Sid Gifari Advanced File Manager

✏️ Editing: js.cls.php

<?php
// phpcs:ignoreFile
/**
 * js.cls.php - modified PHP implementation of Matthias Mullie's JavaScript minifier
 *
 * @author Matthias Mullie <minify@mullie.eu>
 * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
 * @license MIT License
 */

namespace LiteSpeed\Lib\CSS_JS_MIN\Minify;

defined( 'WPINC' ) || exit;

class JS extends Minify {

/**
	 * Var-matching regex based on http://stackoverflow.com/a/9337047/802993.
	 *
	 * Note that regular expressions using that bit must have the PCRE_UTF8
	 * pattern modifier (/u) set.
	 *
	 * @internal
	 *
	 * @var string
	 */
	const REGEX_VARIABLE = '\b[$A-Z\_a-z\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\x{02c1}\x{02c6}-\x{02d1}\x{02e0}-\x{02e4}\x{02ec}\x{02ee}\x{0370}-\x{0374}\x{0376}\x{0377}\x{037a}-\x{037d}\x{0386}\x{0388}-\x{038a}\x{038c}\x{038e}-\x{03a1}\x{03a3}-\x{03f5}\x{03f7}-\x{0481}\x{048a}-\x{0527}\x{0531}-\x{0556}\x{0559}\x{0561}-\x{0587}\x{05d0}-\x{05ea}\x{05f0}-\x{05f2}\x{0620}-\x{064a}\x{066e}\x{066f}\x{0671}-\x{06d3}\x{06d5}\x{06e5}\x{06e6}\x{06ee}\x{06ef}\x{06fa}-\x{06fc}\x{06ff}\x{0710}\x{0712}-\x{072f}\x{074d}-\x{07a5}\x{07b1}\x{07ca}-\x{07ea}\x{07f4}\x{07f5}\x{07fa}\x{0800}-\x{0815}\x{081a}\x{0824}\x{0828}\x{0840}-\x{0858}\x{08a0}\x{08a2}-\x{08ac}\x{0904}-\x{0939}\x{093d}\x{0950}\x{0958}-\x{0961}\x{0971}-\x{0977}\x{0979}-\x{097f}\x{0985}-\x{098c}\x{098f}\x{0990}\x{0993}-\x{09a8}\x{09aa}-\x{09b0}\x{09b2}\x{09b6}-\x{09b9}\x{09bd}\x{09ce}\x{09dc}\x{09dd}\x{09df}-\x{09e1}\x{09f0}\x{09f1}\x{0a05}-\x{0a0a}\x{0a0f}\x{0a10}\x{0a13}-\x{0a28}\x{0a2a}-\x{0a30}\x{0a32}\x{0a33}\x{0a35}\x{0a36}\x{0a38}\x{0a39}\x{0a59}-\x{0a5c}\x{0a5e}\x{0a72}-\x{0a74}\x{0a85}-\x{0a8d}\x{0a8f}-\x{0a91}\x{0a93}-\x{0aa8}\x{0aaa}-\x{0ab0}\x{0ab2}\x{0ab3}\x{0ab5}-\x{0ab9}\x{0abd}\x{0ad0}\x{0ae0}\x{0ae1}\x{0b05}-\x{0b0c}\x{0b0f}\x{0b10}\x{0b13}-\x{0b28}\x{0b2a}-\x{0b30}\x{0b32}\x{0b33}\x{0b35}-\x{0b39}\x{0b3d}\x{0b5c}\x{0b5d}\x{0b5f}-\x{0b61}\x{0b71}\x{0b83}\x{0b85}-\x{0b8a}\x{0b8e}-\x{0b90}\x{0b92}-\x{0b95}\x{0b99}\x{0b9a}\x{0b9c}\x{0b9e}\x{0b9f}\x{0ba3}\x{0ba4}\x{0ba8}-\x{0baa}\x{0bae}-\x{0bb9}\x{0bd0}\x{0c05}-\x{0c0c}\x{0c0e}-\x{0c10}\x{0c12}-\x{0c28}\x{0c2a}-\x{0c33}\x{0c35}-\x{0c39}\x{0c3d}\x{0c58}\x{0c59}\x{0c60}\x{0c61}\x{0c85}-\x{0c8c}\x{0c8e}-\x{0c90}\x{0c92}-\x{0ca8}\x{0caa}-\x{0cb3}\x{0cb5}-\x{0cb9}\x{0cbd}\x{0cde}\x{0ce0}\x{0ce1}\x{0cf1}\x{0cf2}\x{0d05}-\x{0d0c}\x{0d0e}-\x{0d10}\x{0d12}-\x{0d3a}\x{0d3d}\x{0d4e}\x{0d60}\x{0d61}\x{0d7a}-\x{0d7f}\x{0d85}-\x{0d96}\x{0d9a}-\x{0db1}\x{0db3}-\x{0dbb}\x{0dbd}\x{0dc0}-\x{0dc6}\x{0e01}-\x{0e30}\x{0e32}\x{0e33}\x{0e40}-\x{0e46}\x{0e81}\x{0e82}\x{0e84}\x{0e87}\x{0e88}\x{0e8a}\x{0e8d}\x{0e94}-\x{0e97}\x{0e99}-\x{0e9f}\x{0ea1}-\x{0ea3}\x{0ea5}\x{0ea7}\x{0eaa}\x{0eab}\x{0ead}-\x{0eb0}\x{0eb2}\x{0eb3}\x{0ebd}\x{0ec0}-\x{0ec4}\x{0ec6}\x{0edc}-\x{0edf}\x{0f00}\x{0f40}-\x{0f47}\x{0f49}-\x{0f6c}\x{0f88}-\x{0f8c}\x{1000}-\x{102a}\x{103f}\x{1050}-\x{1055}\x{105a}-\x{105d}\x{1061}\x{1065}\x{1066}\x{106e}-\x{1070}\x{1075}-\x{1081}\x{108e}\x{10a0}-\x{10c5}\x{10c7}\x{10cd}\x{10d0}-\x{10fa}\x{10fc}-\x{1248}\x{124a}-\x{124d}\x{1250}-\x{1256}\x{1258}\x{125a}-\x{125d}\x{1260}-\x{1288}\x{128a}-\x{128d}\x{1290}-\x{12b0}\x{12b2}-\x{12b5}\x{12b8}-\x{12be}\x{12c0}\x{12c2}-\x{12c5}\x{12c8}-\x{12d6}\x{12d8}-\x{1310}\x{1312}-\x{1315}\x{1318}-\x{135a}\x{1380}-\x{138f}\x{13a0}-\x{13f4}\x{1401}-\x{166c}\x{166f}-\x{167f}\x{1681}-\x{169a}\x{16a0}-\x{16ea}\x{16ee}-\x{16f0}\x{1700}-\x{170c}\x{170e}-\x{1711}\x{1720}-\x{1731}\x{1740}-\x{1751}\x{1760}-\x{176c}\x{176e}-\x{1770}\x{1780}-\x{17b3}\x{17d7}\x{17dc}\x{1820}-\x{1877}\x{1880}-\x{18a8}\x{18aa}\x{18b0}-\x{18f5}\x{1900}-\x{191c}\x{1950}-\x{196d}\x{1970}-\x{1974}\x{1980}-\x{19ab}\x{19c1}-\x{19c7}\x{1a00}-\x{1a16}\x{1a20}