FunctionExpression(node) {
+                stack.push(false);
+
+                if (enforceDeclarations && node.parent.type === "VariableDeclarator") {
+                    context.report({ node: node.parent, messageId: "declaration" });
+                }
+            },
+            "FunctionExpression:exit"() {
+                stack.pop();
+            },
+
+            ThisExpression() {
+                if (stack.length > 0) {
+                    stack[stack.length - 1] = true;
+                }
+            }
+        };
+
+        if (!allowArrowFunctions) {
+            nodesToCheck.ArrowFunctionExpression = function() {
+                stack.push(false);
+            };
+
+            nodesToCheck["ArrowFunctionExpression:exit"] = function(node) {
+                const hasThisExpr = stack.pop();
+
+                if (enforceDeclarations && !hasThisExpr && node.parent.type === "VariableDeclarator") {
+                    context.report({ node: node.parent, messageId: "declaration" });
+                }
+            };
+        }
+
+        return nodesToCheck;
+
+    }
+};

node_modules/eslint/lib/rules/function-paren-newline.js

@@ -0,0 +1,233 @@
+/**
+ * @fileoverview enforce consistent line breaks inside function parentheses
+ * @author Teddy Katz
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent line breaks inside function parentheses",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/function-paren-newline"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["always", "never", "consistent", "multiline"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            minItems: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            expectedBefore: "Expected newline before ')'.",
+            expectedAfter: "Expected newline after '('.",
+            unexpectedBefore: "Unexpected newline before '('.",
+            unexpectedAfter: "Unexpected newline after ')'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+        const rawOption = context.options[0] || "multiline";
+        const multilineOption = rawOption === "multiline";
+        const consistentOption = rawOption === "consistent";
+        let minItems;
+
+        if (typeof rawOption === "object") {
+            minItems = rawOption.minItems;
+        } else if (rawOption === "always") {
+            minItems = 0;
+        } else if (rawOption === "never") {
+            minItems = Infinity;
+        } else {
+            minItems = null;
+        }
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Determines whether there should be newlines inside function parens
+         * @param {ASTNode[]} elements The arguments or parameters in the list
+         * @param {boolean} hasLeftNewline `true` if the left paren has a newline in the current code.
+         * @returns {boolean} `true` if there should be newlines inside the function parens
+         */
+        function shouldHaveNewlines(elements, hasLeftNewline) {
+            if (multilineOption) {
+                return elements.some((element, index) => index !== elements.length - 1 && element.loc.end.line !== elements[index + 1].loc.start.line);
+            }
+            if (consistentOption) {
+                return hasLeftNewline;
+            }
+            return elements.length >= minItems;
+        }
+
+        /**
+         * Validates a list of arguments or parameters
+         * @param {Object} parens An object with keys `leftParen` for the left paren token, and `rightParen` for the right paren token
+         * @param {ASTNode[]} elements The arguments or parameters in the list
+         * @returns {void}
+         */
+        function validateParens(parens, elements) {
+            const leftParen = parens.leftParen;
+            const rightParen = parens.rightParen;
+            const tokenAfterLeftParen = sourceCode.getTokenAfter(leftParen);
+            const tokenBeforeRightParen = sourceCode.getTokenBefore(rightParen);
+            const hasLeftNewline = !astUtils.isTokenOnSameLine(leftParen, tokenAfterLeftParen);
+            const hasRightNewline = !astUtils.isTokenOnSameLine(tokenBeforeRightParen, rightParen);
+            const needsNewlines = shouldHaveNewlines(elements, hasLeftNewline);
+
+            if (hasLeftNewline && !needsNewlines) {
+                context.report({
+                    node: leftParen,
+                    messageId: "unexpectedAfter",
+                    fix(fixer) {
+                        return sourceCode.getText().slice(leftParen.range[1], tokenAfterLeftParen.range[0]).trim()
+
+                            // If there is a comment between the ( and the first element, don't do a fix.
+                            ? null
+                            : fixer.removeRange([leftParen.range[1], tokenAfterLeftParen.range[0]]);
+                    }
+                });
+            } else if (!hasLeftNewline && needsNewlines) {
+                context.report({
+                    node: leftParen,
+                    messageId: "expectedAfter",
+                    fix: fixer => fixer.insertTextAfter(leftParen, "\n")
+                });
+            }
+
+            if (hasRightNewline && !needsNewlines) {
+                context.report({
+                    node: rightParen,
+                    messageId: "unexpectedBefore",
+                    fix(fixer) {
+                        return sourceCode.getText().slice(tokenBeforeRightParen.range[1], rightParen.range[0]).trim()
+
+                            // If there is a comment between the last element and the ), don't do a fix.
+                            ? null
+                            : fixer.removeRange([tokenBeforeRightParen.range[1], rightParen.range[0]]);
+                    }
+                });
+            } else if (!hasRightNewline && needsNewlines) {
+                context.report({
+                    node: rightParen,
+                    messageId: "expectedBefore",
+                    fix: fixer => fixer.insertTextBefore(rightParen, "\n")
+                });
+            }
+        }
+
+        /**
+         * Gets the left paren and right paren tokens of a node.
+         * @param {ASTNode} node The node with parens
+         * @returns {Object} An object with keys `leftParen` for the left paren token, and `rightParen` for the right paren token.
+         * Can also return `null` if an expression has no parens (e.g. a NewExpression with no arguments, or an ArrowFunctionExpression
+         * with a single parameter)
+         */
+        function getParenTokens(node) {
+            switch (node.type) {
+                case "NewExpression":
+                    if (!node.arguments.length && !(
+                        astUtils.isOpeningParenToken(sourceCode.getLastToken(node, { skip: 1 })) &&
+                        astUtils.isClosingParenToken(sourceCode.getLastToken(node))
+                    )) {
+
+                        // If the NewExpression does not have parens (e.g. `new Foo`), return null.
+                        return null;
+                    }
+
+                    // falls through
+
+                case "CallExpression":
+                    return {
+                        leftParen: sourceCode.getTokenAfter(node.callee, astUtils.isOpeningParenToken),
+                        rightParen: sourceCode.getLastToken(node)
+                    };
+
+                case "FunctionDeclaration":
+                case "FunctionExpression": {
+                    const leftParen = sourceCode.getFirstToken(node, astUtils.isOpeningParenToken);
+                    const rightParen = node.params.length
+                        ? sourceCode.getTokenAfter(node.params[node.params.length - 1], astUtils.isClosingParenToken)
+                        : sourceCode.getTokenAfter(leftParen);
+
+                    return { leftParen, rightParen };
+                }
+
+                case "ArrowFunctionExpression": {
+                    const firstToken = sourceCode.getFirstToken(node);
+
+                    if (!astUtils.isOpeningParenToken(firstToken)) {
+
+                        // If the ArrowFunctionExpression has a single param without parens, return null.
+                        return null;
+                    }
+
+                    return {
+                        leftParen: firstToken,
+                        rightParen: sourceCode.getTokenBefore(node.body, astUtils.isClosingParenToken)
+                    };
+                }
+
+                default:
+                    throw new TypeError(`unexpected node with type ${node.type}`);
+            }
+        }
+
+        /**
+         * Validates the parentheses for a node
+         * @param {ASTNode} node The node with parens
+         * @returns {void}
+         */
+        function validateNode(node) {
+            const parens = getParenTokens(node);
+
+            if (parens) {
+                validateParens(parens, astUtils.isFunction(node) ? node.params : node.arguments);
+            }
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            ArrowFunctionExpression: validateNode,
+            CallExpression: validateNode,
+            FunctionDeclaration: validateNode,
+            FunctionExpression: validateNode,
+            NewExpression: validateNode
+        };
+    }
+};

node_modules/eslint/lib/rules/generator-star-spacing.js

@@ -0,0 +1,211 @@
+/**
+ * @fileoverview Rule to check the spacing around the * in generator functions.
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const OVERRIDE_SCHEMA = {
+    oneOf: [
+        {
+            enum: ["before", "after", "both", "neither"]
+        },
+        {
+            type: "object",
+            properties: {
+                before: { type: "boolean" },
+                after: { type: "boolean" }
+            },
+            additionalProperties: false
+        }
+    ]
+};
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent spacing around `*` operators in generator functions",
+            category: "ECMAScript 6",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/generator-star-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["before", "after", "both", "neither"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            before: { type: "boolean" },
+                            after: { type: "boolean" },
+                            named: OVERRIDE_SCHEMA,
+                            anonymous: OVERRIDE_SCHEMA,
+                            method: OVERRIDE_SCHEMA
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            missingBefore: "Missing space before *.",
+            missingAfter: "Missing space after *.",
+            unexpectedBefore: "Unexpected space before *.",
+            unexpectedAfter: "Unexpected space after *."
+        }
+    },
+
+    create(context) {
+
+        const optionDefinitions = {
+            before: { before: true, after: false },
+            after: { before: false, after: true },
+            both: { before: true, after: true },
+            neither: { before: false, after: false }
+        };
+
+        /**
+         * Returns resolved option definitions based on an option and defaults
+         *
+         * @param {any} option - The option object or string value
+         * @param {Object} defaults - The defaults to use if options are not present
+         * @returns {Object} the resolved object definition
+         */
+        function optionToDefinition(option, defaults) {
+            if (!option) {
+                return defaults;
+            }
+
+            return typeof option === "string"
+                ? optionDefinitions[option]
+                : Object.assign({}, defaults, option);
+        }
+
+        const modes = (function(option) {
+            const defaults = optionToDefinition(option, optionDefinitions.before);
+
+            return {
+                named: optionToDefinition(option.named, defaults),
+                anonymous: optionToDefinition(option.anonymous, defaults),
+                method: optionToDefinition(option.method, defaults)
+            };
+        }(context.options[0] || {}));
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Checks if the given token is a star token or not.
+         *
+         * @param {Token} token - The token to check.
+         * @returns {boolean} `true` if the token is a star token.
+         */
+        function isStarToken(token) {
+            return token.value === "*" && token.type === "Punctuator";
+        }
+
+        /**
+         * Gets the generator star token of the given function node.
+         *
+         * @param {ASTNode} node - The function node to get.
+         * @returns {Token} Found star token.
+         */
+        function getStarToken(node) {
+            return sourceCode.getFirstToken(
+                (node.parent.method || node.parent.type === "MethodDefinition") ? node.parent : node,
+                isStarToken
+            );
+        }
+
+        /**
+         * capitalize a given string.
+         * @param {string} str the given string.
+         * @returns {string} the capitalized string.
+         */
+        function capitalize(str) {
+            return str[0].toUpperCase() + str.slice(1);
+        }
+
+        /**
+         * Checks the spacing between two tokens before or after the star token.
+         *
+         * @param {string} kind Either "named", "anonymous", or "method"
+         * @param {string} side Either "before" or "after".
+         * @param {Token} leftToken `function` keyword token if side is "before", or
+         *     star token if side is "after".
+         * @param {Token} rightToken Star token if side is "before", or identifier
+         *     token if side is "after".
+         * @returns {void}
+         */
+        function checkSpacing(kind, side, leftToken, rightToken) {
+            if (!!(rightToken.range[0] - leftToken.range[1]) !== modes[kind][side]) {
+                const after = leftToken.value === "*";
+                const spaceRequired = modes[kind][side];
+                const node = after ? leftToken : rightToken;
+                const messageId = `${spaceRequired ? "missing" : "unexpected"}${capitalize(side)}`;
+
+                context.report({
+                    node,
+                    messageId,
+                    fix(fixer) {
+                        if (spaceRequired) {
+                            if (after) {
+                                return fixer.insertTextAfter(node, " ");
+                            }
+                            return fixer.insertTextBefore(node, " ");
+                        }
+                        return fixer.removeRange([leftToken.range[1], rightToken.range[0]]);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Enforces the spacing around the star if node is a generator function.
+         *
+         * @param {ASTNode} node A function expression or declaration node.
+         * @returns {void}
+         */
+        function checkFunction(node) {
+            if (!node.generator) {
+                return;
+            }
+
+            const starToken = getStarToken(node);
+            const prevToken = sourceCode.getTokenBefore(starToken);
+            const nextToken = sourceCode.getTokenAfter(starToken);
+
+            let kind = "named";
+
+            if (node.parent.type === "MethodDefinition" || (node.parent.type === "Property" && node.parent.method)) {
+                kind = "method";
+            } else if (!node.id) {
+                kind = "anonymous";
+            }
+
+            // Only check before when preceded by `function`|`static` keyword
+            if (!(kind === "method" && starToken === sourceCode.getFirstToken(node.parent))) {
+                checkSpacing(kind, "before", prevToken, starToken);
+            }
+
+            checkSpacing(kind, "after", starToken, nextToken);
+        }
+
+        return {
+            FunctionDeclaration: checkFunction,
+            FunctionExpression: checkFunction
+        };
+
+    }
+};

