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- "use strict";
-
- var list = require('postcss').list;
-
- module.exports = {
- /**
- * Throw special error, to tell beniary,
- * that this error is from Autoprefixer.
- */
- error: function error(text) {
- var err = new Error(text);
- err.autoprefixer = true;
- throw err;
- },
-
- /**
- * Return array, that doesn’t contain duplicates.
- */
- uniq: function uniq(array) {
- var filtered = [];
-
- for (var _iterator = array, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
- var _ref;
-
- if (_isArray) {
- if (_i >= _iterator.length) break;
- _ref = _iterator[_i++];
- } else {
- _i = _iterator.next();
- if (_i.done) break;
- _ref = _i.value;
- }
-
- var i = _ref;
-
- if (!filtered.includes(i)) {
- filtered.push(i);
- }
- }
-
- return filtered;
- },
-
- /**
- * Return "-webkit-" on "-webkit- old"
- */
- removeNote: function removeNote(string) {
- if (!string.includes(' ')) {
- return string;
- }
-
- return string.split(' ')[0];
- },
-
- /**
- * Escape RegExp symbols
- */
- escapeRegexp: function escapeRegexp(string) {
- return string.replace(/[$()*+-.?[\\\]^{|}]/g, '\\$&');
- },
-
- /**
- * Return regexp to check, that CSS string contain word
- */
- regexp: function regexp(word, escape) {
- if (escape === void 0) {
- escape = true;
- }
-
- if (escape) {
- word = this.escapeRegexp(word);
- }
-
- return new RegExp("(^|[\\s,(])(" + word + "($|[\\s(,]))", 'gi');
- },
-
- /**
- * Change comma list
- */
- editList: function editList(value, callback) {
- var origin = list.comma(value);
- var changed = callback(origin, []);
-
- if (origin === changed) {
- return value;
- }
-
- var join = value.match(/,\s*/);
- join = join ? join[0] : ', ';
- return changed.join(join);
- },
-
- /**
- * Split the selector into parts.
- * It returns 3 level deep array because selectors can be comma
- * separated (1), space separated (2), and combined (3)
- * @param {String} selector selector string
- * @return {Array<Array<Array>>} 3 level deep array of split selector
- * @see utils.test.js for examples
- */
- splitSelector: function splitSelector(selector) {
- return list.comma(selector).map(function (i) {
- return list.space(i).map(function (k) {
- return k.split(/(?=\.|#)/g);
- });
- });
- }
- };
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