-\x{1a54}\x{1aa7}\x{1b05}-\x{1b33}\x{1b45}-\x{1b4b}\x{1b83}-\x{1ba0}\x{1bae}\x{1baf}\x{1bba}-\x{1be5}\x{1c00}-\x{1c23}\x{1c4d}-\x{1c4f}\x{1c5a}-\x{1c7d}\x{1ce9}-\x{1cec}\x{1cee}-\x{1cf1}\x{1cf5}\x{1cf6}\x{1d00}-\x{1dbf}\x{1e00}-\x{1f15}\x{1f18}-\x{1f1d}\x{1f20}-\x{1f45}\x{1f48}-\x{1f4d}\x{1f50}-\x{1f57}\x{1f59}\x{1f5b}\x{1f5d}\x{1f5f}-\x{1f7d}\x{1f80}-\x{1fb4}\x{1fb6}-\x{1fbc}\x{1fbe}\x{1fc2}-\x{1fc4}\x{1fc6}-\x{1fcc}\x{1fd0}-\x{1fd3}\x{1fd6}-\x{1fdb}\x{1fe0}-\x{1fec}\x{1ff2}-\x{1ff4}\x{1ff6}-\x{1ffc}\x{2071}\x{207f}\x{2090}-\x{209c}\x{2102}\x{2107}\x{210a}-\x{2113}\x{2115}\x{2119}-\x{211d}\x{2124}\x{2126}\x{2128}\x{212a}-\x{212d}\x{212f}-\x{2139}\x{213c}-\x{213f}\x{2145}-\x{2149}\x{214e}\x{2160}-\x{2188}\x{2c00}-\x{2c2e}\x{2c30}-\x{2c5e}\x{2c60}-\x{2ce4}\x{2ceb}-\x{2cee}\x{2cf2}\x{2cf3}\x{2d00}-\x{2d25}\x{2d27}\x{2d2d}\x{2d30}-\x{2d67}\x{2d6f}\x{2d80}-\x{2d96}\x{2da0}-\x{2da6}\x{2da8}-\x{2dae}\x{2db0}-\x{2db6}\x{2db8}-\x{2dbe}\x{2dc0}-\x{2dc6}\x{2dc8}-\x{2dce}\x{2dd0}-\x{2dd6}\x{2dd8}-\x{2dde}\x{2e2f}\x{3005}-\x{3007}\x{3021}-\x{3029}\x{3031}-\x{3035}\x{3038}-\x{303c}\x{3041}-\x{3096}\x{309d}-\x{309f}\x{30a1}-\x{30fa}\x{30fc}-\x{30ff}\x{3105}-\x{312d}\x{3131}-\x{318e}\x{31a0}-\x{31ba}\x{31f0}-\x{31ff}\x{3400}-\x{4db5}\x{4e00}-\x{9fcc}\x{a000}-\x{a48c}\x{a4d0}-\x{a4fd}\x{a500}-\x{a60c}\x{a610}-\x{a61f}\x{a62a}\x{a62b}\x{a640}-\x{a66e}\x{a67f}-\x{a697}\x{a6a0}-\x{a6ef}\x{a717}-\x{a71f}\x{a722}-\x{a788}\x{a78b}-\x{a78e}\x{a790}-\x{a793}\x{a7a0}-\x{a7aa}\x{a7f8}-\x{a801}\x{a803}-\x{a805}\x{a807}-\x{a80a}\x{a80c}-\x{a822}\x{a840}-\x{a873}\x{a882}-\x{a8b3}\x{a8f2}-\x{a8f7}\x{a8fb}\x{a90a}-\x{a925}\x{a930}-\x{a946}\x{a960}-\x{a97c}\x{a984}-\x{a9b2}\x{a9cf}\x{aa00}-\x{aa28}\x{aa40}-\x{aa42}\x{aa44}-\x{aa4b}\x{aa60}-\x{aa76}\x{aa7a}\x{aa80}-\x{aaaf}\x{aab1}\x{aab5}\x{aab6}\x{aab9}-\x{aabd}\x{aac0}\x{aac2}\x{aadb}-\x{aadd}\x{aae0}-\x{aaea}\x{aaf2}-\x{aaf4}\x{ab01}-\x{ab06}\x{ab09}-\x{ab0e}\x{ab11}-\x{ab16}\x{ab20}-\x{ab26}\x{ab28}-\x{ab2e}\x{abc0}-\x{abe2}\x{ac00}-\x{d7a3}\x{d7b0}-\x{d7c6}\x{d7cb}-\x{d7fb}\x{f900}-\x{fa6d}\x{fa70}-\x{fad9}\x{fb00}-\x{fb06}\x{fb13}-\x{fb17}\x{fb1d}\x{fb1f}-\x{fb28}\x{fb2a}-\x{fb36}\x{fb38}-\x{fb3c}\x{fb3e}\x{fb40}\x{fb41}\x{fb43}\x{fb44}\x{fb46}-\x{fbb1}\x{fbd3}-\x{fd3d}\x{fd50}-\x{fd8f}\x{fd92}-\x{fdc7}\x{fdf0}-\x{fdfb}\x{fe70}-\x{fe74}\x{fe76}-\x{fefc}\x{ff21}-\x{ff3a}\x{ff41}-\x{ff5a}\x{ff66}-\x{ffbe}\x{ffc2}-\x{ffc7}\x{ffca}-\x{ffcf}\x{ffd2}-\x{ffd7}\x{ffda}-\x{ffdc}][$A-Z\_a-z\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\x{02c1}\x{02c6}-\x{02d1}\x{02e0}-\x{02e4}\x{02ec}\x{02ee}\x{0370}-\x{0374}\x{0376}\x{0377}\x{037a}-\x{037d}\x{0386}\x{0388}-\x{038a}\x{038c}\x{038e}-\x{03a1}\x{03a3}-\x{03f5}\x{03f7}-\x{0481}\x{048a}-\x{0527}\x{0531}-\x{0556}\x{0559}\x{0561}-\x{0587}\x{05d0}-\x{05ea}\x{05f0}-\x{05f2}\x{0620}-\x{064a}\x{066e}\x{066f}\x{0671}-\x{06d3}\x{06d5}\x{06e5}\x{06e6}\x{06ee}\x{06ef}\x{06fa}-\x{06fc}\x{06ff}\x{0710}\x{0712}-\x{072f}\x{074d}-\x{07a5}\x{07b1}\x{07ca}-\x{07ea}\x{07f4}\x{07f5}\x{07fa}\x{0800}-\x{0815}\x{081a}\x{0824}\x{0828}\x{0840}-\x{0858}\x{08a0}\x{08a2}-\x{08ac}\x{0904}-\x{0939}\x{093d}\x{0950}\x{0958}-\x{0961}\x{0971}-\x{0977}\x{0979}-\x{097f}\x{0985}-\x{098c}\x{098f}\x{0990}\x{0993}-\x{09a8}\x{09aa}-\x{09b0}\x{09b2}\x{09b6}-\x{09b9}\x{09bd}\x{09ce}\x{09dc}\x{09dd}\x{09df}-\x{09e1}\x{09f0}\x{09f1}\x{0a05}-\x{0a0a}\x{0a0f}\x{0a10}\x{0a13}-\x{0a28}\x{0a2a}-\x{0a30}\x{0a32}\x{0a33}\x{0a35}\x{0a36}\x{0a38}\x{0a39}\x{0a59}-\x{0a5c}\x{0a5e}\x{0a72}-\x{0a74}\x{0a85}-\x{0a8d}\x{0a8f}-\x{0a91}\x{0a93}-\x{0aa8}\x{0aaa}-\x{0ab0}\x{0ab2}\x{0ab3}\x{0ab5}-\x{0ab9}\x{0abd}\x{0ad0}\x{0ae0}\x{0ae1}\x{0b05}-\x{0b0c}\x{0b0f}\x{0b10}\x{0b13}-\x{0b28}\x{0b2a}-\x{0b30}\x{0b32}\x{0b33}\x{0b35}-\x{0b39}\x{0b3d}\x{0b5c}\x{0b5d}\x{0b5f}-\x{0b61}\x{0b71}