node_modules/eslint/lib/rules/getter-return.js

@@ -0,0 +1,185 @@
+/**
+ * @fileoverview Enforces that a return statement is present in property getters.
+ * @author Aladdin-ADD(hh_2013@foxmail.com)
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+const TARGET_NODE_TYPE = /^(?:Arrow)?FunctionExpression$/;
+
+/**
+ * Checks a given code path segment is reachable.
+ *
+ * @param {CodePathSegment} segment - A segment to check.
+ * @returns {boolean} `true` if the segment is reachable.
+ */
+function isReachable(segment) {
+    return segment.reachable;
+}
+
+/**
+ * Gets a readable location.
+ *
+ * - FunctionExpression -> the function name or `function` keyword.
+ *
+ * @param {ASTNode} node - A function node to get.
+ * @returns {ASTNode|Token} The node or the token of a location.
+ */
+function getId(node) {
+    return node.id || node;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "enforce `return` statements in getters",
+            category: "Possible Errors",
+            recommended: true,
+            url: "https://eslint.org/docs/rules/getter-return"
+        },
+
+        fixable: null,
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowImplicit: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            expected: "Expected to return a value in {{name}}.",
+            expectedAlways: "Expected {{name}} to always return a value."
+        }
+    },
+
+    create(context) {
+
+        const options = context.options[0] || { allowImplicit: false };
+
+        let funcInfo = {
+            upper: null,
+            codePath: null,
+            hasReturn: false,
+            shouldCheck: false,
+            node: null
+        };
+
+        /**
+         * Checks whether or not the last code path segment is reachable.
+         * Then reports this function if the segment is reachable.
+         *
+         * If the last code path segment is reachable, there are paths which are not
+         * returned or thrown.
+         *
+         * @param {ASTNode} node - A node to check.
+         * @returns {void}
+         */
+        function checkLastSegment(node) {
+            if (funcInfo.shouldCheck &&
+                funcInfo.codePath.currentSegments.some(isReachable)
+            ) {
+                context.report({
+                    node,
+                    loc: getId(node).loc.start,
+                    messageId: funcInfo.hasReturn ? "expectedAlways" : "expected",
+                    data: {
+                        name: astUtils.getFunctionNameWithKind(funcInfo.node)
+                    }
+                });
+            }
+        }
+
+        /**
+         * Checks whether a node means a getter function.
+         * @param {ASTNode} node - a node to check.
+         * @returns {boolean} if node means a getter, return true; else return false.
+         */
+        function isGetter(node) {
+            const parent = node.parent;
+
+            if (TARGET_NODE_TYPE.test(node.type) && node.body.type === "BlockStatement") {
+                if (parent.kind === "get") {
+                    return true;
+                }
+                if (parent.type === "Property" && astUtils.getStaticPropertyName(parent) === "get" && parent.parent.type === "ObjectExpression") {
+
+                    // Object.defineProperty()
+                    if (parent.parent.parent.type === "CallExpression" &&
+                        astUtils.getStaticPropertyName(parent.parent.parent.callee) === "defineProperty") {
+                        return true;
+                    }
+
+                    // Object.defineProperties()
+                    if (parent.parent.parent.type === "Property" &&
+                        parent.parent.parent.parent.type === "ObjectExpression" &&
+                        parent.parent.parent.parent.parent.type === "CallExpression" &&
+                        astUtils.getStaticPropertyName(parent.parent.parent.parent.parent.callee) === "defineProperties") {
+                        return true;
+                    }
+                }
+            }
+            return false;
+        }
+        return {
+
+            // Stacks this function's information.
+            onCodePathStart(codePath, node) {
+                funcInfo = {
+                    upper: funcInfo,
+                    codePath,
+                    hasReturn: false,
+                    shouldCheck: isGetter(node),
+                    node
+                };
+            },
+
+            // Pops this function's information.
+            onCodePathEnd() {
+                funcInfo = funcInfo.upper;
+            },
+
+            // Checks the return statement is valid.
+            ReturnStatement(node) {
+                if (funcInfo.shouldCheck) {
+                    funcInfo.hasReturn = true;
+
+                    // if allowImplicit: false, should also check node.argument
+                    if (!options.allowImplicit && !node.argument) {
+                        context.report({
+                            node,
+                            messageId: "expected",
+                            data: {
+                                name: astUtils.getFunctionNameWithKind(funcInfo.node)
+                            }
+                        });
+                    }
+                }
+            },
+
+            // Reports a given function if the last path is reachable.
+            "FunctionExpression:exit": checkLastSegment,
+            "ArrowFunctionExpression:exit": checkLastSegment
+        };
+    }
+};

node_modules/eslint/lib/rules/global-require.js

@@ -0,0 +1,78 @@
+/**
+ * @fileoverview Rule for disallowing require() outside of the top-level module context
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+const ACCEPTABLE_PARENTS = [
+    "AssignmentExpression",
+    "VariableDeclarator",
+    "MemberExpression",
+    "ExpressionStatement",
+    "CallExpression",
+    "ConditionalExpression",
+    "Program",
+    "VariableDeclaration"
+];
+
+/**
+ * Finds the eslint-scope reference in the given scope.
+ * @param {Object} scope The scope to search.
+ * @param {ASTNode} node The identifier node.
+ * @returns {Reference|null} Returns the found reference or null if none were found.
+ */
+function findReference(scope, node) {
+    const references = scope.references.filter(reference => reference.identifier.range[0] === node.range[0] &&
+            reference.identifier.range[1] === node.range[1]);
+
+    /* istanbul ignore else: correctly returns null */
+    if (references.length === 1) {
+        return references[0];
+    }
+    return null;
+
+}
+
+/**
+ * Checks if the given identifier node is shadowed in the given scope.
+ * @param {Object} scope The current scope.
+ * @param {ASTNode} node The identifier node to check.
+ * @returns {boolean} Whether or not the name is shadowed.
+ */
+function isShadowed(scope, node) {
+    const reference = findReference(scope, node);
+
+    return reference && reference.resolved && reference.resolved.defs.length > 0;
+}
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require `require()` calls to be placed at top-level module scope",
+            category: "Node.js and CommonJS",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/global-require"
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        return {
+            CallExpression(node) {
+                const currentScope = context.getScope();
+
+                if (node.callee.name === "require" && !isShadowed(currentScope, node.callee)) {
+                    const isGoodRequire = context.getAncestors().every(parent => ACCEPTABLE_PARENTS.indexOf(parent.type) > -1);
+
+                    if (!isGoodRequire) {
+                        context.report({ node, message: "Unexpected require()." });
+                    }
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/guard-for-in.js

@@ -0,0 +1,73 @@
+/**
+ * @fileoverview Rule to flag for-in loops without if statements inside
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require `for-in` loops to include an `if` statement",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/guard-for-in"
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        return {
+
+            ForInStatement(node) {
+                const body = node.body;
+
+                // empty statement
+                if (body.type === "EmptyStatement") {
+                    return;
+                }
+
+                // if statement
+                if (body.type === "IfStatement") {
+                    return;
+                }
+
+                // empty block
+                if (body.type === "BlockStatement" && body.body.length === 0) {
+                    return;
+                }
+
+                // block with just if statement
+                if (body.type === "BlockStatement" && body.body.length === 1 && body.body[0].type === "IfStatement") {
+                    return;
+                }
+
+                // block that starts with if statement
+                if (body.type === "BlockStatement" && body.body.length >= 1 && body.body[0].type === "IfStatement") {
+                    const i = body.body[0];
+
+                    // ... whose consequent is a continue
+                    if (i.consequent.type === "ContinueStatement") {
+                        return;
+                    }
+
+                    // ... whose consequent is a block that contains only a continue
+                    if (i.consequent.type === "BlockStatement" && i.consequent.body.length === 1 && i.consequent.body[0].type === "ContinueStatement") {
+                        return;
+                    }
+                }
+
+                context.report({ node, message: "The body of a for-in should be wrapped in an if statement to filter unwanted properties from the prototype." });
+            }
+        };
+
+    }
+};

node_modules/eslint/lib/rules/handle-callback-err.js

@@ -0,0 +1,92 @@
+/**
+ * @fileoverview Ensure handling of errors when we know they exist.
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require error handling in callbacks",
+            category: "Node.js and CommonJS",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/handle-callback-err"
+        },
+
+        schema: [
+            {
+                type: "string"
+            }
+        ]
+    },
+
+    create(context) {
+
+        const errorArgument = context.options[0] || "err";
+
+        /**
+         * Checks if the given argument should be interpreted as a regexp pattern.
+         * @param {string} stringToCheck The string which should be checked.
+         * @returns {boolean} Whether or not the string should be interpreted as a pattern.
+         */
+        function isPattern(stringToCheck) {
+            const firstChar = stringToCheck[0];
+
+            return firstChar === "^";
+        }
+
+        /**
+         * Checks if the given name matches the configured error argument.
+         * @param {string} name The name which should be compared.
+         * @returns {boolean} Whether or not the given name matches the configured error variable name.
+         */
+        function matchesConfiguredErrorName(name) {
+            if (isPattern(errorArgument)) {
+                const regexp = new RegExp(errorArgument);
+
+                return regexp.test(name);
+            }
+            return name === errorArgument;
+        }
+
+        /**
+         * Get the parameters of a given function scope.
+         * @param {Object} scope The function scope.
+         * @returns {array} All parameters of the given scope.
+         */
+        function getParameters(scope) {
+            return scope.variables.filter(variable => variable.defs[0] && variable.defs[0].type === "Parameter");
+        }
+
+        /**
+         * Check to see if we're handling the error object properly.
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         */
+        function checkForError(node) {
+            const scope = context.getScope(),
+                parameters = getParameters(scope),
+                firstParameter = parameters[0];
+
+            if (firstParameter && matchesConfiguredErrorName(firstParameter.name)) {
+                if (firstParameter.references.length === 0) {
+                    context.report({ node, message: "Expected error to be handled." });
+                }
+            }
+        }
+
+        return {
+            FunctionDeclaration: checkForError,
+            FunctionExpression: checkForError,
+            ArrowFunctionExpression: checkForError
+        };
+
+    }
+};

node_modules/eslint/lib/rules/id-blacklist.js

@@ -0,0 +1,124 @@
+/**
+ * @fileoverview Rule that warns when identifier names that are
+ * blacklisted in the configuration are used.
+ * @author Keith Cirkel (http://keithcirkel.co.uk)
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "disallow specified identifiers",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/id-blacklist"
+        },
+
+        schema: {
+            type: "array",
+            items: {
+                type: "string"
+            },
+            uniqueItems: true
+        }
+    },
+
+    create(context) {
+
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const blacklist = context.options;
+
+
+        /**
+         * Checks if a string matches the provided pattern
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is a match
+         * @private
+         */
+        function isInvalid(name) {
+            return blacklist.indexOf(name) !== -1;
+        }
+
+        /**
+         * Verifies if we should report an error or not based on the effective
+         * parent node and the identifier name.
+         * @param {ASTNode} effectiveParent The effective parent node of the node to be reported
+         * @param {string} name The identifier name of the identifier node
+         * @returns {boolean} whether an error should be reported or not
+         */
+        function shouldReport(effectiveParent, name) {
+            return effectiveParent.type !== "CallExpression" &&
+                effectiveParent.type !== "NewExpression" &&
+                isInvalid(name);
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+            context.report({
+                node,
+                message: "Identifier '{{name}}' is blacklisted.",
+                data: {
+                    name: node.name
+                }
+            });
+        }
+
+        return {
+
+            Identifier(node) {
+                const name = node.name,
+                    effectiveParent = (node.parent.type === "MemberExpression") ? node.parent.parent : node.parent;
+
+                // MemberExpressions get special rules
+                if (node.parent.type === "MemberExpression") {
+
+                    // Always check object names
+                    if (node.parent.object.type === "Identifier" &&
+                        node.parent.object.name === node.name) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+
+                        // Report AssignmentExpressions only if they are the left side of the assignment
+                    } else if (effectiveParent.type === "AssignmentExpression" &&
+                        (effectiveParent.right.type !== "MemberExpression" ||
+                        effectiveParent.left.type === "MemberExpression" &&
+                        effectiveParent.left.property.name === node.name)) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+                    }
+
+                // Properties have their own rules
+                } else if (node.parent.type === "Property") {
+
+                    if (shouldReport(effectiveParent, name)) {
+                        report(node);
+                    }
+
+                // Report anything that is a match and not a CallExpression
+                } else if (shouldReport(effectiveParent, name)) {
+                    report(node);
+                }
+            }
+
+        };
+
+    }
+};

node_modules/eslint/lib/rules/id-length.js

@@ -0,0 +1,119 @@
+/**
+ * @fileoverview Rule that warns when identifier names are shorter or longer
+ * than the values provided in configuration.
+ * @author Burak Yigit Kaya aka BYK
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce minimum and maximum identifier lengths",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/id-length"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    min: {
+                        type: "number"
+                    },
+                    max: {
+                        type: "number"
+                    },
+                    exceptions: {
+                        type: "array",
+                        uniqueItems: true,
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    properties: {
+                        enum: ["always", "never"]
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const minLength = typeof options.min !== "undefined" ? options.min : 2;
+        const maxLength = typeof options.max !== "undefined" ? options.max : Infinity;
+        const properties = options.properties !== "never";
+        const exceptions = (options.exceptions ? options.exceptions : [])
+            .reduce((obj, item) => {
+                obj[item] = true;
+
+                return obj;
+            }, {});
+
+        const SUPPORTED_EXPRESSIONS = {
+            MemberExpression: properties && function(parent) {
+                return !parent.computed && (
+
+                    // regular property assignment
+                    (parent.parent.left === parent && parent.parent.type === "AssignmentExpression" ||
+
+                    // or the last identifier in an ObjectPattern destructuring
+                    parent.parent.type === "Property" && parent.parent.value === parent &&
+                    parent.parent.parent.type === "ObjectPattern" && parent.parent.parent.parent.left === parent.parent.parent)
+                );
+            },
+            AssignmentPattern(parent, node) {
+                return parent.left === node;
+            },
+            VariableDeclarator(parent, node) {
+                return parent.id === node;
+            },
+            Property: properties && function(parent, node) {
+                return parent.key === node;
+            },
+            ImportDefaultSpecifier: true,
+            RestElement: true,
+            FunctionExpression: true,
+            ArrowFunctionExpression: true,
+            ClassDeclaration: true,
+            FunctionDeclaration: true,
+            MethodDefinition: true,
+            CatchClause: true
+        };
+
+        return {
+            Identifier(node) {
+                const name = node.name;
+                const parent = node.parent;
+
+                const isShort = name.length < minLength;
+                const isLong = name.length > maxLength;
+
+                if (!(isShort || isLong) || exceptions[name]) {
+                    return; // Nothing to report
+                }
+
+                const isValidExpression = SUPPORTED_EXPRESSIONS[parent.type];
+
+                if (isValidExpression && (isValidExpression === true || isValidExpression(parent, node))) {
+                    context.report({
+                        node,
+                        message: isShort
+                            ? "Identifier name '{{name}}' is too short (< {{min}})."
+                            : "Identifier name '{{name}}' is too long (> {{max}}).",
+                        data: { name, min: minLength, max: maxLength }
+                    });
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/id-match.js

