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- 'use strict';
-
- const autoprefixer = require('autoprefixer');
- const Browsers = require('autoprefixer/lib/browsers');
- const Prefixes = require('autoprefixer/lib/prefixes');
-
- /**
- * Use Autoprefixer's secret powers to determine whether or
- * not a certain CSS identifier contains a vendor prefix that
- * Autoprefixer, given the standardized identifier, could add itself.
- *
- * Used by `*-no-vendor-prefix-*` rules to find superfluous
- * vendor prefixes.
- */
-
- const prefixes = new Prefixes(
- autoprefixer.data.prefixes,
- new Browsers(autoprefixer.data.browsers, []),
- );
-
- /**
- * Most identifier types have to be looked up in a unique way,
- * so we're exposing special functions for each.
- */
- module.exports = {
- /**
- * @param {string} identifier
- * @returns {boolean}
- */
- atRuleName(identifier) {
- return Boolean(prefixes.remove[`@${identifier.toLowerCase()}`]);
- },
-
- /**
- * @param {string} identifier
- * @returns {boolean}
- */
- selector(identifier) {
- return prefixes.remove.selectors.some((/** @type {{ prefixed: string}} */ selectorObj) => {
- return identifier.toLowerCase() === selectorObj.prefixed;
- });
- },
-
- /**
- * @param {string} identifier
- * @returns {boolean}
- */
- mediaFeatureName(identifier) {
- return identifier.toLowerCase().includes('device-pixel-ratio');
- },
-
- /**
- * @param {string} identifier
- * @returns {boolean}
- */
- property(identifier) {
- return Boolean(autoprefixer.data.prefixes[prefixes.unprefixed(identifier.toLowerCase())]);
- },
-
- /**
- *
- * @param {string} prop
- * @param {string} value
- * @returns {boolean}
- */
- propertyValue(prop, value) {
- const possiblePrefixableValues =
- (prefixes.remove[prop.toLowerCase()] && prefixes.remove[prop.toLowerCase()].values) || false;
-
- return (
- possiblePrefixableValues &&
- possiblePrefixableValues.some((/** @type {{ prefixed: string}} */ valueObj) => {
- return value.toLowerCase() === valueObj.prefixed;
- })
- );
- },
-
- /**
- *
- * @param {string} value
- * @returns {string}
- */
- unprefix(value) {
- return value.replace(/-\w+-/, '');
- },
- };
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