\x{0b83}\x{0b85}-\x{0b8a}\x{0b8e}-\x{0b90}\x{0b92}-\x{0b95}\x{0b99}\x{0b9a}\x{0b9c}\x{0b9e}\x{0b9f}\x{0ba3}\x{0ba4}\x{0ba8}-\x{0baa}\x{0bae}-\x{0bb9}\x{0bd0}\x{0c05}-\x{0c0c}\x{0c0e}-\x{0c10}\x{0c12}-\x{0c28}\x{0c2a}-\x{0c33}\x{0c35}-\x{0c39}\x{0c3d}\x{0c58}\x{0c59}\x{0c60}\x{0c61}\x{0c85}-\x{0c8c}\x{0c8e}-\x{0c90}\x{0c92}-\x{0ca8}\x{0caa}-\x{0cb3}\x{0cb5}-\x{0cb9}\x{0cbd}\x{0cde}\x{0ce0}\x{0ce1}\x{0cf1}\x{0cf2}\x{0d05}-\x{0d0c}\x{0d0e}-\x{0d10}\x{0d12}-\x{0d3a}\x{0d3d}\x{0d4e}\x{0d60}\x{0d61}\x{0d7a}-\x{0d7f}\x{0d85}-\x{0d96}\x{0d9a}-\x{0db1}\x{0db3}-\x{0dbb}\x{0dbd}\x{0dc0}-\x{0dc6}\x{0e01}-\x{0e30}\x{0e32}\x{0e33}\x{0e40}-\x{0e46}\x{0e81}\x{0e82}\x{0e84}\x{0e87}\x{0e88}\x{0e8a}\x{0e8d}\x{0e94}-\x{0e97}\x{0e99}-\x{0e9f}\x{0ea1}-\x{0ea3}\x{0ea5}\x{0ea7}\x{0eaa}\x{0eab}\x{0ead}-\x{0eb0}\x{0eb2}\x{0eb3}\x{0ebd}\x{0ec0}-\x{0ec4}\x{0ec6}\x{0edc}-\x{0edf}\x{0f00}\x{0f40}-\x{0f47}\x{0f49}-\x{0f6c}\x{0f88}-\x{0f8c}\x{1000}-\x{102a}\x{103f}\x{1050}-\x{1055}\x{105a}-\x{105d}\x{1061}\x{1065}\x{1066}\x{106e}-\x{1070}\x{1075}-\x{1081}\x{108e}\x{10a0}-\x{10c5}\x{10c7}\x{10cd}\x{10d0}-\x{10fa}\x{10fc}-\x{1248}\x{124a}-\x{124d}\x{1250}-\x{1256}\x{1258}\x{125a}-\x{125d}\x{1260}-\x{1288}\x{128a}-\x{128d}\x{1290}-\x{12b0}\x{12b2}-\x{12b5}\x{12b8}-\x{12be}\x{12c0}\x{12c2}-\x{12c5}\x{12c8}-\x{12d6}\x{12d8}-\x{1310}\x{1312}-\x{1315}\x{1318}-\x{135a}\x{1380}-\x{138f}\x{13a0}-\x{13f4}\x{1401}-\x{166c}\x{166f}-\x{167f}\x{1681}-\x{169a}\x{16a0}-\x{16ea}\x{16ee}-\x{16f0}\x{1700}-\x{170c}\x{170e}-\x{1711}\x{1720}-\x{1731}\x{1740}-\x{1751}\x{1760}-\x{176c}\x{176e}-\x{1770}\x{1780}-\x{17b3}\x{17d7}\x{17dc}\x{1820}-\x{1877}\x{1880}-\x{18a8}\x{18aa}\x{18b0}-\x{18f5}\x{1900}-\x{191c}\x{1950}-\x{196d}\x{1970}-\x{1974}\x{1980}-\x{19ab}\x{19c1}-\x{19c7}\x{1a00}-\x{1a16}\x{1a20}-\x{1a54}\x{1aa7}\x{1b05}-\x{1b33}\x{1b45}-\x{1b4b}\x{1b83}-\x{1ba0}\x{1bae}\x{1baf}\x{1bba}-\x{1be5}\x{1c00}-\x{1c23}\x{1c4d}-\x{1c4f}\x{1c5a}-\x{1c7d}\x{1ce9}-\x{1cec}\x{1cee}-\x{1cf1}\x{1cf5}\x{1cf6}\x{1d00}-\x{1dbf}\x{1e00}-\x{1f15}\x{1f18}-\x{1f1d}\x{1f20}-\x{1f45}\x{1f48}-\x{1f4d}\x{1f50}-\x{1f57}\x{1f59}\x{1f5b}\x{1f5d}\x{1f5f}-\x{1f7d}\x{1f80}-\x{1fb4}\x{1fb6}-\x{1fbc}\x{1fbe}\x{1fc2}-\x{1fc4}\x{1fc6}-\x{1fcc}\x{1fd0}-\x{1fd3}\x{1fd6}-\x{1fdb}\x{1fe0}-\x{1fec}\x{1ff2}-\x{1ff4}\x{1ff6}-\x{1ffc}\x{2071}\x{207f}\x{2090}-\x{209c}\x{2102}\x{2107}\x{210a}-\x{2113}\x{2115}\x{2119}-\x{211d}\x{2124}\x{2126}\x{2128}\x{212a}-\x{212d}\x{212f}-\x{2139}\x{213c}-\x{213f}\x{2145}-\x{2149}\x{214e}\x{2160}-\x{2188}\x{2c00}-\x{2c2e}\x{2c30}-\x{2c5e}\x{2c60}-\x{2ce4}\x{2ceb}-\x{2cee}\x{2cf2}\x{2cf3}\x{2d00}-\x{2d25}\x{2d27}\x{2d2d}\x{2d30}-\x{2d67}\x{2d6f}\x{2d80}-\x{2d96}\x{2da0}-\x{2da6}\x{2da8}-\x{2dae}\x{2db0}-\x{2db6}\x{2db8}-\x{2dbe}\x{2dc0}-\x{2dc6}\x{2dc8}-\x{2dce}\x{2dd0}-\x{2dd6}\x{2dd8}-\x{2dde}\x{2e2f}\x{3005}-\x{3007}\x{3021}-\x{3029}\x{3031}-\x{3035}\x{3038}-\x{303c}\x{3041}-\x{3096}\x{309d}-\x{309f}\x{30a1}-\x{30fa}\x{30fc}-\x{30ff}\x{3105}-\x{312d}\x{3131}-\x{318e}\x{31a0}-\x{31ba}\x{31f0}-\x{31ff}\x{3400}-\x{4db5}\x{4e00}-\x{9fcc}\x{a000}-\x{a48c}\x{a4d0}-\x{a4fd}\x{a500}-\x{a60c}\x{a610}-\x{a61f}\x{a62a}\x{a62b}\x{a640}-\x{a66e}\x{a67f}-\x{a697}\x{a6a0}-\x{a6ef}\x{a717}-\x{a71f}\x{a722}-\x{a788}\x{a78b}-\x{a78e}\x{a790}-\x{a793}\x{a7a0}-\x{a7aa}\x{a7f8}-\x{a801}\x{a803}-\x{a805}\x{a807}-\x{a80a}\x{a80c}-\x{a822}\x{a840}-\x{a873}\x{a882}-\x{a8b3}\x{a8f2}-\x{a8f7}\x{a8fb}\x{a90a}-\x{a925}\x{a930}-\x{a946}\x{a960}-\x{a97c}\x{a984}-\x{a9b2}\x{a9cf}\x{aa00}-\x{aa28}\x{aa40}-\x{aa42}\x{aa44}-\x{aa4b}\x{aa60}-\x{aa76}\x{aa7a}\x{aa80}-\x{aaaf}\x{aab1}\x{aab5}\x{aab6}\x{aab9}-\x{aabd}\x{aac0}\x{aac2}\x{aadb}-\x{aadd}\x{aae0}-\x{aaea}\x{aaf2}-\x{aaf4}\x{ab01}-\x{ab06}\x{ab09}-\x{ab0e}\x{ab11}-\x{ab16}\x{ab20}-\x{ab26}\x{ab28}-\x{ab2e}\x{abc0}-\x{abe2}\x