@@ -0,0 +1,219 @@
+/**
+ * @fileoverview Rule to flag non-matching identifiers
+ * @author Matthieu Larcher
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require identifiers to match a specified regular expression",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/id-match"
+        },
+
+        schema: [
+            {
+                type: "string"
+            },
+            {
+                type: "object",
+                properties: {
+                    properties: {
+                        type: "boolean"
+                    },
+                    onlyDeclarations: {
+                        type: "boolean"
+                    },
+                    ignoreDestructuring: {
+                        type: "boolean"
+                    }
+                }
+            }
+        ]
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Options
+        //--------------------------------------------------------------------------
+        const pattern = context.options[0] || "^.+$",
+            regexp = new RegExp(pattern);
+
+        const options = context.options[1] || {},
+            properties = !!options.properties,
+            onlyDeclarations = !!options.onlyDeclarations,
+            ignoreDestructuring = !!options.ignoreDestructuring;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // contains reported nodes to avoid reporting twice on destructuring with shorthand notation
+        const reported = new Map();
+        const ALLOWED_PARENT_TYPES = new Set(["CallExpression", "NewExpression"]);
+        const DECLARATION_TYPES = new Set(["FunctionDeclaration", "VariableDeclarator"]);
+        const IMPORT_TYPES = new Set(["ImportSpecifier", "ImportNamespaceSpecifier", "ImportDefaultSpecifier"]);
+
+        /**
+         * Checks if a string matches the provided pattern
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is a match
+         * @private
+         */
+        function isInvalid(name) {
+            return !regexp.test(name);
+        }
+
+        /**
+         * Checks if a parent of a node is an ObjectPattern.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} if the node is inside an ObjectPattern
+         * @private
+         */
+        function isInsideObjectPattern(node) {
+            let { parent } = node;
+
+            while (parent) {
+                if (parent.type === "ObjectPattern") {
+                    return true;
+                }
+
+                parent = parent.parent;
+            }
+
+            return false;
+        }
+
+        /**
+         * Verifies if we should report an error or not based on the effective
+         * parent node and the identifier name.
+         * @param {ASTNode} effectiveParent The effective parent node of the node to be reported
+         * @param {string} name The identifier name of the identifier node
+         * @returns {boolean} whether an error should be reported or not
+         */
+        function shouldReport(effectiveParent, name) {
+            return (!onlyDeclarations || DECLARATION_TYPES.has(effectiveParent.type)) &&
+                !ALLOWED_PARENT_TYPES.has(effectiveParent.type) && isInvalid(name);
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+            if (!reported.has(node)) {
+                context.report({
+                    node,
+                    message: "Identifier '{{name}}' does not match the pattern '{{pattern}}'.",
+                    data: {
+                        name: node.name,
+                        pattern
+                    }
+                });
+                reported.set(node, true);
+            }
+        }
+
+        return {
+
+            Identifier(node) {
+                const name = node.name,
+                    parent = node.parent,
+                    effectiveParent = (parent.type === "MemberExpression") ? parent.parent : parent;
+
+                if (parent.type === "MemberExpression") {
+
+                    if (!properties) {
+                        return;
+                    }
+
+                    // Always check object names
+                    if (parent.object.type === "Identifier" &&
+                        parent.object.name === name) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+
+                    // Report AssignmentExpressions left side's assigned variable id
+                    } else if (effectiveParent.type === "AssignmentExpression" &&
+                        effectiveParent.left.type === "MemberExpression" &&
+                        effectiveParent.left.property.name === node.name) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+
+                    // Report AssignmentExpressions only if they are the left side of the assignment
+                    } else if (effectiveParent.type === "AssignmentExpression" && effectiveParent.right.type !== "MemberExpression") {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+                    }
+
+                /*
+                 * Properties have their own rules, and
+                 * AssignmentPattern nodes can be treated like Properties:
+                 * e.g.: const { no_camelcased = false } = bar;
+                 */
+                } else if (parent.type === "Property" || parent.type === "AssignmentPattern") {
+
+                    if (parent.parent && parent.parent.type === "ObjectPattern") {
+                        if (parent.shorthand && parent.value.left && isInvalid(name)) {
+
+                            report(node);
+                        }
+
+                        const assignmentKeyEqualsValue = parent.key.name === parent.value.name;
+
+                        // prevent checking righthand side of destructured object
+                        if (!assignmentKeyEqualsValue && parent.key === node) {
+                            return;
+                        }
+
+                        const valueIsInvalid = parent.value.name && isInvalid(name);
+
+                        // ignore destructuring if the option is set, unless a new identifier is created
+                        if (valueIsInvalid && !(assignmentKeyEqualsValue && ignoreDestructuring)) {
+                            report(node);
+                        }
+                    }
+
+                    // never check properties or always ignore destructuring
+                    if (!properties || (ignoreDestructuring && isInsideObjectPattern(node))) {
+                        return;
+                    }
+
+                    // don't check right hand side of AssignmentExpression to prevent duplicate warnings
+                    if (parent.right !== node && shouldReport(effectiveParent, name)) {
+                        report(node);
+                    }
+
+                // Check if it's an import specifier
+                } else if (IMPORT_TYPES.has(parent.type)) {
+
+                    // Report only if the local imported identifier is invalid
+                    if (parent.local && parent.local.name === node.name && isInvalid(name)) {
+                        report(node);
+                    }
+
+                // Report anything that is invalid that isn't a CallExpression
+                } else if (shouldReport(effectiveParent, name)) {
+                    report(node);
+                }
+            }
+
+        };
+
+    }
+};

node_modules/eslint/lib/rules/implicit-arrow-linebreak.js

@@ -0,0 +1,91 @@
+/**
+ * @fileoverview enforce the location of arrow function bodies
+ * @author Sharmila Jesupaul
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce the location of arrow function bodies",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/implicit-arrow-linebreak"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["beside", "below"]
+            }
+        ]
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+        /**
+         * Gets the applicable preference for a particular keyword
+         * @returns {string} The applicable option for the keyword, e.g. 'beside'
+         */
+        function getOption() {
+            return context.options[0] || "beside";
+        }
+
+        /**
+         * Validates the location of an arrow function body
+         * @param {ASTNode} node The arrow function body
+         * @param {string} keywordName The applicable keyword name for the arrow function body
+         * @returns {void}
+         */
+        function validateExpression(node) {
+            const option = getOption();
+
+            let tokenBefore = sourceCode.getTokenBefore(node.body);
+            const hasParens = tokenBefore.value === "(";
+
+            if (node.type === "BlockStatement") {
+                return;
+            }
+
+            let fixerTarget = node.body;
+
+            if (hasParens) {
+
+                // Gets the first token before the function body that is not an open paren
+                tokenBefore = sourceCode.getTokenBefore(node.body, token => token.value !== "(");
+                fixerTarget = sourceCode.getTokenAfter(tokenBefore);
+            }
+
+            if (tokenBefore.loc.end.line === fixerTarget.loc.start.line && option === "below") {
+                context.report({
+                    node: fixerTarget,
+                    message: "Expected a linebreak before this expression.",
+                    fix: fixer => fixer.insertTextBefore(fixerTarget, "\n")
+                });
+            } else if (tokenBefore.loc.end.line !== fixerTarget.loc.start.line && option === "beside") {
+                context.report({
+                    node: fixerTarget,
+                    message: "Expected no linebreak before this expression.",
+                    fix: fixer => fixer.replaceTextRange([tokenBefore.range[1], fixerTarget.range[0]], " ")
+                });
+            }
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+        return {
+            ArrowFunctionExpression: node => validateExpression(node)
+        };
+    }
+};

node_modules/eslint/lib/rules/init-declarations.js

@@ -0,0 +1,140 @@
+/**
+ * @fileoverview A rule to control the style of variable initializations.
+ * @author Colin Ihrig
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is a for loop.
+ * @param {ASTNode} block - A node to check.
+ * @returns {boolean} `true` when the node is a for loop.
+ */
+function isForLoop(block) {
+    return block.type === "ForInStatement" ||
+    block.type === "ForOfStatement" ||
+    block.type === "ForStatement";
+}
+
+/**
+ * Checks whether or not a given declarator node has its initializer.
+ * @param {ASTNode} node - A declarator node to check.
+ * @returns {boolean} `true` when the node has its initializer.
+ */
+function isInitialized(node) {
+    const declaration = node.parent;
+    const block = declaration.parent;
+
+    if (isForLoop(block)) {
+        if (block.type === "ForStatement") {
+            return block.init === declaration;
+        }
+        return block.left === declaration;
+    }
+    return Boolean(node.init);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require or disallow initialization in variable declarations",
+            category: "Variables",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/init-declarations"
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["never"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                ignoreForLoopInit: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        }
+    },
+
+    create(context) {
+
+        const MODE_ALWAYS = "always",
+            MODE_NEVER = "never";
+
+        const mode = context.options[0] || MODE_ALWAYS;
+        const params = context.options[1] || {};
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            "VariableDeclaration:exit"(node) {
+
+                const kind = node.kind,
+                    declarations = node.declarations;
+
+                for (let i = 0; i < declarations.length; ++i) {
+                    const declaration = declarations[i],
+                        id = declaration.id,
+                        initialized = isInitialized(declaration),
+                        isIgnoredForLoop = params.ignoreForLoopInit && isForLoop(node.parent);
+
+                    if (id.type !== "Identifier") {
+                        continue;
+                    }
+
+                    if (mode === MODE_ALWAYS && !initialized) {
+                        context.report({
+                            node: declaration,
+                            message: "Variable '{{idName}}' should be initialized on declaration.",
+                            data: {
+                                idName: id.name
+                            }
+                        });
+                    } else if (mode === MODE_NEVER && kind !== "const" && initialized && !isIgnoredForLoop) {
+                        context.report({
+                            node: declaration,
+                            message: "Variable '{{idName}}' should not be initialized on declaration.",
+                            data: {
+                                idName: id.name
+                            }
+                        });
+                    }
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/jsx-quotes.js

@@ -0,0 +1,92 @@
+/**
+ * @fileoverview A rule to ensure consistent quotes used in jsx syntax.
+ * @author Mathias Schreck <https://github.com/lo1tuma>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const QUOTE_SETTINGS = {
+    "prefer-double": {
+        quote: "\"",
+        description: "singlequote",
+        convert(str) {
+            return str.replace(/'/g, "\"");
+        }
+    },
+    "prefer-single": {
+        quote: "'",
+        description: "doublequote",
+        convert(str) {
+            return str.replace(/"/g, "'");
+        }
+    }
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce the consistent use of either double or single quotes in JSX attributes",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/jsx-quotes"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["prefer-single", "prefer-double"]
+            }
+        ]
+    },
+
+    create(context) {
+        const quoteOption = context.options[0] || "prefer-double",
+            setting = QUOTE_SETTINGS[quoteOption];
+
+        /**
+         * Checks if the given string literal node uses the expected quotes
+         * @param {ASTNode} node - A string literal node.
+         * @returns {boolean} Whether or not the string literal used the expected quotes.
+         * @public
+         */
+        function usesExpectedQuotes(node) {
+            return node.value.indexOf(setting.quote) !== -1 || astUtils.isSurroundedBy(node.raw, setting.quote);
+        }
+
+        return {
+            JSXAttribute(node) {
+                const attributeValue = node.value;
+
+                if (attributeValue && astUtils.isStringLiteral(attributeValue) && !usesExpectedQuotes(attributeValue)) {
+                    context.report({
+                        node: attributeValue,
+                        message: "Unexpected usage of {{description}}.",
+                        data: {
+                            description: setting.description
+                        },
+                        fix(fixer) {
+                            return fixer.replaceText(attributeValue, setting.convert(attributeValue.raw));
+                        }
+                    });
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/key-spacing.js

