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node_modules/stylelint/lib/rules/at-rule-empty-line-before/README.md

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+# at-rule-empty-line-before
+
+Require or disallow an empty line before at-rules.
+
+<!-- prettier-ignore -->
+```css
+a {}
+          /* ← */
+@media {} /* ↑ */
+/**          ↑
+ *   This line */
+```
+
+This rule ignores:
+
+- at-rules that are the very first node in the source
+- `@import` in Less.
+
+The [`fix` option](../../../docs/user-guide/usage/options.md#fix) can automatically fix all of the problems reported by this rule. We recommend to enable [`indentation`](../indentation/README.md) rule for better autofixing results with this rule.
+
+## Options
+
+`string`: `"always"|"never"`
+
+### `"always"`
+
+There _must always_ be an empty line before at-rules.
+
+The following patterns are considered violations:
+
+<!-- prettier-ignore -->
+```css
+a {} @media {}
+```
+
+<!-- prettier-ignore -->
+```css
+a {}
+@media {}
+```
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+a {}
+
+@media {}
+```
+
+### `"never"`
+
+There _must never_ be an empty line before at-rules.
+
+The following patterns are considered violations:
+
+<!-- prettier-ignore -->
+```css
+a {}
+
+@media {}
+```
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+a {} @media {}
+```
+
+<!-- prettier-ignore -->
+```css
+a {}
+@media {}
+```
+
+## Optional secondary options
+
+### `except: ["after-same-name", "inside-block", "blockless-after-same-name-blockless", "blockless-after-blockless", "first-nested"]`
+
+#### `"after-same-name"`
+
+Reverse the primary option for at-rules that follow another at-rule with the same name.
+
+This means that you can group your at-rules by name.
+
+For example, with `"always"`:
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+@charset "UTF-8";
+
+@import url(x.css);
+@import url(y.css);
+
+@media (min-width: 100px) {}
+@media (min-width: 200px) {}
+```
+
+<!-- prettier-ignore -->
+```css
+a {
+
+  @extends .foo;
+  @extends .bar;
+
+  @include x;
+  @include y {}
+}
+```
+
+#### `"inside-block"`
+
+Reverse the primary option for at-rules that are inside a block.
+
+For example, with `"always"`:
+
+The following patterns are considered violations:
+
+<!-- prettier-ignore -->
+```css
+a {
+
+  @extend foo;
+  color: pink;
+}
+
+b {
+  color: pink;
+
+  @extend foo;
+}
+```
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+a {
+  @extend foo;
+  color: pink;
+}
+
+b {
+  color: pink;
+  @extend foo;
+}
+```
+
+#### `"blockless-after-same-name-blockless"`
+
+Reverse the primary option for blockless at-rules that follow another blockless at-rule with the same name.
+
+This means that you can group your blockless at-rules by name.
+
+Shared-line comments do not affect this option.
+
+For example, with `"always"`:
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+@charset "UTF-8";
+
+@import url(x.css);
+@import url(y.css);
+```
+
+<!-- prettier-ignore -->
+```css
+@charset "UTF-8";
+
+@import url(x.css); /* comment */
+@import url(y.css);
+```
+
+<!-- prettier-ignore -->
+```css
+a {
+
+  @extends .foo;
+  @extends .bar;
+
+  @include loop;
+  @include doo;
+}
+```
+
+#### `"blockless-after-blockless"`
+
+Reverse the primary option for blockless at-rules that follow another blockless at-rule.
+
+Shared-line comments do not affect this option.
+
+For example, with `"always"`:
+
+The following patterns are considered violations:
+
+<!-- prettier-ignore -->
+```css
+@import url(x.css);
+
+@import url(y.css);
+
+@media print {}
+```
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+@import url(x.css);
+@import url(y.css);
+
+@media print {}
+```
+
+<!-- prettier-ignore -->
+```css
+@import url(x.css); /* comment */
+@import url(y.css);
+
+@media print {}
+```
+
+#### `"first-nested"`
+
+Reverse the primary option for at-rules that are nested and the first child of their parent node.