{ac00}-\x{d7a3}\x{d7b0}-\x{d7c6}\x{d7cb}-\x{d7fb}\x{f900}-\x{fa6d}\x{fa70}-\x{fad9}\x{fb00}-\x{fb06}\x{fb13}-\x{fb17}\x{fb1d}\x{fb1f}-\x{fb28}\x{fb2a}-\x{fb36}\x{fb38}-\x{fb3c}\x{fb3e}\x{fb40}\x{fb41}\x{fb43}\x{fb44}\x{fb46}-\x{fbb1}\x{fbd3}-\x{fd3d}\x{fd50}-\x{fd8f}\x{fd92}-\x{fdc7}\x{fdf0}-\x{fdfb}\x{fe70}-\x{fe74}\x{fe76}-\x{fefc}\x{ff21}-\x{ff3a}\x{ff41}-\x{ff5a}\x{ff66}-\x{ffbe}\x{ffc2}-\x{ffc7}\x{ffca}-\x{ffcf}\x{ffd2}-\x{ffd7}\x{ffda}-\x{ffdc}0-9\x{0300}-\x{036f}\x{0483}-\x{0487}\x{0591}-\x{05bd}\x{05bf}\x{05c1}\x{05c2}\x{05c4}\x{05c5}\x{05c7}\x{0610}-\x{061a}\x{064b}-\x{0669}\x{0670}\x{06d6}-\x{06dc}\x{06df}-\x{06e4}\x{06e7}\x{06e8}\x{06ea}-\x{06ed}\x{06f0}-\x{06f9}\x{0711}\x{0730}-\x{074a}\x{07a6}-\x{07b0}\x{07c0}-\x{07c9}\x{07eb}-\x{07f3}\x{0816}-\x{0819}\x{081b}-\x{0823}\x{0825}-\x{0827}\x{0829}-\x{082d}\x{0859}-\x{085b}\x{08e4}-\x{08fe}\x{0900}-\x{0903}\x{093a}-\x{093c}\x{093e}-\x{094f}\x{0951}-\x{0957}\x{0962}\x{0963}\x{0966}-\x{096f}\x{0981}-\x{0983}\x{09bc}\x{09be}-\x{09c4}\x{09c7}\x{09c8}\x{09cb}-\x{09cd}\x{09d7}\x{09e2}\x{09e3}\x{09e6}-\x{09ef}\x{0a01}-\x{0a03}\x{0a3c}\x{0a3e}-\x{0a42}\x{0a47}\x{0a48}\x{0a4b}-\x{0a4d}\x{0a51}\x{0a66}-\x{0a71}\x{0a75}\x{0a81}-\x{0a83}\x{0abc}\x{0abe}-\x{0ac5}\x{0ac7}-\x{0ac9}\x{0acb}-\x{0acd}\x{0ae2}\x{0ae3}\x{0ae6}-\x{0aef}\x{0b01}-\x{0b03}\x{0b3c}\x{0b3e}-\x{0b44}\x{0b47}\x{0b48}\x{0b4b}-\x{0b4d}\x{0b56}\x{0b57}\x{0b62}\x{0b63}\x{0b66}-\x{0b6f}\x{0b82}\x{0bbe}-\x{0bc2}\x{0bc6}-\x{0bc8}\x{0bca}-\x{0bcd}\x{0bd7}\x{0be6}-\x{0bef}\x{0c01}-\x{0c03}\x{0c3e}-\x{0c44}\x{0c46}-\x{0c48}\x{0c4a}-\x{0c4d}\x{0c55}\x{0c56}\x{0c62}\x{0c63}\x{0c66}-\x{0c6f}\x{0c82}\x{0c83}\x{0cbc}\x{0cbe}-\x{0cc4}\x{0cc6}-\x{0cc8}\x{0cca}-\x{0ccd}\x{0cd5}\x{0cd6}\x{0ce2}\x{0ce3}\x{0ce6}-\x{0cef}\x{0d02}\x{0d03}\x{0d3e}-\x{0d44}\x{0d46}-\x{0d48}\x{0d4a}-\x{0d4d}\x{0d57}\x{0d62}\x{0d63}\x{0d66}-\x{0d6f}\x{0d82}\x{0d83}\x{0dca}\x{0dcf}-\x{0dd4}\x{0dd6}\x{0dd8}-\x{0ddf}\x{0df2}\x{0df3}\x{0e31}\x{0e34}-\x{0e3a}\x{0e47}-\x{0e4e}\x{0e50}-\x{0e59}\x{0eb1}\x{0eb4}-\x{0eb9}\x{0ebb}\x{0ebc}\x{0ec8}-\x{0ecd}\x{0ed0}-\x{0ed9}\x{0f18}\x{0f19}\x{0f20}-\x{0f29}\x{0f35}\x{0f37}\x{0f39}\x{0f3e}\x{0f3f}\x{0f71}-\x{0f84}\x{0f86}\x{0f87}\x{0f8d}-\x{0f97}\x{0f99}-\x{0fbc}\x{0fc6}\x{102b}-\x{103e}\x{1040}-\x{1049}\x{1056}-\x{1059}\x{105e}-\x{1060}\x{1062}-\x{1064}\x{1067}-\x{106d}\x{1071}-\x{1074}\x{1082}-\x{108d}\x{108f}-\x{109d}\x{135d}-\x{135f}\x{1712}-\x{1714}\x{1732}-\x{1734}\x{1752}\x{1753}\x{1772}\x{1773}\x{17b4}-\x{17d3}\x{17dd}\x{17e0}-\x{17e9}\x{180b}-\x{180d}\x{1810}-\x{1819}\x{18a9}\x{1920}-\x{192b}\x{1930}-\x{193b}\x{1946}-\x{194f}\x{19b0}-\x{19c0}\x{19c8}\x{19c9}\x{19d0}-\x{19d9}\x{1a17}-\x{1a1b}\x{1a55}-\x{1a5e}\x{1a60}-\x{1a7c}\x{1a7f}-\x{1a89}\x{1a90}-\x{1a99}\x{1b00}-\x{1b04}\x{1b34}-\x{1b44}\x{1b50}-\x{1b59}\x{1b6b}-\x{1b73}\x{1b80}-\x{1b82}\x{1ba1}-\x{1bad}\x{1bb0}-\x{1bb9}\x{1be6}-\x{1bf3}\x{1c24}-\x{1c37}\x{1c40}-\x{1c49}\x{1c50}-\x{1c59}\x{1cd0}-\x{1cd2}\x{1cd4}-\x{1ce8}\x{1ced}\x{1cf2}-\x{1cf4}\x{1dc0}-\x{1de6}\x{1dfc}-\x{1dff}\x{200c}\x{200d}\x{203f}\x{2040}\x{2054}\x{20d0}-\x{20dc}\x{20e1}\x{20e5}-\x{20f0}\x{2cef}-\x{2cf1}\x{2d7f}\x{2de0}-\x{2dff}\x{302a}-\x{302f}\x{3099}\x{309a}\x{a620}-\x{a629}\x{a66f}\x{a674}-\x{a67d}\x{a69f}\x{a6f0}\x{a6f1}\x{a802}\x{a806}\x{a80b}\x{a823}-\x{a827}\x{a880}\x{a881}\x{a8b4}-\x{a8c4}\x{a8d0}-\x{a8d9}\x{a8e0}-\x{a8f1}\x{a900}-\x{a909}\x{a926}-\x{a92d}\x{a947}-\x{a953}\x{a980}-\x{a983}\x{a9b3}-\x{a9c0}\x{a9d0}-\x{a9d9}\x{aa29}-\x{aa36}\x{aa43}\x{aa4c}\x{aa4d}\x{aa50}-\x{aa59}\x{aa7b}\x{aab0}\x{aab2}-\x{aab4}\x{aab7}\x{aab8}\x{aabe}\x{aabf}\x{aac1}\x{aaeb}-\x{aaef}\x{aaf5}\x{aaf6}\x{abe3}-\x{abea}\x{abec}\x{abed}\x{abf0}-\x{abf9}\x{fb1e}\x{fe00}-\x{fe0f}\x{fe20}-\x{fe26}\x{fe33}\x{fe34}\x{fe4d}-\x{fe4f}\x{ff10}-\x{ff19}\x{ff3f}]*\b';