@@ -0,0 +1,644 @@
+/**
+ * @fileoverview Rule to specify spacing of object literal keys and values
+ * @author Brandon Mills
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether a string contains a line terminator as defined in
+ * http://www.ecma-international.org/ecma-262/5.1/#sec-7.3
+ * @param {string} str String to test.
+ * @returns {boolean} True if str contains a line terminator.
+ */
+function containsLineTerminator(str) {
+    return astUtils.LINEBREAK_MATCHER.test(str);
+}
+
+/**
+ * Gets the last element of an array.
+ * @param {Array} arr An array.
+ * @returns {any} Last element of arr.
+ */
+function last(arr) {
+    return arr[arr.length - 1];
+}
+
+/**
+ * Checks whether a node is contained on a single line.
+ * @param {ASTNode} node AST Node being evaluated.
+ * @returns {boolean} True if the node is a single line.
+ */
+function isSingleLine(node) {
+    return (node.loc.end.line === node.loc.start.line);
+}
+
+/**
+ * Initializes a single option property from the configuration with defaults for undefined values
+ * @param {Object} toOptions Object to be initialized
+ * @param {Object} fromOptions Object to be initialized from
+ * @returns {Object} The object with correctly initialized options and values
+ */
+function initOptionProperty(toOptions, fromOptions) {
+    toOptions.mode = fromOptions.mode || "strict";
+
+    // Set value of beforeColon
+    if (typeof fromOptions.beforeColon !== "undefined") {
+        toOptions.beforeColon = +fromOptions.beforeColon;
+    } else {
+        toOptions.beforeColon = 0;
+    }
+
+    // Set value of afterColon
+    if (typeof fromOptions.afterColon !== "undefined") {
+        toOptions.afterColon = +fromOptions.afterColon;
+    } else {
+        toOptions.afterColon = 1;
+    }
+
+    // Set align if exists
+    if (typeof fromOptions.align !== "undefined") {
+        if (typeof fromOptions.align === "object") {
+            toOptions.align = fromOptions.align;
+        } else { // "string"
+            toOptions.align = {
+                on: fromOptions.align,
+                mode: toOptions.mode,
+                beforeColon: toOptions.beforeColon,
+                afterColon: toOptions.afterColon
+            };
+        }
+    }
+
+    return toOptions;
+}
+
+/**
+ * Initializes all the option values (singleLine, multiLine and align) from the configuration with defaults for undefined values
+ * @param {Object} toOptions Object to be initialized
+ * @param {Object} fromOptions Object to be initialized from
+ * @returns {Object} The object with correctly initialized options and values
+ */
+function initOptions(toOptions, fromOptions) {
+    if (typeof fromOptions.align === "object") {
+
+        // Initialize the alignment configuration
+        toOptions.align = initOptionProperty({}, fromOptions.align);
+        toOptions.align.on = fromOptions.align.on || "colon";
+        toOptions.align.mode = fromOptions.align.mode || "strict";
+
+        toOptions.multiLine = initOptionProperty({}, (fromOptions.multiLine || fromOptions));
+        toOptions.singleLine = initOptionProperty({}, (fromOptions.singleLine || fromOptions));
+
+    } else { // string or undefined
+        toOptions.multiLine = initOptionProperty({}, (fromOptions.multiLine || fromOptions));
+        toOptions.singleLine = initOptionProperty({}, (fromOptions.singleLine || fromOptions));
+
+        // If alignment options are defined in multiLine, pull them out into the general align configuration
+        if (toOptions.multiLine.align) {
+            toOptions.align = {
+                on: toOptions.multiLine.align.on,
+                mode: toOptions.multiLine.align.mode || toOptions.multiLine.mode,
+                beforeColon: toOptions.multiLine.align.beforeColon,
+                afterColon: toOptions.multiLine.align.afterColon
+            };
+        }
+    }
+
+    return toOptions;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const messages = {
+    key: "{{error}} space after {{computed}}key '{{key}}'.",
+    value: "{{error}} space before value for {{computed}}key '{{key}}'."
+};
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent spacing between keys and values in object literal properties",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/key-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [{
+            anyOf: [
+                {
+                    type: "object",
+                    properties: {
+                        align: {
+                            anyOf: [
+                                {
+                                    enum: ["colon", "value"]
+                                },
+                                {
+                                    type: "object",
+                                    properties: {
+                                        mode: {
+                                            enum: ["strict", "minimum"]
+                                        },
+                                        on: {
+                                            enum: ["colon", "value"]
+                                        },
+                                        beforeColon: {
+                                            type: "boolean"
+                                        },
+                                        afterColon: {
+                                            type: "boolean"
+                                        }
+                                    },
+                                    additionalProperties: false
+                                }
+                            ]
+                        },
+                        mode: {
+                            enum: ["strict", "minimum"]
+                        },
+                        beforeColon: {
+                            type: "boolean"
+                        },
+                        afterColon: {
+                            type: "boolean"
+                        }
+                    },
+                    additionalProperties: false
+                },
+                {
+                    type: "object",
+                    properties: {
+                        singleLine: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        },
+                        multiLine: {
+                            type: "object",
+                            properties: {
+                                align: {
+                                    anyOf: [
+                                        {
+                                            enum: ["colon", "value"]
+                                        },
+                                        {
+                                            type: "object",
+                                            properties: {
+                                                mode: {
+                                                    enum: ["strict", "minimum"]
+                                                },
+                                                on: {
+                                                    enum: ["colon", "value"]
+                                                },
+                                                beforeColon: {
+                                                    type: "boolean"
+                                                },
+                                                afterColon: {
+                                                    type: "boolean"
+                                                }
+                                            },
+                                            additionalProperties: false
+                                        }
+                                    ]
+                                },
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    },
+                    additionalProperties: false
+                },
+                {
+                    type: "object",
+                    properties: {
+                        singleLine: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        },
+                        multiLine: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        },
+                        align: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                on: {
+                                    enum: ["colon", "value"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    },
+                    additionalProperties: false
+                }
+            ]
+        }]
+    },
+
+    create(context) {
+
+        /**
+         * OPTIONS
+         * "key-spacing": [2, {
+         *     beforeColon: false,
+         *     afterColon: true,
+         *     align: "colon" // Optional, or "value"
+         * }
+         */
+        const options = context.options[0] || {},
+            ruleOptions = initOptions({}, options),
+            multiLineOptions = ruleOptions.multiLine,
+            singleLineOptions = ruleOptions.singleLine,
+            alignmentOptions = ruleOptions.align || null;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Checks whether a property is a member of the property group it follows.
+         * @param {ASTNode} lastMember The last Property known to be in the group.
+         * @param {ASTNode} candidate The next Property that might be in the group.
+         * @returns {boolean} True if the candidate property is part of the group.
+         */
+        function continuesPropertyGroup(lastMember, candidate) {
+            const groupEndLine = lastMember.loc.start.line,
+                candidateStartLine = candidate.loc.start.line;
+
+            if (candidateStartLine - groupEndLine <= 1) {
+                return true;
+            }
+
+            /*
+             * Check that the first comment is adjacent to the end of the group, the
+             * last comment is adjacent to the candidate property, and that successive
+             * comments are adjacent to each other.
+             */
+            const leadingComments = sourceCode.getCommentsBefore(candidate);
+
+            if (
+                leadingComments.length &&
+                leadingComments[0].loc.start.line - groupEndLine <= 1 &&
+                candidateStartLine - last(leadingComments).loc.end.line <= 1
+            ) {
+                for (let i = 1; i < leadingComments.length; i++) {
+                    if (leadingComments[i].loc.start.line - leadingComments[i - 1].loc.end.line > 1) {
+                        return false;
+                    }
+                }
+                return true;
+            }
+
+            return false;
+        }
+
+        /**
+         * Determines if the given property is key-value property.
+         * @param {ASTNode} property Property node to check.
+         * @returns {boolean} Whether the property is a key-value property.
+         */
+        function isKeyValueProperty(property) {
+            return !(
+                (property.method ||
+                property.shorthand ||
+                property.kind !== "init" || property.type !== "Property") // Could be "ExperimentalSpreadProperty" or "SpreadElement"
+            );
+        }
+
+        /**
+         * Starting from the given a node (a property.key node here) looks forward
+         * until it finds the last token before a colon punctuator and returns it.
+         * @param {ASTNode} node The node to start looking from.
+         * @returns {ASTNode} The last token before a colon punctuator.
+         */
+        function getLastTokenBeforeColon(node) {
+            const colonToken = sourceCode.getTokenAfter(node, astUtils.isColonToken);
+
+            return sourceCode.getTokenBefore(colonToken);
+        }
+
+        /**
+         * Starting from the given a node (a property.key node here) looks forward
+         * until it finds the colon punctuator and returns it.
+         * @param {ASTNode} node The node to start looking from.
+         * @returns {ASTNode} The colon punctuator.
+         */
+        function getNextColon(node) {
+            return sourceCode.getTokenAfter(node, astUtils.isColonToken);
+        }
+
+        /**
+         * Gets an object literal property's key as the identifier name or string value.
+         * @param {ASTNode} property Property node whose key to retrieve.
+         * @returns {string} The property's key.
+         */
+        function getKey(property) {
+            const key = property.key;
+
+            if (property.computed) {
+                return sourceCode.getText().slice(key.range[0], key.range[1]);
+            }
+
+            return property.key.name || property.key.value;
+        }
+
+        /**
+         * Reports an appropriately-formatted error if spacing is incorrect on one
+         * side of the colon.
+         * @param {ASTNode} property Key-value pair in an object literal.
+         * @param {string} side Side being verified - either "key" or "value".
+         * @param {string} whitespace Actual whitespace string.
+         * @param {int} expected Expected whitespace length.
+         * @param {string} mode Value of the mode as "strict" or "minimum"
+         * @returns {void}
+         */
+        function report(property, side, whitespace, expected, mode) {
+            const diff = whitespace.length - expected,
+                nextColon = getNextColon(property.key),
+                tokenBeforeColon = sourceCode.getTokenBefore(nextColon, { includeComments: true }),
+                tokenAfterColon = sourceCode.getTokenAfter(nextColon, { includeComments: true }),
+                isKeySide = side === "key",
+                locStart = isKeySide ? tokenBeforeColon.loc.start : tokenAfterColon.loc.start,
+                isExtra = diff > 0,
+                diffAbs = Math.abs(diff),
+                spaces = Array(diffAbs + 1).join(" ");
+
+            if ((
+                diff && mode === "strict" ||
+                diff < 0 && mode === "minimum" ||
+                diff > 0 && !expected && mode === "minimum") &&
+                !(expected && containsLineTerminator(whitespace))
+            ) {
+                let fix;
+
+                if (isExtra) {
+                    let range;
+
+                    // Remove whitespace
+                    if (isKeySide) {
+                        range = [tokenBeforeColon.range[1], tokenBeforeColon.range[1] + diffAbs];
+                    } else {
+                        range = [tokenAfterColon.range[0] - diffAbs, tokenAfterColon.range[0]];
+                    }
+                    fix = function(fixer) {
+                        return fixer.removeRange(range);
+                    };
+                } else {
+
+                    // Add whitespace
+                    if (isKeySide) {
+                        fix = function(fixer) {
+                            return fixer.insertTextAfter(tokenBeforeColon, spaces);
+                        };
+                    } else {
+                        fix = function(fixer) {
+                            return fixer.insertTextBefore(tokenAfterColon, spaces);
+                        };
+                    }
+                }
+
+                context.report({
+                    node: property[side],
+                    loc: locStart,
+                    message: messages[side],
+                    data: {
+                        error: isExtra ? "Extra" : "Missing",
+                        computed: property.computed ? "computed " : "",
+                        key: getKey(property)
+                    },
+                    fix
+                });
+            }
+        }
+
+        /**
+         * Gets the number of characters in a key, including quotes around string
+         * keys and braces around computed property keys.
+         * @param {ASTNode} property Property of on object literal.
+         * @returns {int} Width of the key.
+         */
+        function getKeyWidth(property) {
+            const startToken = sourceCode.getFirstToken(property);
+            const endToken = getLastTokenBeforeColon(property.key);
+
+            return endToken.range[1] - startToken.range[0];
+        }
+
+        /**
+         * Gets the whitespace around the colon in an object literal property.
+         * @param {ASTNode} property Property node from an object literal.
+         * @returns {Object} Whitespace before and after the property's colon.
+         */
+        function getPropertyWhitespace(property) {
+            const whitespace = /(\s*):(\s*)/.exec(sourceCode.getText().slice(
+                property.key.range[1], property.value.range[0]
+            ));
+
+            if (whitespace) {
+                return {
+                    beforeColon: whitespace[1],
+                    afterColon: whitespace[2]
+                };
+            }
+            return null;
+        }
+
+        /**
+         * Creates groups of properties.
+         * @param  {ASTNode} node ObjectExpression node being evaluated.
+         * @returns {Array.<ASTNode[]>} Groups of property AST node lists.
+         */
+        function createGroups(node) {
+            if (node.properties.length === 1) {
+                return [node.properties];
+            }
+
+            return node.properties.reduce((groups, property) => {
+                const currentGroup = last(groups),
+                    prev = last(currentGroup);
+
+                if (!prev || continuesPropertyGroup(prev, property)) {
+                    currentGroup.push(property);
+                } else {
+                    groups.push([property]);
+                }
+
+                return groups;
+            }, [
+                []
+            ]);
+        }
+
+        /**
+         * Verifies correct vertical alignment of a group of properties.
+         * @param {ASTNode[]} properties List of Property AST nodes.
+         * @returns {void}
+         */
+        function verifyGroupAlignment(properties) {
+            const length = properties.length,
+                widths = properties.map(getKeyWidth), // Width of keys, including quotes
+                align = alignmentOptions.on; // "value" or "colon"
+            let targetWidth = Math.max(...widths),
+                beforeColon, afterColon, mode;
+
+            if (alignmentOptions && length > 1) { // When aligning values within a group, use the alignment configuration.
+                beforeColon = alignmentOptions.beforeColon;
+                afterColon = alignmentOptions.afterColon;
+                mode = alignmentOptions.mode;
+            } else {
+                beforeColon = multiLineOptions.beforeColon;
+                afterColon = multiLineOptions.afterColon;
+                mode = alignmentOptions.mode;
+            }
+
+            // Conditionally include one space before or after colon
+            targetWidth += (align === "colon" ? beforeColon : afterColon);
+
+            for (let i = 0; i < length; i++) {
+                const property = properties[i];
+                const whitespace = getPropertyWhitespace(property);
+
+                if (whitespace) { // Object literal getters/setters lack a colon
+                    const width = widths[i];
+
+                    if (align === "value") {
+                        report(property, "key", whitespace.beforeColon, beforeColon, mode);
+                        report(property, "value", whitespace.afterColon, targetWidth - width, mode);
+                    } else { // align = "colon"
+                        report(property, "key", whitespace.beforeColon, targetWidth - width, mode);
+                        report(property, "value", whitespace.afterColon, afterColon, mode);
+                    }
+                }
+            }
+        }
+
+        /**
+         * Verifies vertical alignment, taking into account groups of properties.
+         * @param  {ASTNode} node ObjectExpression node being evaluated.
+         * @returns {void}
+         */
+        function verifyAlignment(node) {
+            createGroups(node).forEach(group => {
+                verifyGroupAlignment(group.filter(isKeyValueProperty));
+            });
+        }
+
+        /**
+         * Verifies spacing of property conforms to specified options.
+         * @param  {ASTNode} node Property node being evaluated.
+         * @param {Object} lineOptions Configured singleLine or multiLine options
+         * @returns {void}
+         */
+        function verifySpacing(node, lineOptions) {
+            const actual = getPropertyWhitespace(node);
+
+            if (actual) { // Object literal getters/setters lack colons
+                report(node, "key", actual.beforeColon, lineOptions.beforeColon, lineOptions.mode);
+                report(node, "value", actual.afterColon, lineOptions.afterColon, lineOptions.mode);
+            }
+        }
+
+        /**
+         * Verifies spacing of each property in a list.
+         * @param  {ASTNode[]} properties List of Property AST nodes.
+         * @returns {void}
+         */
+        function verifyListSpacing(properties) {
+            const length = properties.length;
+
+            for (let i = 0; i < length; i++) {
+                verifySpacing(properties[i], singleLineOptions);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        if (alignmentOptions) { // Verify vertical alignment
+
+            return {
+                ObjectExpression(node) {
+                    if (isSingleLine(node)) {
+                        verifyListSpacing(node.properties.filter(isKeyValueProperty));
+                    } else {
+                        verifyAlignment(node);
+                    }
+                }
+            };
+
+        }
+
+        // Obey beforeColon and afterColon in each property as configured
+        return {
+            Property(node) {
+                verifySpacing(node, isSingleLine(node.parent) ? singleLineOptions : multiLineOptions);
+            }
+        };
+
+
+    }
+};