+
+For example, with `"always"`:
+
+The following patterns are considered violations:
+
+<!-- prettier-ignore -->
+```css
+a {
+
+  @extend foo;
+  color: pink;
+}
+
+b {
+  color: pink;
+  @extend foo;
+}
+```
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+a {
+  @extend foo;
+  color: pink;
+}
+
+b {
+  color: pink;
+
+  @extend foo;
+}
+```
+
+### `ignore: ["after-comment", "first-nested", "inside-block", "blockless-after-same-name-blockless", "blockless-after-blockless"]`
+
+#### `"after-comment"`
+
+Ignore at-rules that follow a comment.
+
+Shared-line comments do not trigger this option.
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+/* comment */
+@media {}
+```
+
+<!-- prettier-ignore -->
+```css
+/* comment */
+
+@media {}
+```
+
+<!-- prettier-ignore -->
+```css
+@media {} /* comment */
+
+@media {}
+```
+
+#### `"first-nested"`
+
+Ignore at-rules that are nested and the first child of their parent node.
+
+For example, with `"always"`:
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+@supports {
+  @media {}
+
+  @media {}
+}
+```
+
+#### `"inside-block"`
+
+Ignore at-rules that are inside a block.
+
+For example, with `"always"`:
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+a {
+  @extend foo;
+  color: pink;
+}
+
+a {
+
+  @extend foo;
+  color: pink;
+}
+
+b {
+  color: pink;
+  @extend foo;
+}
+
+b {
+  color: pink;
+
+  @extend foo;
+}
+```
+
+#### `"blockless-after-same-name-blockless"`
+
+Ignore blockless at-rules that follow another blockless at-rule with the same name.
+
+This means that you can group your blockless at-rules by name.
+
+For example, with `"always"`:
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+
+@charset "UTF-8";
+
+@import url(x.css);
+@import url(y.css);
+```
+
+<!-- prettier-ignore -->
+```css
+a {
+
+  @extends .foo;
+  @extends .bar;
+
+  @include loop;
+  @include doo;
+}
+```
+
+#### `"blockless-after-blockless"`
+
+Ignore blockless at-rules that follow another blockless at-rule.
+
+For example, with `"always"`:
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+@import url(x.css);
+
+@import url(y.css);
+
+@media print {}
+```
+
+<!-- prettier-ignore -->
+```css
+@import url(x.css);
+@import url(y.css);
+
+@media print {}
+```
+
+### `ignoreAtRules: ["array", "of", "at-rules"]`
+
+Ignore specified at-rules.
+
+For example, with `"always"`.
+
+Given:
+
+```
+["import"]
+```
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+@charset "UTF-8";
+@import {}
+```

node_modules/stylelint/lib/rules/at-rule-empty-line-before/index.js

@@ -0,0 +1,161 @@
+// @ts-nocheck
+
+'use strict';
+
+const _ = require('lodash');
+const addEmptyLineBefore = require('../../utils/addEmptyLineBefore');
+const getPreviousNonSharedLineCommentNode = require('../../utils/getPreviousNonSharedLineCommentNode');
+const hasEmptyLine = require('../../utils/hasEmptyLine');
+const isAfterComment = require('../../utils/isAfterComment');
+const isBlocklessAtRuleAfterBlocklessAtRule = require('../../utils/isBlocklessAtRuleAfterBlocklessAtRule');
+const isBlocklessAtRuleAfterSameNameBlocklessAtRule = require('../../utils/isBlocklessAtRuleAfterSameNameBlocklessAtRule');
+const isFirstNested = require('../../utils/isFirstNested');
+const isFirstNodeOfRoot = require('../../utils/isFirstNodeOfRoot');
+const isStandardSyntaxAtRule = require('../../utils/isStandardSyntaxAtRule');
+const optionsMatches = require('../../utils/optionsMatches');
+const removeEmptyLinesBefore = require('../../utils/removeEmptyLinesBefore');
+const report = require('../../utils/report');
+const ruleMessages = require('../../utils/ruleMessages');
+const validateOptions = require('../../utils/validateOptions');
+
+const ruleName = 'at-rule-empty-line-before';
+
+const messages = ruleMessages(ruleName, {
+	expected: 'Expected empty line before at-rule',