/**
	 * Full list of JavaScript reserved words.
	 * Will be loaded from /data/js/keywords_reserved.txt.
	 *
	 * @see https://mathiasbynens.be/notes/reserved-keywords
	 *
	 * @var string[]
	 */
	protected $keywordsReserved = array();

/**
	 * List of JavaScript reserved words that accept a <variable, value, ...>
	 * after them. Some end of lines are not the end of a statement, like with
	 * these keywords.
	 *
	 * E.g.: we shouldn't insert a ; after this else
	 * else
	 *     console.log('this is quite fine')
	 *
	 * Will be loaded from /data/js/keywords_before.txt
	 *
	 * @var string[]
	 */
	protected $keywordsBefore = array();

/**
	 * List of JavaScript reserved words that accept a <variable, value, ...>
	 * before them. Some end of lines are not the end of a statement, like when
	 * continued by one of these keywords on the newline.
	 *
	 * E.g.: we shouldn't insert a ; before this instanceof
	 * variable
	 *     instanceof String
	 *
	 * Will be loaded from /data/js/keywords_after.txt
	 *
	 * @var string[]
	 */
	protected $keywordsAfter = array();

/**
	 * List of all JavaScript operators.
	 *
	 * Will be loaded from /data/js/operators.txt
	 *
	 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators
	 *
	 * @var string[]
	 */
	protected $operators = array();

/**
	 * List of JavaScript operators that accept a <variable, value, ...> after
	 * them. Some end of lines are not the end of a statement, like with these
	 * operators.
	 *
	 * Note: Most operators are fine, we've only removed ++ and --.
	 * ++ & -- have to be joined with the value they're in-/decrementing.
	 *
	 * Will be loaded from /data/js/operators_before.txt
	 *
	 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators
	 *
	 * @var string[]
	 */
	protected $operatorsBefore = array();

/**
	 * List of JavaScript operators that accept a <variable, value, ...> before
	 * them. Some end of lines are not the end of a statement, like when
	 * continued by one of these operators on the newline.
	 *
	 * Note: Most operators are fine, we've only removed ), ], ++, --, ! and ~.
	 * There can't be a newline separating ! or ~ and whatever it is negating.
	 * ++ & -- have to be joined with the value they're in-/decrementing.
	 * ) & ] are "special" in that they have lots or usecases. () for example
	 * is used for function calls, for grouping, in if () and for (), ...
	 *
	 * Will be loaded from /data/js/operators_after.txt
	 *
	 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators
	 *
	 * @var string[]
	 */
	protected $operatorsAfter = array();

public function __construct() {
		call_user_func_array( array( '\\LiteSpeed\\Lib\\CSS_JS_MIN\\Minify\\Minify', '__construct' ), func_get_args() );