node_modules/eslint/lib/rules/keyword-spacing.js

@@ -0,0 +1,580 @@
+/**
+ * @fileoverview Rule to enforce spacing before and after keywords.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils"),
+    keywords = require("../util/keywords");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const PREV_TOKEN = /^[)\]}>]$/;
+const NEXT_TOKEN = /^(?:[([{<~!]|\+\+?|--?)$/;
+const PREV_TOKEN_M = /^[)\]}>*]$/;
+const NEXT_TOKEN_M = /^[{*]$/;
+const TEMPLATE_OPEN_PAREN = /\$\{$/;
+const TEMPLATE_CLOSE_PAREN = /^\}/;
+const CHECK_TYPE = /^(?:JSXElement|RegularExpression|String|Template)$/;
+const KEYS = keywords.concat(["as", "async", "await", "from", "get", "let", "of", "set", "yield"]);
+
+// check duplications.
+(function() {
+    KEYS.sort();
+    for (let i = 1; i < KEYS.length; ++i) {
+        if (KEYS[i] === KEYS[i - 1]) {
+            throw new Error(`Duplication was found in the keyword list: ${KEYS[i]}`);
+        }
+    }
+}());
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given token is a "Template" token ends with "${".
+ *
+ * @param {Token} token - A token to check.
+ * @returns {boolean} `true` if the token is a "Template" token ends with "${".
+ */
+function isOpenParenOfTemplate(token) {
+    return token.type === "Template" && TEMPLATE_OPEN_PAREN.test(token.value);
+}
+
+/**
+ * Checks whether or not a given token is a "Template" token starts with "}".
+ *
+ * @param {Token} token - A token to check.
+ * @returns {boolean} `true` if the token is a "Template" token starts with "}".
+ */
+function isCloseParenOfTemplate(token) {
+    return token.type === "Template" && TEMPLATE_CLOSE_PAREN.test(token.value);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent spacing before and after keywords",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/keyword-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: { type: "boolean" },
+                    after: { type: "boolean" },
+                    overrides: {
+                        type: "object",
+                        properties: KEYS.reduce((retv, key) => {
+                            retv[key] = {
+                                type: "object",
+                                properties: {
+                                    before: { type: "boolean" },
+                                    after: { type: "boolean" }
+                                },
+                                additionalProperties: false
+                            };
+                            return retv;
+                        }, {}),
+                        additionalProperties: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Reports a given token if there are not space(s) before the token.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp} pattern - A pattern of the previous token to check.
+         * @returns {void}
+         */
+        function expectSpaceBefore(token, pattern) {
+            const prevToken = sourceCode.getTokenBefore(token);
+
+            if (prevToken &&
+                (CHECK_TYPE.test(prevToken.type) || pattern.test(prevToken.value)) &&
+                !isOpenParenOfTemplate(prevToken) &&
+                astUtils.isTokenOnSameLine(prevToken, token) &&
+                !sourceCode.isSpaceBetweenTokens(prevToken, token)
+            ) {
+                context.report({
+                    loc: token.loc.start,
+                    message: "Expected space(s) before \"{{value}}\".",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.insertTextBefore(token, " ");
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports a given token if there are space(s) before the token.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp} pattern - A pattern of the previous token to check.
+         * @returns {void}
+         */
+        function unexpectSpaceBefore(token, pattern) {
+            const prevToken = sourceCode.getTokenBefore(token);
+
+            if (prevToken &&
+                (CHECK_TYPE.test(prevToken.type) || pattern.test(prevToken.value)) &&
+                !isOpenParenOfTemplate(prevToken) &&
+                astUtils.isTokenOnSameLine(prevToken, token) &&
+                sourceCode.isSpaceBetweenTokens(prevToken, token)
+            ) {
+                context.report({
+                    loc: token.loc.start,
+                    message: "Unexpected space(s) before \"{{value}}\".",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.removeRange([prevToken.range[1], token.range[0]]);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports a given token if there are not space(s) after the token.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp} pattern - A pattern of the next token to check.
+         * @returns {void}
+         */
+        function expectSpaceAfter(token, pattern) {
+            const nextToken = sourceCode.getTokenAfter(token);
+
+            if (nextToken &&
+                (CHECK_TYPE.test(nextToken.type) || pattern.test(nextToken.value)) &&
+                !isCloseParenOfTemplate(nextToken) &&
+                astUtils.isTokenOnSameLine(token, nextToken) &&
+                !sourceCode.isSpaceBetweenTokens(token, nextToken)
+            ) {
+                context.report({
+                    loc: token.loc.start,
+                    message: "Expected space(s) after \"{{value}}\".",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.insertTextAfter(token, " ");
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports a given token if there are space(s) after the token.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp} pattern - A pattern of the next token to check.
+         * @returns {void}
+         */
+        function unexpectSpaceAfter(token, pattern) {
+            const nextToken = sourceCode.getTokenAfter(token);
+
+            if (nextToken &&
+                (CHECK_TYPE.test(nextToken.type) || pattern.test(nextToken.value)) &&
+                !isCloseParenOfTemplate(nextToken) &&
+                astUtils.isTokenOnSameLine(token, nextToken) &&
+                sourceCode.isSpaceBetweenTokens(token, nextToken)
+            ) {
+                context.report({
+                    loc: token.loc.start,
+                    message: "Unexpected space(s) after \"{{value}}\".",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.removeRange([token.range[1], nextToken.range[0]]);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Parses the option object and determines check methods for each keyword.
+         *
+         * @param {Object|undefined} options - The option object to parse.
+         * @returns {Object} - Normalized option object.
+         *      Keys are keywords (there are for every keyword).
+         *      Values are instances of `{"before": function, "after": function}`.
+         */
+        function parseOptions(options) {
+            const before = !options || options.before !== false;
+            const after = !options || options.after !== false;
+            const defaultValue = {
+                before: before ? expectSpaceBefore : unexpectSpaceBefore,
+                after: after ? expectSpaceAfter : unexpectSpaceAfter
+            };
+            const overrides = (options && options.overrides) || {};
+            const retv = Object.create(null);
+
+            for (let i = 0; i < KEYS.length; ++i) {
+                const key = KEYS[i];
+                const override = overrides[key];
+
+                if (override) {
+                    const thisBefore = ("before" in override) ? override.before : before;
+                    const thisAfter = ("after" in override) ? override.after : after;
+
+                    retv[key] = {
+                        before: thisBefore ? expectSpaceBefore : unexpectSpaceBefore,
+                        after: thisAfter ? expectSpaceAfter : unexpectSpaceAfter
+                    };
+                } else {
+                    retv[key] = defaultValue;
+                }
+            }
+
+            return retv;
+        }
+
+        const checkMethodMap = parseOptions(context.options[0]);
+
+        /**
+         * Reports a given token if usage of spacing followed by the token is
+         * invalid.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp|undefined} pattern - Optional. A pattern of the previous
+         *      token to check.
+         * @returns {void}
+         */
+        function checkSpacingBefore(token, pattern) {
+            checkMethodMap[token.value].before(token, pattern || PREV_TOKEN);
+        }
+
+        /**
+         * Reports a given token if usage of spacing preceded by the token is
+         * invalid.
+         *
+         * @param {Token} token - A token to report.
+         * @param {RegExp|undefined} pattern - Optional. A pattern of the next
+         *      token to check.
+         * @returns {void}
+         */
+        function checkSpacingAfter(token, pattern) {
+            checkMethodMap[token.value].after(token, pattern || NEXT_TOKEN);
+        }
+
+        /**
+         * Reports a given token if usage of spacing around the token is invalid.
+         *
+         * @param {Token} token - A token to report.
+         * @returns {void}
+         */
+        function checkSpacingAround(token) {
+            checkSpacingBefore(token);
+            checkSpacingAfter(token);
+        }
+
+        /**
+         * Reports the first token of a given node if the first token is a keyword
+         * and usage of spacing around the token is invalid.
+         *
+         * @param {ASTNode|null} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingAroundFirstToken(node) {
+            const firstToken = node && sourceCode.getFirstToken(node);
+
+            if (firstToken && firstToken.type === "Keyword") {
+                checkSpacingAround(firstToken);
+            }
+        }
+
+        /**
+         * Reports the first token of a given node if the first token is a keyword
+         * and usage of spacing followed by the token is invalid.
+         *
+         * This is used for unary operators (e.g. `typeof`), `function`, and `super`.
+         * Other rules are handling usage of spacing preceded by those keywords.
+         *
+         * @param {ASTNode|null} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingBeforeFirstToken(node) {
+            const firstToken = node && sourceCode.getFirstToken(node);
+
+            if (firstToken && firstToken.type === "Keyword") {
+                checkSpacingBefore(firstToken);
+            }
+        }
+
+        /**
+         * Reports the previous token of a given node if the token is a keyword and
+         * usage of spacing around the token is invalid.
+         *
+         * @param {ASTNode|null} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingAroundTokenBefore(node) {
+            if (node) {
+                const token = sourceCode.getTokenBefore(node, astUtils.isKeywordToken);
+
+                checkSpacingAround(token);
+            }
+        }
+
+        /**
+         * Reports `async` or `function` keywords of a given node if usage of
+         * spacing around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForFunction(node) {
+            const firstToken = node && sourceCode.getFirstToken(node);
+
+            if (firstToken &&
+                ((firstToken.type === "Keyword" && firstToken.value === "function") ||
+                firstToken.value === "async")
+            ) {
+                checkSpacingBefore(firstToken);
+            }
+        }
+
+        /**
+         * Reports `class` and `extends` keywords of a given node if usage of
+         * spacing around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForClass(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.superClass);
+        }
+
+        /**
+         * Reports `if` and `else` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForIfStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.alternate);
+        }
+
+        /**
+         * Reports `try`, `catch`, and `finally` keywords of a given node if usage
+         * of spacing around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForTryStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundFirstToken(node.handler);
+            checkSpacingAroundTokenBefore(node.finalizer);
+        }
+
+        /**
+         * Reports `do` and `while` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForDoWhileStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.test);
+        }
+
+        /**
+         * Reports `for` and `in` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForForInStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.right);
+        }
+
+        /**
+         * Reports `for` and `of` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForForOfStatement(node) {
+            if (node.await) {
+                checkSpacingBefore(sourceCode.getFirstToken(node, 0));
+                checkSpacingAfter(sourceCode.getFirstToken(node, 1));
+            } else {
+                checkSpacingAroundFirstToken(node);
+            }
+            checkSpacingAround(sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken));
+        }
+
+        /**
+         * Reports `import`, `export`, `as`, and `from` keywords of a given node if
+         * usage of spacing around those keywords is invalid.
+         *
+         * This rule handles the `*` token in module declarations.
+         *
+         *     import*as A from "./a"; /*error Expected space(s) after "import".
+         *                               error Expected space(s) before "as".
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForModuleDeclaration(node) {
+            const firstToken = sourceCode.getFirstToken(node);
+
+            checkSpacingBefore(firstToken, PREV_TOKEN_M);
+            checkSpacingAfter(firstToken, NEXT_TOKEN_M);
+
+            if (node.source) {
+                const fromToken = sourceCode.getTokenBefore(node.source);
+
+                checkSpacingBefore(fromToken, PREV_TOKEN_M);
+                checkSpacingAfter(fromToken, NEXT_TOKEN_M);
+            }
+        }
+
+        /**
+         * Reports `as` keyword of a given node if usage of spacing around this
+         * keyword is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForImportNamespaceSpecifier(node) {
+            const asToken = sourceCode.getFirstToken(node, 1);
+
+            checkSpacingBefore(asToken, PREV_TOKEN_M);
+        }
+
+        /**
+         * Reports `static`, `get`, and `set` keywords of a given node if usage of
+         * spacing around those keywords is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForProperty(node) {
+            if (node.static) {
+                checkSpacingAroundFirstToken(node);
+            }
+            if (node.kind === "get" ||
+                node.kind === "set" ||
+                (
+                    (node.method || node.type === "MethodDefinition") &&
+                    node.value.async
+                )
+            ) {
+                const token = sourceCode.getTokenBefore(
+                    node.key,
+                    tok => {
+                        switch (tok.value) {
+                            case "get":
+                            case "set":
+                            case "async":
+                                return true;
+                            default:
+                                return false;
+                        }
+                    }
+                );
+
+                if (!token) {
+                    throw new Error("Failed to find token get, set, or async beside method name");
+                }
+
+
+                checkSpacingAround(token);
+            }
+        }
+
+        /**
+         * Reports `await` keyword of a given node if usage of spacing before
+         * this keyword is invalid.
+         *
+         * @param {ASTNode} node - A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForAwaitExpression(node) {
+            checkSpacingBefore(sourceCode.getFirstToken(node));
+        }
+
+        return {
+
+            // Statements
+            DebuggerStatement: checkSpacingAroundFirstToken,
+            WithStatement: checkSpacingAroundFirstToken,
+
+            // Statements - Control flow
+            BreakStatement: checkSpacingAroundFirstToken,
+            ContinueStatement: checkSpacingAroundFirstToken,
+            ReturnStatement: checkSpacingAroundFirstToken,
+            ThrowStatement: checkSpacingAroundFirstToken,
+            TryStatement: checkSpacingForTryStatement,
+
+            // Statements - Choice
+            IfStatement: checkSpacingForIfStatement,
+            SwitchStatement: checkSpacingAroundFirstToken,
+            SwitchCase: checkSpacingAroundFirstToken,
+
+            // Statements - Loops
+            DoWhileStatement: checkSpacingForDoWhileStatement,
+            ForInStatement: checkSpacingForForInStatement,
+            ForOfStatement: checkSpacingForForOfStatement,
+            ForStatement: checkSpacingAroundFirstToken,
+            WhileStatement: checkSpacingAroundFirstToken,
+
+            // Statements - Declarations
+            ClassDeclaration: checkSpacingForClass,
+            ExportNamedDeclaration: checkSpacingForModuleDeclaration,
+            ExportDefaultDeclaration: checkSpacingAroundFirstToken,
+            ExportAllDeclaration: checkSpacingForModuleDeclaration,
+            FunctionDeclaration: checkSpacingForFunction,
+            ImportDeclaration: checkSpacingForModuleDeclaration,
+            VariableDeclaration: checkSpacingAroundFirstToken,
+
+            // Expressions
+            ArrowFunctionExpression: checkSpacingForFunction,
+            AwaitExpression: checkSpacingForAwaitExpression,
+            ClassExpression: checkSpacingForClass,
+            FunctionExpression: checkSpacingForFunction,
+            NewExpression: checkSpacingBeforeFirstToken,
+            Super: checkSpacingBeforeFirstToken,
+            ThisExpression: checkSpacingBeforeFirstToken,
+            UnaryExpression: checkSpacingBeforeFirstToken,
+            YieldExpression: checkSpacingBeforeFirstToken,
+
+            // Others
+            ImportNamespaceSpecifier: checkSpacingForImportNamespaceSpecifier,
+            MethodDefinition: checkSpacingForProperty,
+            Property: checkSpacingForProperty
+        };
+    }
+};

node_modules/eslint/lib/rules/line-comment-position.js

@@ -0,0 +1,118 @@
+/**
+ * @fileoverview Rule to enforce the position of line comments
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce position of line comments",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/line-comment-position"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["above", "beside"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            position: {
+                                enum: ["above", "beside"]
+                            },
+                            ignorePattern: {
+                                type: "string"
+                            },
+                            applyDefaultPatterns: {
+                                type: "boolean"
+                            },
+                            applyDefaultIgnorePatterns: {
+                                type: "boolean"
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+        const options = context.options[0];
+
+        let above,
+            ignorePattern,
+            applyDefaultIgnorePatterns = true;
+
+        if (!options || typeof options === "string") {
+            above = !options || options === "above";
+
+        } else {
+            above = !options.position || options.position === "above";
+            ignorePattern = options.ignorePattern;
+
+            if (Object.prototype.hasOwnProperty.call(options, "applyDefaultIgnorePatterns")) {
+                applyDefaultIgnorePatterns = options.applyDefaultIgnorePatterns !== false;
+            } else {
+                applyDefaultIgnorePatterns = options.applyDefaultPatterns !== false;
+            }
+        }
+
+        const defaultIgnoreRegExp = astUtils.COMMENTS_IGNORE_PATTERN;
+        const fallThroughRegExp = /^\s*falls?\s?through/;
+        const customIgnoreRegExp = new RegExp(ignorePattern);
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program() {
+                const comments = sourceCode.getAllComments();
+
+                comments.filter(token => token.type === "Line").forEach(node => {
+                    if (applyDefaultIgnorePatterns && (defaultIgnoreRegExp.test(node.value) || fallThroughRegExp.test(node.value))) {
+                        return;
+                    }
+
+                    if (ignorePattern && customIgnoreRegExp.test(node.value)) {
+                        return;
+                    }
+
+                    const previous = sourceCode.getTokenBefore(node, { includeComments: true });
+                    const isOnSameLine = previous && previous.loc.end.line === node.loc.start.line;
+
+                    if (above) {
+                        if (isOnSameLine) {
+                            context.report({
+                                node,
+                                message: "Expected comment to be above code."
+                            });
+                        }
+                    } else {
+                        if (!isOnSameLine) {
+                            context.report({
+                                node,
+                                message: "Expected comment to be beside code."
+                            });
+                        }
+                    }
+                });
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/linebreak-style.js