+	rejected: 'Unexpected empty line before at-rule',
+});
+
+function rule(expectation, options, context) {
+	return (root, result) => {
+		const validOptions = validateOptions(
+			result,
+			ruleName,
+			{
+				actual: expectation,
+				possible: ['always', 'never'],
+			},
+			{
+				actual: options,
+				possible: {
+					except: [
+						'after-same-name',
+						'inside-block',
+						'blockless-after-same-name-blockless',
+						'blockless-after-blockless',
+						'first-nested',
+					],
+					ignore: [
+						'after-comment',
+						'first-nested',
+						'inside-block',
+						'blockless-after-same-name-blockless',
+						'blockless-after-blockless',
+					],
+					ignoreAtRules: [_.isString],
+				},
+				optional: true,
+			},
+		);
+
+		if (!validOptions) {
+			return;
+		}
+
+		root.walkAtRules((atRule) => {
+			const isNested = atRule.parent.type !== 'root';
+
+			// Ignore the first node
+			if (isFirstNodeOfRoot(atRule)) {
+				return;
+			}
+
+			if (!isStandardSyntaxAtRule(atRule)) {
+				return;
+			}
+
+			// Return early if at-rule is to be ignored
+			if (optionsMatches(options, 'ignoreAtRules', atRule.name)) {
+				return;
+			}
+
+			// Optionally ignore the expectation if the node is blockless
+			if (
+				optionsMatches(options, 'ignore', 'blockless-after-blockless') &&
+				isBlocklessAtRuleAfterBlocklessAtRule(atRule)
+			) {
+				return;
+			}
+
+			// Optionally ignore the node if it is the first nested
+			if (optionsMatches(options, 'ignore', 'first-nested') && isFirstNested(atRule)) {
+				return;
+			}
+
+			// Optionally ignore the expectation if the node is blockless
+			// and following another blockless at-rule with the same name
+			if (
+				optionsMatches(options, 'ignore', 'blockless-after-same-name-blockless') &&
+				isBlocklessAtRuleAfterSameNameBlocklessAtRule(atRule)
+			) {
+				return;
+			}
+
+			// Optionally ignore the expectation if the node is inside a block
+			if (optionsMatches(options, 'ignore', 'inside-block') && isNested) {
+				return;
+			}
+
+			// Optionally ignore the expectation if a comment precedes this node
+			if (optionsMatches(options, 'ignore', 'after-comment') && isAfterComment(atRule)) {
+				return;
+			}
+
+			const hasEmptyLineBefore = hasEmptyLine(atRule.raws.before);
+			let expectEmptyLineBefore = expectation === 'always';
+
+			// Optionally reverse the expectation if any exceptions apply
+			if (
+				(optionsMatches(options, 'except', 'after-same-name') &&
+					isAtRuleAfterSameNameAtRule(atRule)) ||
+				(optionsMatches(options, 'except', 'inside-block') && isNested) ||
+				(optionsMatches(options, 'except', 'first-nested') && isFirstNested(atRule)) ||
+				(optionsMatches(options, 'except', 'blockless-after-blockless') &&
+					isBlocklessAtRuleAfterBlocklessAtRule(atRule)) ||
+				(optionsMatches(options, 'except', 'blockless-after-same-name-blockless') &&
+					isBlocklessAtRuleAfterSameNameBlocklessAtRule(atRule))
+			) {
+				expectEmptyLineBefore = !expectEmptyLineBefore;
+			}
+
+			// Return if the expectation is met
+			if (expectEmptyLineBefore === hasEmptyLineBefore) {
+				return;
+			}
+
+			// Fix
+			if (context.fix) {
+				if (expectEmptyLineBefore) {
+					addEmptyLineBefore(atRule, context.newline);
+				} else {
+					removeEmptyLinesBefore(atRule, context.newline);
+				}
+
+				return;
+			}
+
+			const message = expectEmptyLineBefore ? messages.expected : messages.rejected;
+
+			report({ message, node: atRule, result, ruleName });
+		});
+	};
+}
+
+function isAtRuleAfterSameNameAtRule(atRule) {
+	const previousNode = getPreviousNonSharedLineCommentNode(atRule);
+
+	return previousNode && previousNode.type === 'atrule' && previousNode.name === atRule.name;
+}
+
+rule.ruleName = ruleName;
+rule.messages = messages;
+module.exports = rule;