$dataDir                = __DIR__ . '/data/js/';
		$options                = FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES;
		$this->keywordsReserved = file( $dataDir . 'keywords_reserved.txt', $options );
		$this->keywordsBefore   = file( $dataDir . 'keywords_before.txt', $options );
		$this->keywordsAfter    = file( $dataDir . 'keywords_after.txt', $options );
		$this->operators        = file( $dataDir . 'operators.txt', $options );
		$this->operatorsBefore  = file( $dataDir . 'operators_before.txt', $options );
		$this->operatorsAfter   = file( $dataDir . 'operators_after.txt', $options );
	}

/**
	 * Minify the data.
	 * Perform JS optimizations.
	 *
	 * @param string[optional] $path Path to write the data to
	 *
	 * @return string The minified data
	 */
	public function execute( $path = null ) {
		$content = '';

/*
		 * Let's first take out strings, comments and regular expressions.
		 * All of these can contain JS code-like characters, and we should make
		 * sure any further magic ignores anything inside of these.
		 *
		 * Consider this example, where we should not strip any whitespace:
		 * var str = "a   test";
		 *
		 * Comments will be removed altogether, strings and regular expressions
		 * will be replaced by placeholder text, which we'll restore later.
		 */
		$this->extractStrings( '\'"`' );
		$this->stripComments();
		$this->extractRegex();

// loop files
		foreach ( $this->data as $source => $js ) {
			// take out strings, comments & regex (for which we've registered
			// the regexes just a few lines earlier)
			$js = $this->replace( $js );

$js = $this->propertyNotation( $js );
			$js = $this->shortenBools( $js );
			$js = $this->stripWhitespace( $js );

// combine js: separating the scripts by a ;
			$content .= $js . ';';
		}

// clean up leftover `;`s from the combination of multiple scripts
		$content = ltrim( $content, ';' );
		$content = (string) substr( $content, 0, -1 );

/*
		 * Earlier, we extracted strings & regular expressions and replaced them
		 * with placeholder text. This will restore them.
		 */
		$content = $this->restoreExtractedData( $content );

return $content;
	}

/**
	 * Strip comments from source code.
	 */
	protected function stripComments() {
		$this->stripMultilineComments();

// single-line comments
		$this->registerPattern( '/\/\/.*$/m', '' );
	}

/**
	 * JS can have /-delimited regular expressions, like: /ab+c/.match(string).
	 *
	 * The content inside the regex can contain characters that may be confused
	 * for JS code: e.g. it could contain whitespace it needs to match & we
	 * don't want to strip whitespace in there.
	 *
	 * The regex can be pretty simple: we don't have to care about comments,
	 * (which also use slashes) because stripComments() will have stripped those
	 * already.
	 *
	 * This method will replace all string content with simple REGEX#
	 * placeholder text, so we've rid all regular expressions from characters
	 * that may be misinterpreted. Original regex content will be saved in
	 * $this->extracted and after doing all other minifying, we can restore the
	 * original content via restoreRegex()
	 */
	protected function extractRegex() {
		// PHP only supports $this inside anonymous functions since 5.4
		$minifier = $this;
		$callback = function ( $match ) use ( $minifier ) {
			$count                               = count( $minifier->extracted );
			$placeholder                         = '"' . $count . '"';
			$minifier->extracted[ $placeholder ] = $match[0];

return $placeholder;
		};

// match all chars except `/` and `\`
		// `\` is allowed though, along with whatever char follows (which is the
		// one being escaped)
		// this should allow all chars, except for an unescaped `/` (= the one
		// closing the regex)
		// then also ignore bare `/` inside `[]`, where they don't need to be
		// escaped: anything inside `[]` can be ignored safely
		$pattern = '\\/(?!\*)(?:[^\\[\\/\\\\\n\r]++|(?:\\\\.)++|(?:\\[(?:[^\\]\\\\\n\r]++|(?:\\\\.)++)++\\])++)++\\/[gimuy]*';

// a regular expression can only be followed by a few operators or some
		// of the RegExp methods (a `\` followed by a variable or value is
		// likely part of a division, not a regex)
		$keywords             = array( 'do', 'in', 'new', 'else', 'throw', 'yield', 'delete', 'return', 'typeof' );
		$before               = '(^|[=:,;\+\-\*\?\/\}$\{\[&\|!]|' . implode( '|', $keywords ) . ')\s*';
		$propertiesAndMethods = array(
			// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#Properties_2
			'constructor',
			'flags',
			'global',
			'ignoreCase',
			'multiline',
			'source',
			'sticky',
			'unicode',
			// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#Methods_2
			'compile(',
			'exec(',
			'test(',
			'toSource(',
			'toString(',
		);
		$delimiters           = array_fill( 0, count( $propertiesAndMethods ), '/' );
		$propertiesAndMethods = array_map( 'preg_quote', $propertiesAndMethods, $delimiters );
		$after                = '(?=\s*([\.,;:$\}&\|+]|\/\/|$|\.(' . implode( '|', $propertiesAndMethods ) . ')))';
		$this->registerPattern( '/' . $before . '\K' . $pattern . $after . '/', $callback );

// regular expressions following a `)` are rather annoying to detect...
		// quite often, `/` after `)` is a division operator & if it happens to
		// be followed by another one (or a comment), it is likely to be
		// confused for a regular expression
		// however, it's perfectly possible for a regex to follow a `)`: after
		// a single-line `if()`, `while()`, ... statement, for example
		// since, when they occur like that, they're always the start of a
		// statement, there's only a limited amount of ways they can be useful:
		// by calling the regex methods directly
		// if a regex following `)` is not followed by `.<property or method>`,
		// it's quite likely not a regex
		$before = '\)\s*';
		$after  = '(?=\s*\.(' . implode( '|', $propertiesAndMethods ) . '))';
		$this->registerPattern( '/' . $before . '\K' . $pattern . $after . '/', $callback );

// 1 more edge case: a regex can be followed by a lot more operators or
		// keywords if there's a newline (ASI) in between, where the operator
		// actually starts a new statement
		// (https://github.com/matthiasmullie/minify/issues/56)
		$operators  = $this->getOperatorsForRegex( $this->operatorsBefore, '/' );
		$operators += $this->getOperatorsForRegex( $this->keywordsReserved, '/' );
		$after      = '(?=\s*\n\s*(' . implode( '|', $operators ) . '))';
		$this->registerPattern( '/' . $pattern . $after . '/', $callback );
	}

/**
	 * Strip whitespace.
	 *
	 * We won't strip *all* whitespace, but as much as possible. The thing that
	 * we'll preserve are newlines we're unsure about.
	 * JavaScript doesn't require statements to be terminated with a semicolon.
	 * It will automatically fix missing semicolons with ASI (automatic semi-
	 * colon insertion) at the end of line causing errors (without semicolon.)
	 *
	 * Because it's sometimes hard to tell if a newline is part of a statement
	 * that should be terminated or not, we'll just leave some of them alone.
	 *
	 * @param string $content The content to strip the whitespace for
	 *
	 * @return string
	 */
	protected function stripWhitespace( $content ) {
		// uniform line endings, make them all line feed
		$content = str_replace( array( "\r\n", "\r" ), "\n", $content );