@@ -0,0 +1,99 @@
+/**
+ * @fileoverview Rule to enforce a single linebreak style.
+ * @author Erik Mueller
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce consistent linebreak style",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/linebreak-style"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["unix", "windows"]
+            }
+        ]
+    },
+
+    create(context) {
+
+        const EXPECTED_LF_MSG = "Expected linebreaks to be 'LF' but found 'CRLF'.",
+            EXPECTED_CRLF_MSG = "Expected linebreaks to be 'CRLF' but found 'LF'.";
+
+        const sourceCode = context.getSourceCode();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Builds a fix function that replaces text at the specified range in the source text.
+         * @param {int[]} range The range to replace
+         * @param {string} text The text to insert.
+         * @returns {Function} Fixer function
+         * @private
+         */
+        function createFix(range, text) {
+            return function(fixer) {
+                return fixer.replaceTextRange(range, text);
+            };
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: function checkForlinebreakStyle(node) {
+                const linebreakStyle = context.options[0] || "unix",
+                    expectedLF = linebreakStyle === "unix",
+                    expectedLFChars = expectedLF ? "\n" : "\r\n",
+                    source = sourceCode.getText(),
+                    pattern = astUtils.createGlobalLinebreakMatcher();
+                let match;
+
+                let i = 0;
+
+                while ((match = pattern.exec(source)) !== null) {
+                    i++;
+                    if (match[0] === expectedLFChars) {
+                        continue;
+                    }
+
+                    const index = match.index;
+                    const range = [index, index + match[0].length];
+
+                    context.report({
+                        node,
+                        loc: {
+                            line: i,
+                            column: sourceCode.lines[i - 1].length
+                        },
+                        message: expectedLF ? EXPECTED_LF_MSG : EXPECTED_CRLF_MSG,
+                        fix: createFix(range, expectedLFChars)
+                    });
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/lines-around-comment.js

@@ -0,0 +1,400 @@
+/**
+ * @fileoverview Enforces empty lines around comments.
+ * @author Jamund Ferguson
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash"),
+    astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Return an array with with any line numbers that are empty.
+ * @param {Array} lines An array of each line of the file.
+ * @returns {Array} An array of line numbers.
+ */
+function getEmptyLineNums(lines) {
+    const emptyLines = lines.map((line, i) => ({
+        code: line.trim(),
+        num: i + 1
+    })).filter(line => !line.code).map(line => line.num);
+
+    return emptyLines;
+}
+
+/**
+ * Return an array with with any line numbers that contain comments.
+ * @param {Array} comments An array of comment tokens.
+ * @returns {Array} An array of line numbers.
+ */
+function getCommentLineNums(comments) {
+    const lines = [];
+
+    comments.forEach(token => {
+        const start = token.loc.start.line;
+        const end = token.loc.end.line;
+
+        lines.push(start, end);
+    });
+    return lines;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "require empty lines around comments",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/lines-around-comment"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    beforeBlockComment: {
+                        type: "boolean"
+                    },
+                    afterBlockComment: {
+                        type: "boolean"
+                    },
+                    beforeLineComment: {
+                        type: "boolean"
+                    },
+                    afterLineComment: {
+                        type: "boolean"
+                    },
+                    allowBlockStart: {
+                        type: "boolean"
+                    },
+                    allowBlockEnd: {
+                        type: "boolean"
+                    },
+                    allowClassStart: {
+                        type: "boolean"
+                    },
+                    allowClassEnd: {
+                        type: "boolean"
+                    },
+                    allowObjectStart: {
+                        type: "boolean"
+                    },
+                    allowObjectEnd: {
+                        type: "boolean"
+                    },
+                    allowArrayStart: {
+                        type: "boolean"
+                    },
+                    allowArrayEnd: {
+                        type: "boolean"
+                    },
+                    ignorePattern: {
+                        type: "string"
+                    },
+                    applyDefaultIgnorePatterns: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        const options = context.options[0] ? Object.assign({}, context.options[0]) : {};
+        const ignorePattern = options.ignorePattern;
+        const defaultIgnoreRegExp = astUtils.COMMENTS_IGNORE_PATTERN;
+        const customIgnoreRegExp = new RegExp(ignorePattern);
+        const applyDefaultIgnorePatterns = options.applyDefaultIgnorePatterns !== false;
+
+
+        options.beforeLineComment = options.beforeLineComment || false;
+        options.afterLineComment = options.afterLineComment || false;
+        options.beforeBlockComment = typeof options.beforeBlockComment !== "undefined" ? options.beforeBlockComment : true;
+        options.afterBlockComment = options.afterBlockComment || false;
+        options.allowBlockStart = options.allowBlockStart || false;
+        options.allowBlockEnd = options.allowBlockEnd || false;
+
+        const sourceCode = context.getSourceCode();
+
+        const lines = sourceCode.lines,
+            numLines = lines.length + 1,
+            comments = sourceCode.getAllComments(),
+            commentLines = getCommentLineNums(comments),
+            emptyLines = getEmptyLineNums(lines),
+            commentAndEmptyLines = commentLines.concat(emptyLines);
+
+        /**
+         * Returns whether or not comments are on lines starting with or ending with code
+         * @param {token} token The comment token to check.
+         * @returns {boolean} True if the comment is not alone.
+         */
+        function codeAroundComment(token) {
+            let currentToken = token;
+
+            do {
+                currentToken = sourceCode.getTokenBefore(currentToken, { includeComments: true });
+            } while (currentToken && astUtils.isCommentToken(currentToken));
+
+            if (currentToken && astUtils.isTokenOnSameLine(currentToken, token)) {
+                return true;
+            }
+
+            currentToken = token;
+            do {
+                currentToken = sourceCode.getTokenAfter(currentToken, { includeComments: true });
+            } while (currentToken && astUtils.isCommentToken(currentToken));
+
+            if (currentToken && astUtils.isTokenOnSameLine(token, currentToken)) {
+                return true;
+            }
+
+            return false;
+        }
+
+        /**
+         * Returns whether or not comments are inside a node type or not.
+         * @param {ASTNode} parent The Comment parent node.
+         * @param {string} nodeType The parent type to check against.
+         * @returns {boolean} True if the comment is inside nodeType.
+         */
+        function isParentNodeType(parent, nodeType) {
+            return parent.type === nodeType ||
+                (parent.body && parent.body.type === nodeType) ||
+                (parent.consequent && parent.consequent.type === nodeType);
+        }
+
+        /**
+         * Returns the parent node that contains the given token.
+         * @param {token} token The token to check.
+         * @returns {ASTNode} The parent node that contains the given token.
+         */
+        function getParentNodeOfToken(token) {
+            return sourceCode.getNodeByRangeIndex(token.range[0]);
+        }
+
+        /**
+         * Returns whether or not comments are at the parent start or not.
+         * @param {token} token The Comment token.
+         * @param {string} nodeType The parent type to check against.
+         * @returns {boolean} True if the comment is at parent start.
+         */
+        function isCommentAtParentStart(token, nodeType) {
+            const parent = getParentNodeOfToken(token);
+
+            return parent && isParentNodeType(parent, nodeType) &&
+                    token.loc.start.line - parent.loc.start.line === 1;
+        }
+
+        /**
+         * Returns whether or not comments are at the parent end or not.
+         * @param {token} token The Comment token.
+         * @param {string} nodeType The parent type to check against.
+         * @returns {boolean} True if the comment is at parent end.
+         */
+        function isCommentAtParentEnd(token, nodeType) {
+            const parent = getParentNodeOfToken(token);
+
+            return parent && isParentNodeType(parent, nodeType) &&
+                    parent.loc.end.line - token.loc.end.line === 1;
+        }
+
+        /**
+         * Returns whether or not comments are at the block start or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at block start.
+         */
+        function isCommentAtBlockStart(token) {
+            return isCommentAtParentStart(token, "ClassBody") || isCommentAtParentStart(token, "BlockStatement") || isCommentAtParentStart(token, "SwitchCase");
+        }
+
+        /**
+         * Returns whether or not comments are at the block end or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at block end.
+         */
+        function isCommentAtBlockEnd(token) {
+            return isCommentAtParentEnd(token, "ClassBody") || isCommentAtParentEnd(token, "BlockStatement") || isCommentAtParentEnd(token, "SwitchCase") || isCommentAtParentEnd(token, "SwitchStatement");
+        }
+
+        /**
+         * Returns whether or not comments are at the class start or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at class start.
+         */
+        function isCommentAtClassStart(token) {
+            return isCommentAtParentStart(token, "ClassBody");
+        }
+
+        /**
+         * Returns whether or not comments are at the class end or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at class end.
+         */
+        function isCommentAtClassEnd(token) {
+            return isCommentAtParentEnd(token, "ClassBody");
+        }
+
+        /**
+         * Returns whether or not comments are at the object start or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at object start.
+         */
+        function isCommentAtObjectStart(token) {
+            return isCommentAtParentStart(token, "ObjectExpression") || isCommentAtParentStart(token, "ObjectPattern");
+        }
+
+        /**
+         * Returns whether or not comments are at the object end or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at object end.
+         */
+        function isCommentAtObjectEnd(token) {
+            return isCommentAtParentEnd(token, "ObjectExpression") || isCommentAtParentEnd(token, "ObjectPattern");
+        }
+
+        /**
+         * Returns whether or not comments are at the array start or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at array start.
+         */
+        function isCommentAtArrayStart(token) {
+            return isCommentAtParentStart(token, "ArrayExpression") || isCommentAtParentStart(token, "ArrayPattern");
+        }
+
+        /**
+         * Returns whether or not comments are at the array end or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at array end.
+         */
+        function isCommentAtArrayEnd(token) {
+            return isCommentAtParentEnd(token, "ArrayExpression") || isCommentAtParentEnd(token, "ArrayPattern");
+        }
+
+        /**
+         * Checks if a comment token has lines around it (ignores inline comments)
+         * @param {token} token The Comment token.
+         * @param {Object} opts Options to determine the newline.
+         * @param {boolean} opts.after Should have a newline after this line.
+         * @param {boolean} opts.before Should have a newline before this line.
+         * @returns {void}
+         */
+        function checkForEmptyLine(token, opts) {
+            if (applyDefaultIgnorePatterns && defaultIgnoreRegExp.test(token.value)) {
+                return;
+            }
+
+            if (ignorePattern && customIgnoreRegExp.test(token.value)) {
+                return;
+            }
+
+            let after = opts.after,
+                before = opts.before;
+
+            const prevLineNum = token.loc.start.line - 1,
+                nextLineNum = token.loc.end.line + 1,
+                commentIsNotAlone = codeAroundComment(token);
+
+            const blockStartAllowed = options.allowBlockStart &&
+                    isCommentAtBlockStart(token) &&
+                    !(options.allowClassStart === false &&
+                    isCommentAtClassStart(token)),
+                blockEndAllowed = options.allowBlockEnd && isCommentAtBlockEnd(token) && !(options.allowClassEnd === false && isCommentAtClassEnd(token)),
+                classStartAllowed = options.allowClassStart && isCommentAtClassStart(token),
+                classEndAllowed = options.allowClassEnd && isCommentAtClassEnd(token),
+                objectStartAllowed = options.allowObjectStart && isCommentAtObjectStart(token),
+                objectEndAllowed = options.allowObjectEnd && isCommentAtObjectEnd(token),
+                arrayStartAllowed = options.allowArrayStart && isCommentAtArrayStart(token),
+                arrayEndAllowed = options.allowArrayEnd && isCommentAtArrayEnd(token);
+
+            const exceptionStartAllowed = blockStartAllowed || classStartAllowed || objectStartAllowed || arrayStartAllowed;
+            const exceptionEndAllowed = blockEndAllowed || classEndAllowed || objectEndAllowed || arrayEndAllowed;
+
+            // ignore top of the file and bottom of the file
+            if (prevLineNum < 1) {
+                before = false;
+            }
+            if (nextLineNum >= numLines) {
+                after = false;
+            }
+
+            // we ignore all inline comments
+            if (commentIsNotAlone) {
+                return;
+            }
+
+            const previousTokenOrComment = sourceCode.getTokenBefore(token, { includeComments: true });
+            const nextTokenOrComment = sourceCode.getTokenAfter(token, { includeComments: true });
+
+            // check for newline before
+            if (!exceptionStartAllowed && before && !lodash.includes(commentAndEmptyLines, prevLineNum) &&
+                    !(astUtils.isCommentToken(previousTokenOrComment) && astUtils.isTokenOnSameLine(previousTokenOrComment, token))) {
+                const lineStart = token.range[0] - token.loc.start.column;
+                const range = [lineStart, lineStart];
+
+                context.report({
+                    node: token,
+                    message: "Expected line before comment.",
+                    fix(fixer) {
+                        return fixer.insertTextBeforeRange(range, "\n");
+                    }
+                });
+            }
+
+            // check for newline after
+            if (!exceptionEndAllowed && after && !lodash.includes(commentAndEmptyLines, nextLineNum) &&
+                    !(astUtils.isCommentToken(nextTokenOrComment) && astUtils.isTokenOnSameLine(token, nextTokenOrComment))) {
+                context.report({
+                    node: token,
+                    message: "Expected line after comment.",
+                    fix(fixer) {
+                        return fixer.insertTextAfter(token, "\n");
+                    }
+                });
+            }
+
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program() {
+                comments.forEach(token => {
+                    if (token.type === "Line") {
+                        if (options.beforeLineComment || options.afterLineComment) {
+                            checkForEmptyLine(token, {
+                                after: options.afterLineComment,
+                                before: options.beforeLineComment
+                            });
+                        }
+                    } else if (token.type === "Block") {
+                        if (options.beforeBlockComment || options.afterBlockComment) {
+                            checkForEmptyLine(token, {
+                                after: options.afterBlockComment,
+                                before: options.beforeBlockComment
+                            });
+                        }
+                    }
+                });
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/lines-around-directive.js

@@ -0,0 +1,198 @@
+/**
+ * @fileoverview Require or disallow newlines around directives.
+ * @author Kai Cataldo
+ * @deprecated
+ */
+
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "require or disallow newlines around directives",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/lines-around-directive"
+        },
+
+        schema: [{
+            oneOf: [
+                {
+                    enum: ["always", "never"]
+                },
+                {
+                    type: "object",
+                    properties: {
+                        before: {
+                            enum: ["always", "never"]
+                        },
+                        after: {
+                            enum: ["always", "never"]
+                        }
+                    },
+                    additionalProperties: false,
+                    minProperties: 2
+                }
+            ]
+        }],
+
+        fixable: "whitespace",
+        deprecated: true,
+        replacedBy: ["padding-line-between-statements"]
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+        const config = context.options[0] || "always";
+        const expectLineBefore = typeof config === "string" ? config : config.before;
+        const expectLineAfter = typeof config === "string" ? config : config.after;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Check if node is preceded by a blank newline.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} Whether or not the passed in node is preceded by a blank newline.
+         */
+        function hasNewlineBefore(node) {
+            const tokenBefore = sourceCode.getTokenBefore(node, { includeComments: true });
+            const tokenLineBefore = tokenBefore ? tokenBefore.loc.end.line : 0;
+
+            return node.loc.start.line - tokenLineBefore >= 2;
+        }
+
+        /**
+         * Gets the last token of a node that is on the same line as the rest of the node.
+         * This will usually be the last token of the node, but it will be the second-to-last token if the node has a trailing
+         * semicolon on a different line.
+         * @param {ASTNode} node A directive node
+         * @returns {Token} The last token of the node on the line
+         */
+        function getLastTokenOnLine(node) {
+            const lastToken = sourceCode.getLastToken(node);
+            const secondToLastToken = sourceCode.getTokenBefore(lastToken);
+
+            return astUtils.isSemicolonToken(lastToken) && lastToken.loc.start.line > secondToLastToken.loc.end.line
+                ? secondToLastToken
+                : lastToken;
+        }
+
+        /**
+         * Check if node is followed by a blank newline.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} Whether or not the passed in node is followed by a blank newline.
+         */
+        function hasNewlineAfter(node) {
+            const lastToken = getLastTokenOnLine(node);
+            const tokenAfter = sourceCode.getTokenAfter(lastToken, { includeComments: true });
+
+            return tokenAfter.loc.start.line - lastToken.loc.end.line >= 2;
+        }
+
+        /**
+         * Report errors for newlines around directives.
+         * @param {ASTNode} node Node to check.
+         * @param {string} location Whether the error was found before or after the directive.
+         * @param {boolean} expected Whether or not a newline was expected or unexpected.
+         * @returns {void}
+         */
+        function reportError(node, location, expected) {
+            context.report({
+                node,
+                message: "{{expected}} newline {{location}} \"{{value}}\" directive.",
+                data: {
+                    expected: expected ? "Expected" : "Unexpected",
+                    value: node.expression.value,
+                    location
+                },
+                fix(fixer) {
+                    const lastToken = getLastTokenOnLine(node);
+
+                    if (expected) {
+                        return location === "before" ? fixer.insertTextBefore(node, "\n") : fixer.insertTextAfter(lastToken, "\n");
+                    }
+                    return fixer.removeRange(location === "before" ? [node.range[0] - 1, node.range[0]] : [lastToken.range[1], lastToken.range[1] + 1]);
+                }
+            });
+        }
+
+        /**
+         * Check lines around directives in node
+         * @param {ASTNode} node - node to check
+         * @returns {void}
+         */
+        function checkDirectives(node) {
+            const directives = astUtils.getDirectivePrologue(node);
+
+            if (!directives.length) {
+                return;
+            }
+
+            const firstDirective = directives[0];
+            const leadingComments = sourceCode.getCommentsBefore(firstDirective);
+
+            /*
+             * Only check before the first directive if it is preceded by a comment or if it is at the top of
+             * the file and expectLineBefore is set to "never". This is to not force a newline at the top of
+             * the file if there are no comments as well as for compatibility with padded-blocks.
+             */
+            if (leadingComments.length) {
+                if (expectLineBefore === "always" && !hasNewlineBefore(firstDirective)) {
+                    reportError(firstDirective, "before", true);
+                }
+
+                if (expectLineBefore === "never" && hasNewlineBefore(firstDirective)) {
+                    reportError(firstDirective, "before", false);
+                }
+            } else if (
+                node.type === "Program" &&
+                expectLineBefore === "never" &&
+                !leadingComments.length &&
+                hasNewlineBefore(firstDirective)
+            ) {
+                reportError(firstDirective, "before", false);
+            }
+
+            const lastDirective = directives[directives.length - 1];
+            const statements = node.type === "Program" ? node.body : node.body.body;
+
+            /*
+             * Do not check after the last directive if the body only
+             * contains a directive prologue and isn't followed by a comment to ensure
+             * this rule behaves well with padded-blocks.
+             */
+            if (lastDirective === statements[statements.length - 1] && !lastDirective.trailingComments) {
+                return;
+            }
+
+            if (expectLineAfter === "always" && !hasNewlineAfter(lastDirective)) {
+                reportError(lastDirective, "after", true);
+            }
+
+            if (expectLineAfter === "never" && hasNewlineAfter(lastDirective)) {
+                reportError(lastDirective, "after", false);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: checkDirectives,
+            FunctionDeclaration: checkDirectives,
+            FunctionExpression: checkDirectives,
+            ArrowFunctionExpression: checkDirectives
+        };
+    }
+};

node_modules/eslint/lib/rules/lines-between-class-members.js

@@ -0,0 +1,142 @@
+/**
+ * @fileoverview Rule to check empty newline between class members
+ * @author 薛定谔的猫<hh_2013@foxmail.com>
+ */
+"use strict";
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "require or disallow an empty line between class members",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/lines-between-class-members"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            },
+            {
+                type: "object",
+                properties: {
+                    exceptAfterSingleLine: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        const options = [];
+
+        options[0] = context.options[0] || "always";
+        options[1] = context.options[1] || { exceptAfterSingleLine: false };
+
+        const ALWAYS_MESSAGE = "Expected blank line between class members.";
+        const NEVER_MESSAGE = "Unexpected blank line between class members.";
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Checks if there is padding between two tokens
+         * @param {Token} first The first token
+         * @param {Token} second The second token
+         * @returns {boolean} True if there is at least a line between the tokens
+         */
+        function isPaddingBetweenTokens(first, second) {
+            const comments = sourceCode.getCommentsBefore(second);
+            const len = comments.length;
+
+            // If there is no comments
+            if (len === 0) {
+                const linesBetweenFstAndSnd = second.loc.start.line - first.loc.end.line - 1;
+
+                return linesBetweenFstAndSnd >= 1;
+            }
+
+
+            // If there are comments
+            let sumOfCommentLines = 0; // the numbers of lines of comments
+            let prevCommentLineNum = -1; // line number of the end of the previous comment
+
+            for (let i = 0; i < len; i++) {
+                const commentLinesOfThisComment = comments[i].loc.end.line - comments[i].loc.start.line + 1;
+
+                sumOfCommentLines += commentLinesOfThisComment;
+
+                /*
+                 * If this comment and the previous comment are in the same line,
+                 * the count of comment lines is duplicated. So decrement sumOfCommentLines.
+                 */
+                if (prevCommentLineNum === comments[i].loc.start.line) {
+                    sumOfCommentLines -= 1;
+                }
+
+                prevCommentLineNum = comments[i].loc.end.line;
+            }
+
+            /*
+             * If the first block and the first comment are in the same line,
+             * the count of comment lines is duplicated. So decrement sumOfCommentLines.
+             */
+            if (first.loc.end.line === comments[0].loc.start.line) {
+                sumOfCommentLines -= 1;
+            }
+
+            /*
+             * If the last comment and the second block are in the same line,
+             * the count of comment lines is duplicated. So decrement sumOfCommentLines.
+             */
+            if (comments[len - 1].loc.end.line === second.loc.start.line) {
+                sumOfCommentLines -= 1;
+            }
+
+            const linesBetweenFstAndSnd = second.loc.start.line - first.loc.end.line - 1;
+
+            return linesBetweenFstAndSnd - sumOfCommentLines >= 1;
+        }
+
+        return {
+            ClassBody(node) {
+                const body = node.body;
+
+                for (let i = 0; i < body.length - 1; i++) {
+                    const curFirst = sourceCode.getFirstToken(body[i]);
+                    const curLast = sourceCode.getLastToken(body[i]);
+                    const nextFirst = sourceCode.getFirstToken(body[i + 1]);
+                    const isPadded = isPaddingBetweenTokens(curLast, nextFirst);
+                    const isMulti = !astUtils.isTokenOnSameLine(curFirst, curLast);
+                    const skip = !isMulti && options[1].exceptAfterSingleLine;
+
+
+                    if ((options[0] === "always" && !skip && !isPadded) ||
+                        (options[0] === "never" && isPadded)) {
+                        context.report({
+                            node: body[i + 1],
+                            message: isPadded ? NEVER_MESSAGE : ALWAYS_MESSAGE,
+                            fix(fixer) {
+                                return isPadded
+                                    ? fixer.replaceTextRange([curLast.range[1], nextFirst.range[0]], "\n")
+                                    : fixer.insertTextAfter(curLast, "\n");
+                            }
+                        });
+                    }
+                }
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/max-classes-per-file.js

@@ -0,0 +1,64 @@
+/**
+ * @fileoverview Enforce a maximum number of classes per file
+ * @author James Garbutt <https://github.com/43081j>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce a maximum number of classes per file",
+            category: "Best Practices",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/max-classes-per-file"
+        },
+
+        schema: [
+            {
+                type: "integer",
+                minimum: 1
+            }
+        ],
+
+        messages: {
+            maximumExceeded: "Number of classes per file must not exceed {{ max }}"
+        }
+    },
+    create(context) {
+
+        const maxClasses = context.options[0] || 1;
+
+        let classCount = 0;
+
+        return {
+            Program() {
+                classCount = 0;
+            },
+            "Program:exit"(node) {
+                if (classCount > maxClasses) {
+                    context.report({
+                        node,
+                        messageId: "maximumExceeded",
+                        data: {
+                            max: maxClasses
+                        }
+                    });
+                }
+            },
+            "ClassDeclaration, ClassExpression"() {
+                classCount++;
+            }
+        };
+    }
+};

node_modules/eslint/lib/rules/max-depth.js

@@ -0,0 +1,151 @@
+/**
+ * @fileoverview A rule to set the maximum depth block can be nested in a function.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce a maximum depth that blocks can be nested",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/max-depth"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ]
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const functionStack = [],
+            option = context.options[0];
+        let maxDepth = 4;
+
+        if (typeof option === "object" && Object.prototype.hasOwnProperty.call(option, "maximum") && typeof option.maximum === "number") {
+            maxDepth = option.maximum;
+        }
+        if (typeof option === "object" && Object.prototype.hasOwnProperty.call(option, "max") && typeof option.max === "number") {
+            maxDepth = option.max;
+        }
+        if (typeof option === "number") {
+            maxDepth = option;
+        }
+
+        /**
+         * When parsing a new function, store it in our function stack
+         * @returns {void}
+         * @private
+         */
+        function startFunction() {
+            functionStack.push(0);
+        }
+
+        /**
+         * When parsing is done then pop out the reference
+         * @returns {void}
+         * @private
+         */
+        function endFunction() {
+            functionStack.pop();
+        }
+
+        /**
+         * Save the block and Evaluate the node
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function pushBlock(node) {
+            const len = ++functionStack[functionStack.length - 1];
+
+            if (len > maxDepth) {
+                context.report({ node, message: "Blocks are nested too deeply ({{depth}}).", data: { depth: len } });
+            }
+        }
+
+        /**
+         * Pop the saved block
+         * @returns {void}
+         * @private
+         */
+        function popBlock() {
+            functionStack[functionStack.length - 1]--;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: startFunction,
+            FunctionDeclaration: startFunction,
+            FunctionExpression: startFunction,
+            ArrowFunctionExpression: startFunction,
+
+            IfStatement(node) {
+                if (node.parent.type !== "IfStatement") {
+                    pushBlock(node);
+                }
+            },
+            SwitchStatement: pushBlock,
+            TryStatement: pushBlock,
+            DoWhileStatement: pushBlock,
+            WhileStatement: pushBlock,
+            WithStatement: pushBlock,
+            ForStatement: pushBlock,
+            ForInStatement: pushBlock,
+            ForOfStatement: pushBlock,
+
+            "IfStatement:exit": popBlock,
+            "SwitchStatement:exit": popBlock,
+            "TryStatement:exit": popBlock,
+            "DoWhileStatement:exit": popBlock,
+            "WhileStatement:exit": popBlock,
+            "WithStatement:exit": popBlock,
+            "ForStatement:exit": popBlock,
+            "ForInStatement:exit": popBlock,
+            "ForOfStatement:exit": popBlock,
+
+            "FunctionDeclaration:exit": endFunction,
+            "FunctionExpression:exit": endFunction,
+            "ArrowFunctionExpression:exit": endFunction,
+            "Program:exit": endFunction
+        };
+
+    }
+};