// collapse all non-line feed whitespace into a single space
		$content = preg_replace( '/[^\S\n]+/', ' ', $content );

// strip leading & trailing whitespace
		$content = str_replace( array( " \n", "\n " ), "\n", $content );

// collapse consecutive line feeds into just 1
		$content = preg_replace( '/\n+/', "\n", $content );

$operatorsBefore = $this->getOperatorsForRegex( $this->operatorsBefore, '/' );
		$operatorsAfter  = $this->getOperatorsForRegex( $this->operatorsAfter, '/' );
		$operators       = $this->getOperatorsForRegex( $this->operators, '/' );
		$keywordsBefore  = $this->getKeywordsForRegex( $this->keywordsBefore, '/' );
		$keywordsAfter   = $this->getKeywordsForRegex( $this->keywordsAfter, '/' );

// strip whitespace that ends in (or next line begin with) an operator
		// that allows statements to be broken up over multiple lines
		unset( $operatorsBefore['+'], $operatorsBefore['-'], $operatorsAfter['+'], $operatorsAfter['-'] );
		$content = preg_replace(
			array(
				'/(' . implode( '|', $operatorsBefore ) . ')\s+/',
				'/\s+(' . implode( '|', $operatorsAfter ) . ')/',
			),
			'\\1',
			$content
		);

// make sure + and - can't be mistaken for, or joined into ++ and --
		$content = preg_replace(
			array(
				'/(?<![\+\-])\s*([\+\-])(?![\+\-])/',
				'/(?<![\+\-])([\+\-])\s*(?![\+\-])/',
			),
			'\\1',
			$content
		);

// collapse whitespace around reserved words into single space
		$content = preg_replace( '/(^|[;\}\s])\K(' . implode( '|', $keywordsBefore ) . ')\s+/', '\\2 ', $content );
		$content = preg_replace( '/\s+(' . implode( '|', $keywordsAfter ) . ')(?=([;\{\s]|$))/', ' \\1', $content );

/*
		 * We didn't strip whitespace after a couple of operators because they
		 * could be used in different contexts and we can't be sure it's ok to
		 * strip the newlines. However, we can safely strip any non-line feed
		 * whitespace that follows them.
		 */
		$operatorsDiffBefore = array_diff( $operators, $operatorsBefore );
		$operatorsDiffAfter  = array_diff( $operators, $operatorsAfter );
		$content             = preg_replace( '/(' . implode( '|', $operatorsDiffBefore ) . ')[^\S\n]+/', '\\1', $content );
		$content             = preg_replace( '/[^\S\n]+(' . implode( '|', $operatorsDiffAfter ) . ')/', '\\1', $content );

/*
		 * Whitespace after `return` can be omitted in a few occasions
		 * (such as when followed by a string or regex)
		 * Same for whitespace in between `)` and `{`, or between `{` and some
		 * keywords.
		 */
		$content = preg_replace( '/\breturn\s+(["\'\/\+\-])/', 'return$1', $content );
		$content = preg_replace( '/\)\s+\{/', '){', $content );
		$content = preg_replace( '/}\n(else|catch|finally)\b/', '}$1', $content );

/*
		 * Get rid of double semicolons, except where they can be used like:
		 * "for(v=1,_=b;;)", "for(v=1;;v++)" or "for(;;ja||(ja=true))".
		 * I'll safeguard these double semicolons inside for-loops by
		 * temporarily replacing them with an invalid condition: they won't have
		 * a double semicolon and will be easy to spot to restore afterwards.
		 */
		$content = preg_replace( '/\bfor$([^;]*);;([^;]*)$/', 'for(\\1;-;\\2)', $content );
		$content = preg_replace( '/;+/', ';', $content );
		$content = preg_replace( '/\bfor$([^;]*);-;([^;]*)$/', 'for(\\1;;\\2)', $content );

/*
		 * Next, we'll be removing all semicolons where ASI kicks in.
		 * for-loops however, can have an empty body (ending in only a
		 * semicolon), like: `for(i=1;i<3;i++);`, of `for(i in list);`
		 * Here, nothing happens during the loop; it's just used to keep
		 * increasing `i`. With that ; omitted, the next line would be expected
		 * to be the for-loop's body... Same goes for while loops.
		 * I'm going to double that semicolon (if any) so after the next line,
		 * which strips semicolons here & there, we're still left with this one.
		 * Note the special recursive construct in the three inner parts of the for:
		 * (\{([^\{\}]*(?-2))*[^\{\}]*\})? - it is intended to match inline
		 * functions bodies, e.g.: i<arr.map(function(e){return e}).length.
		 * Also note that the construct is applied only once and multiplied
		 * for each part of the for, otherwise it risks a catastrophic backtracking.
		 * The limitation is that it will not allow closures in more than one
		 * of the three parts for a specific for() case.
		 * REGEX throwing catastrophic backtracking: $content = preg_replace('/(for$[^;\{]*(\{([^\{\}]*(?-2))*[^\{\}]*\})?[^;\{]*;[^;\{]*(\{([^\{\}]*(?-2))*[^\{\}]*\})?[^;\{]*;[^;\{]*(\{([^\{\}]*(?-2))*[^\{\}]*\})?[^;\{]*$);(\}|$)/s', '\\1;;\\8', $content);
		 */
		$content = preg_replace( '/(for$(?:[^;\{]*|[^;\{]*function[^;\{]*(\{([^\{\}]*(?-2))*[^\{\}]*\})?[^;\{]*);[^;\{]*;[^;\{]*$);(\}|$)/s', '\\1;;\\4', $content );
		$content = preg_replace( '/(for$[^;\{]*;(?:[^;\{]*|[^;\{]*function[^;\{]*(\{([^\{\}]*(?-2))*[^\{\}]*\})?[^;\{]*);[^;\{]*$);(\}|$)/s', '\\1;;\\4', $content );
		$content = preg_replace( '/(for$[^;\{]*;[^;\{]*;(?:[^;\{]*|[^;\{]*function[^;\{]*(\{([^\{\}]*(?-2))*[^\{\}]*\})?[^;\{]*)$);(\}|$)/s', '\\1;;\\4', $content );

$content = preg_replace( '/(for$[^;\{]+\s+in\s+[^;\{]+$);(\}|$)/s', '\\1;;\\2', $content );

/*
		 * Do the same for the if's that don't have a body but are followed by ;}
		 */
		$content = preg_replace( '/(\bif\s*$[^{;]*$);\}/s', '\\1;;}', $content );