node_modules/eslint/lib/rules/max-len.js

@@ -0,0 +1,375 @@
+/**
+ * @fileoverview Rule to check for max length on a line.
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const OPTIONS_SCHEMA = {
+    type: "object",
+    properties: {
+        code: {
+            type: "integer",
+            minimum: 0
+        },
+        comments: {
+            type: "integer",
+            minimum: 0
+        },
+        tabWidth: {
+            type: "integer",
+            minimum: 0
+        },
+        ignorePattern: {
+            type: "string"
+        },
+        ignoreComments: {
+            type: "boolean"
+        },
+        ignoreStrings: {
+            type: "boolean"
+        },
+        ignoreUrls: {
+            type: "boolean"
+        },
+        ignoreTemplateLiterals: {
+            type: "boolean"
+        },
+        ignoreRegExpLiterals: {
+            type: "boolean"
+        },
+        ignoreTrailingComments: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+
+const OPTIONS_OR_INTEGER_SCHEMA = {
+    anyOf: [
+        OPTIONS_SCHEMA,
+        {
+            type: "integer",
+            minimum: 0
+        }
+    ]
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "enforce a maximum line length",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/max-len"
+        },
+
+        schema: [
+            OPTIONS_OR_INTEGER_SCHEMA,
+            OPTIONS_OR_INTEGER_SCHEMA,
+            OPTIONS_SCHEMA
+        ]
+    },
+
+    create(context) {
+
+        /*
+         * Inspired by http://tools.ietf.org/html/rfc3986#appendix-B, however:
+         * - They're matching an entire string that we know is a URI
+         * - We're matching part of a string where we think there *might* be a URL
+         * - We're only concerned about URLs, as picking out any URI would cause
+         *   too many false positives
+         * - We don't care about matching the entire URL, any small segment is fine
+         */
+        const URL_REGEXP = /[^:/?#]:\/\/[^?#]/;
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Computes the length of a line that may contain tabs. The width of each
+         * tab will be the number of spaces to the next tab stop.
+         * @param {string} line The line.
+         * @param {int} tabWidth The width of each tab stop in spaces.
+         * @returns {int} The computed line length.
+         * @private
+         */
+        function computeLineLength(line, tabWidth) {
+            let extraCharacterCount = 0;
+
+            line.replace(/\t/g, (match, offset) => {
+                const totalOffset = offset + extraCharacterCount,
+                    previousTabStopOffset = tabWidth ? totalOffset % tabWidth : 0,
+                    spaceCount = tabWidth - previousTabStopOffset;
+
+                extraCharacterCount += spaceCount - 1; // -1 for the replaced tab
+            });
+            return Array.from(line).length + extraCharacterCount;
+        }
+
+        // The options object must be the last option specified…
+        const lastOption = context.options[context.options.length - 1];
+        const options = typeof lastOption === "object" ? Object.create(lastOption) : {};
+
+        // …but max code length…
+        if (typeof context.options[0] === "number") {
+            options.code = context.options[0];
+        }
+
+        // …and tabWidth can be optionally specified directly as integers.
+        if (typeof context.options[1] === "number") {
+            options.tabWidth = context.options[1];
+        }
+
+        const maxLength = options.code || 80,
+            tabWidth = options.tabWidth || 4,
+            ignoreComments = options.ignoreComments || false,
+            ignoreStrings = options.ignoreStrings || false,
+            ignoreTemplateLiterals = options.ignoreTemplateLiterals || false,
+            ignoreRegExpLiterals = options.ignoreRegExpLiterals || false,
+            ignoreTrailingComments = options.ignoreTrailingComments || options.ignoreComments || false,
+            ignoreUrls = options.ignoreUrls || false,
+            maxCommentLength = options.comments;
+        let ignorePattern = options.ignorePattern || null;
+
+        if (ignorePattern) {
+            ignorePattern = new RegExp(ignorePattern);
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Tells if a given comment is trailing: it starts on the current line and
+         * extends to or past the end of the current line.
+         * @param {string} line The source line we want to check for a trailing comment on
+         * @param {number} lineNumber The one-indexed line number for line
+         * @param {ASTNode} comment The comment to inspect
+         * @returns {boolean} If the comment is trailing on the given line
+         */
+        function isTrailingComment(line, lineNumber, comment) {
+            return comment &&
+                (comment.loc.start.line === lineNumber && lineNumber <= comment.loc.end.line) &&
+                (comment.loc.end.line > lineNumber || comment.loc.end.column === line.length);
+        }
+
+        /**
+         * Tells if a comment encompasses the entire line.
+         * @param {string} line The source line with a trailing comment
+         * @param {number} lineNumber The one-indexed line number this is on
+         * @param {ASTNode} comment The comment to remove
+         * @returns {boolean} If the comment covers the entire line
+         */
+        function isFullLineComment(line, lineNumber, comment) {
+            const start = comment.loc.start,
+                end = comment.loc.end,
+                isFirstTokenOnLine = !line.slice(0, comment.loc.start.column).trim();
+
+            return comment &&
+                (start.line < lineNumber || (start.line === lineNumber && isFirstTokenOnLine)) &&
+                (end.line > lineNumber || (end.line === lineNumber && end.column === line.length));
+        }
+
+        /**
+         * Gets the line after the comment and any remaining trailing whitespace is
+         * stripped.
+         * @param {string} line The source line with a trailing comment
+         * @param {ASTNode} comment The comment to remove
+         * @returns {string} Line without comment and trailing whitepace
+         */
+        function stripTrailingComment(line, comment) {
+
+            // loc.column is zero-indexed
+            return line.slice(0, comment.loc.start.column).replace(/\s+$/, "");
+        }
+
+        /**
+         * Ensure that an array exists at [key] on `object`, and add `value` to it.
+         *
+         * @param {Object} object the object to mutate
+         * @param {string} key the object's key
+         * @param {*} value the value to add
+         * @returns {void}
+         * @private
+         */
+        function ensureArrayAndPush(object, key, value) {
+            if (!Array.isArray(object[key])) {
+                object[key] = [];
+            }
+            object[key].push(value);
+        }
+
+        /**
+         * Retrieves an array containing all strings (" or ') in the source code.
+         *
+         * @returns {ASTNode[]} An array of string nodes.
+         */
+        function getAllStrings() {
+            return sourceCode.ast.tokens.filter(token => (token.type === "String" ||
+                (token.type === "JSXText" && sourceCode.getNodeByRangeIndex(token.range[0] - 1).type === "JSXAttribute")));
+        }
+
+        /**
+         * Retrieves an array containing all template literals in the source code.
+         *
+         * @returns {ASTNode[]} An array of template literal nodes.
+         */
+        function getAllTemplateLiterals() {
+            return sourceCode.ast.tokens.filter(token => token.type === "Template");
+        }
+
+
+        /**
+         * Retrieves an array containing all RegExp literals in the source code.
+         *
+         * @returns {ASTNode[]} An array of RegExp literal nodes.
+         */
+        function getAllRegExpLiterals() {
+            return sourceCode.ast.tokens.filter(token => token.type === "RegularExpression");
+        }
+
+
+        /**
+         * A reducer to group an AST node by line number, both start and end.
+         *
+         * @param {Object} acc the accumulator
+         * @param {ASTNode} node the AST node in question
+         * @returns {Object} the modified accumulator
+         * @private
+         */
+        function groupByLineNumber(acc, node) {
+            for (let i = node.loc.start.line; i <= node.loc.end.line; ++i) {
+                ensureArrayAndPush(acc, i, node);
+            }
+            return acc;
+        }
+
+        /**
+         * Check the program for max length
+         * @param {ASTNode} node Node to examine
+         * @returns {void}
+         * @private
+         */
+        function checkProgramForMaxLength(node) {
+
+            // split (honors line-ending)
+            const lines = sourceCode.lines,
+
+                // list of comments to ignore
+                comments = ignoreComments || maxCommentLength || ignoreTrailingComments ? sourceCode.getAllComments() : [];
+
+            // we iterate over comments in parallel with the lines
+            let commentsIndex = 0;
+
+            const strings = getAllStrings();
+            const stringsByLine = strings.reduce(groupByLineNumber, {});
+
+            const templateLiterals = getAllTemplateLiterals();
+            const templateLiteralsByLine = templateLiterals.reduce(groupByLineNumber, {});
+
+            const regExpLiterals = getAllRegExpLiterals();
+            const regExpLiteralsByLine = regExpLiterals.reduce(groupByLineNumber, {});
+
+            lines.forEach((line, i) => {
+
+                // i is zero-indexed, line numbers are one-indexed
+                const lineNumber = i + 1;
+
+                /*
+                 * if we're checking comment length; we need to know whether this
+                 * line is a comment
+                 */
+                let lineIsComment = false;
+                let textToMeasure;
+
+                /*
+                 * We can short-circuit the comment checks if we're already out of
+                 * comments to check.
+                 */
+                if (commentsIndex < comments.length) {
+                    let comment = null;
+
+                    // iterate over comments until we find one past the current line
+                    do {
+                        comment = comments[++commentsIndex];
+                    } while (comment && comment.loc.start.line <= lineNumber);
+
+                    // and step back by one
+                    comment = comments[--commentsIndex];
+
+                    if (isFullLineComment(line, lineNumber, comment)) {
+                        lineIsComment = true;
+                        textToMeasure = line;
+                    } else if (ignoreTrailingComments && isTrailingComment(line, lineNumber, comment)) {
+                        textToMeasure = stripTrailingComment(line, comment);
+                    } else {
+                        textToMeasure = line;
+                    }
+                } else {
+                    textToMeasure = line;
+                }
+                if (ignorePattern && ignorePattern.test(textToMeasure) ||
+                    ignoreUrls && URL_REGEXP.test(textToMeasure) ||
+                    ignoreStrings && stringsByLine[lineNumber] ||
+                    ignoreTemplateLiterals && templateLiteralsByLine[lineNumber] ||
+                    ignoreRegExpLiterals && regExpLiteralsByLine[lineNumber]
+                ) {
+
+                    // ignore this line
+                    return;
+                }
+
+                const lineLength = computeLineLength(textToMeasure, tabWidth);
+                const commentLengthApplies = lineIsComment && maxCommentLength;
+
+                if (lineIsComment && ignoreComments) {
+                    return;
+                }
+
+                if (commentLengthApplies) {
+                    if (lineLength > maxCommentLength) {
+                        context.report({
+                            node,
+                            loc: { line: lineNumber, column: 0 },
+                            message: "Line {{lineNumber}} exceeds the maximum comment line length of {{maxCommentLength}}.",
+                            data: {
+                                lineNumber: i + 1,
+                                maxCommentLength
+                            }
+                        });
+                    }
+                } else if (lineLength > maxLength) {
+                    context.report({
+                        node,
+                        loc: { line: lineNumber, column: 0 },
+                        message: "Line {{lineNumber}} exceeds the maximum line length of {{maxLength}}.",
+                        data: {
+                            lineNumber: i + 1,
+                            maxLength
+                        }
+                    });
+                }
+            });
+        }
+
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: checkProgramForMaxLength
+        };
+
+    }
+};

node_modules/eslint/lib/rules/max-lines-per-function.js

@@ -0,0 +1,220 @@
+/**
+ * @fileoverview A rule to set the maximum number of line of code in a function.
+ * @author Pete Ward <peteward44@gmail.com>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("../util/ast-utils");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const OPTIONS_SCHEMA = {
+    type: "object",
+    properties: {
+        max: {
+            type: "integer",
+            minimum: 0
+        },
+        skipComments: {
+            type: "boolean"
+        },
+        skipBlankLines: {
+            type: "boolean"
+        },
+        IIFEs: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+
+const OPTIONS_OR_INTEGER_SCHEMA = {
+    oneOf: [
+        OPTIONS_SCHEMA,
+        {
+            type: "integer",
+            minimum: 1
+        }
+    ]
+};
+
+/**
+ * Given a list of comment nodes, return a map with numeric keys (source code line numbers) and comment token values.
+ * @param {Array} comments An array of comment nodes.
+ * @returns {Map.<string,Node>} A map with numeric keys (source code line numbers) and comment token values.
+ */
+function getCommentLineNumbers(comments) {
+    const map = new Map();
+
+    if (!comments) {
+        return map;
+    }
+    comments.forEach(comment => {
+        for (let i = comment.loc.start.line; i <= comment.loc.end.line; i++) {
+            map.set(i, comment);
+        }
+    });
+    return map;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "enforce a maximum number of line of code in a function",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/max-lines-per-function"
+        },
+
+        schema: [
+            OPTIONS_OR_INTEGER_SCHEMA
+        ]
+    },
+
+    create(context) {
+        const sourceCode = context.getSourceCode();
+        const lines = sourceCode.lines;
+
+        const option = context.options[0];
+        let maxLines = 50;
+        let skipComments = false;
+        let skipBlankLines = false;
+        let IIFEs = false;
+
+        if (typeof option === "object") {
+            if (typeof option.max === "number") {
+                maxLines = option.max;
+            }
+            if (typeof option.skipComments === "boolean") {
+                skipComments = option.skipComments;
+            }
+            if (typeof option.skipBlankLines === "boolean") {
+                skipBlankLines = option.skipBlankLines;
+            }
+            if (typeof option.IIFEs === "boolean") {
+                IIFEs = option.IIFEs;
+            }
+        } else if (typeof option === "number") {
+            maxLines = option;
+        }
+
+        const commentLineNumbers = getCommentLineNumbers(sourceCode.getAllComments());
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Tells if a comment encompasses the entire line.
+         * @param {string} line The source line with a trailing comment
+         * @param {number} lineNumber The one-indexed line number this is on
+         * @param {ASTNode} comment The comment to remove
+         * @returns {boolean} If the comment covers the entire line
+         */
+        function isFullLineComment(line, lineNumber, comment) {
+            const start = comment.loc.start,
+                end = comment.loc.end,
+                isFirstTokenOnLine = start.line === lineNumber && !line.slice(0, start.column).trim(),
+                isLastTokenOnLine = end.line === lineNumber && !line.slice(end.column).trim();
+
+            return comment &&
+                (start.line < lineNumber || isFirstTokenOnLine) &&
+                (end.line > lineNumber || isLastTokenOnLine);
+        }
+
+        /**
+         * Identifies is a node is a FunctionExpression which is part of an IIFE
+         * @param {ASTNode} node Node to test
+         * @returns {boolean} True if it's an IIFE
+         */
+        function isIIFE(node) {
+            return node.type === "FunctionExpression" && node.parent && node.parent.type === "CallExpression" && node.parent.callee === node;
+        }
+
+        /**
+         * Identifies is a node is a FunctionExpression which is embedded within a MethodDefinition or Property
+         * @param {ASTNode} node Node to test
+         * @returns {boolean} True if it's a FunctionExpression embedded within a MethodDefinition or Property
+         */
+        function isEmbedded(node) {
+            if (!node.parent) {
+                return false;
+            }
+            if (node !== node.parent.value) {
+                return false;
+            }
+            if (node.parent.type === "MethodDefinition") {
+                return true;
+            }
+            if (node.parent.type === "Property") {
+                return node.parent.method === true || node.parent.kind === "get" || node.parent.kind === "set";
+            }
+            return false;
+        }
+
+        /**
+         * Count the lines in the function
+         * @param {ASTNode} funcNode Function AST node
+         * @returns {void}
+         * @private
+         */
+        function processFunction(funcNode) {
+            const node = isEmbedded(funcNode) ? funcNode.parent : funcNode;
+
+            if (!IIFEs && isIIFE(node)) {
+                return;
+            }
+            let lineCount = 0;
+
+            for (let i = node.loc.start.line - 1; i < node.loc.end.line; ++i) {
+                const line = lines[i];
+
+                if (skipComments) {
+                    if (commentLineNumbers.has(i + 1) && isFullLineComment(line, i + 1, commentLineNumbers.get(i + 1))) {
+                        continue;
+                    }
+                }
+
+                if (skipBlankLines) {
+                    if (line.match(/^\s*$/)) {
+                        continue;
+                    }
+                }
+
+                lineCount++;
+            }
+
+            if (lineCount > maxLines) {
+                const name = astUtils.getFunctionNameWithKind(funcNode);
+
+                context.report({
+                    node,
+                    message: "{{name}} has too many lines ({{lineCount}}). Maximum allowed is {{maxLines}}.",
+                    data: { name, lineCount, maxLines }
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            FunctionDeclaration: processFunction,
+            FunctionExpression: processFunction,
+            ArrowFunctionExpression: processFunction
+        };
+    }
+};