/*
		 * Below will also keep `;` after a `do{}while();` along with `while();`
		 * While these could be stripped after do-while, detecting this
		 * distinction is cumbersome, so I'll play it safe and make sure `;`
		 * after any kind of `while` is kept.
		 */
		$content = preg_replace( '/(while$[^;\{]+$);(\}|$)/s', '\\1;;\\2', $content );

/*
		 * We also can't strip empty else-statements. Even though they're
		 * useless and probably shouldn't be in the code in the first place, we
		 * shouldn't be stripping the `;` that follows it as it breaks the code.
		 * We can just remove those useless else-statements completely.
		 *
		 * @see https://github.com/matthiasmullie/minify/issues/91
		 */
		$content = preg_replace( '/else;/s', '', $content );

/*
		 * We also don't really want to terminate statements followed by closing
		 * curly braces (which we've ignored completely up until now) or end-of-
		 * script: ASI will kick in here & we're all about minifying.
		 * Semicolons at beginning of the file don't make any sense either.
		 */
		$content = preg_replace( '/;(\}|$)/s', '\\1', $content );
		$content = ltrim( $content, ';' );

// get rid of remaining whitespace af beginning/end
		return trim( $content );
	}

/**
	 * We'll strip whitespace around certain operators with regular expressions.
	 * This will prepare the given array by escaping all characters.
	 *
	 * @param string[] $operators
	 * @param string   $delimiter
	 *
	 * @return string[]
	 */
	protected function getOperatorsForRegex( array $operators, $delimiter = '/' ) {
		// escape operators for use in regex
		$delimiters = array_fill( 0, count( $operators ), $delimiter );
		$escaped    = array_map( 'preg_quote', $operators, $delimiters );

$operators = array_combine( $operators, $escaped );

// ignore + & - for now, they'll get special treatment
		unset( $operators['+'], $operators['-'] );

// dot can not just immediately follow a number; it can be confused for
		// decimal point, or calling a method on it, e.g. 42 .toString()
		$operators['.'] = '(?<![0-9]\s)\.';

// don't confuse = with other assignment shortcuts (e.g. +=)
		$chars          = preg_quote( '+-*\=<>%&|', $delimiter );
		$operators['='] = '(?<![' . $chars . '])\=';

return $operators;
	}

/**
	 * We'll strip whitespace around certain keywords with regular expressions.
	 * This will prepare the given array by escaping all characters.
	 *
	 * @param string[] $keywords
	 * @param string   $delimiter
	 *
	 * @return string[]
	 */
	protected function getKeywordsForRegex( array $keywords, $delimiter = '/' ) {
		// escape keywords for use in regex
		$delimiter = array_fill( 0, count( $keywords ), $delimiter );
		$escaped   = array_map( 'preg_quote', $keywords, $delimiter );

// add word boundaries
		array_walk(
			$keywords,
			function ( $value ) {
				return '\b' . $value . '\b';
			}
		);

$keywords = array_combine( $keywords, $escaped );

return $keywords;
	}

/**
	 * Replaces all occurrences of array['key'] by array.key.
	 *
	 * @param string $content
	 *
	 * @return string
	 */
	protected function propertyNotation( $content ) {
		// PHP only supports $this inside anonymous functions since 5.4
		$minifier = $this;
		$keywords = $this->keywordsReserved;
		$callback = function ( $match ) use ( $minifier, $keywords ) {
			$property = trim( $minifier->extracted[ $match[1] ], '\'"' );

/*
			 * Check if the property is a reserved keyword. In this context (as
			 * property of an object literal/array) it shouldn't matter, but IE8
			 * freaks out with "Expected identifier".
			 */
			if ( in_array( $property, $keywords ) ) {
				return $match[0];
			}

/*
			 * See if the property is in a variable-like format (e.g.
			 * array['key-here'] can't be replaced by array.key-here since '-'
			 * is not a valid character there.
			 */
			if ( ! preg_match( '/^' . $minifier::REGEX_VARIABLE . '$/u', $property ) ) {
				return $match[0];
			}

return '.' . $property;
		};

/*
		 * Figure out if previous character is a variable name (of the array
		 * we want to use property notation on) - this is to make sure
		 * standalone ['value'] arrays aren't confused for keys-of-an-array.
		 * We can (and only have to) check the last character, because PHP's
		 * regex implementation doesn't allow unfixed-length look-behind
		 * assertions.
		 */
		preg_match( '/(\[[^\]]+\])[^\]]*$/', static::REGEX_VARIABLE, $previousChar );
		$previousChar = $previousChar[1];

/*
		 * Make sure word preceding the ['value'] is not a keyword, e.g.
		 * return['x']. Because -again- PHP's regex implementation doesn't allow
		 * unfixed-length look-behind assertions, I'm just going to do a lot of
		 * separate look-behind assertions, one for each keyword.
		 */
		$keywords = $this->getKeywordsForRegex( $keywords );
		$keywords = '(?<!' . implode( ')(?<!', $keywords ) . ')';

return preg_replace_callback( '/(?<=' . $previousChar . '|\])' . $keywords . '\[\s*(([\'"])[0-9]+\\2)\s*\]/u', $callback, $content );
	}

/**
	 * Replaces true & false by !0 and !1.
	 *
	 * @param string $content
	 *
	 * @return string
	 */
	protected function shortenBools( $content ) {
		/*
		 * 'true' or 'false' could be used as property names (which may be
		 * followed by whitespace) - we must not replace those!
		 * Since PHP doesn't allow variable-length (to account for the
		 * whitespace) lookbehind assertions, I need to capture the leading
		 * character and check if it's a `.`
		 */
		$callback = function ( $match ) {
			if ( trim( $match[1] ) === '.' ) {
				return $match[0];
			}

return $match[1] . ( $match[2] === 'true' ? '!0' : '!1' );
		};
		$content  = preg_replace_callback( '/(^|.\s*)\b(true|false)\b(?!:)/', $callback, $content );

// for(;;) is exactly the same as while(true), but shorter :)
		$content = preg_replace( '/\bwhile$!0${/', 'for(;;){', $content );

// now make sure we didn't turn any do ... while(true) into do ... for(;;)
		preg_match_all( '/\bdo\b/', $content, $dos, PREG_OFFSET_CAPTURE | PREG_SET_ORDER );

// go backward to make sure positional offsets aren't altered when $content changes
		$dos = array_reverse( $dos );
		foreach ( $dos as $do ) {
			$offsetDo = $do[0][1];

// find all `while` (now `for`) following `do`: one of those must be
			// associated with the `do` and be turned back into `while`
			preg_match_all( '/\bfor$;;$/', $content, $whiles, PREG_OFFSET_CAPTURE | PREG_SET_ORDER, $offsetDo );
			foreach ( $whiles as $while ) {
				$offsetWhile = $while[0][1];

$open  = substr_count( $content, '{', $offsetDo, $offsetWhile - $offsetDo );
				$close = substr_count( $content, '}', $offsetDo, $offsetWhile - $offsetDo );
				if ( $open === $close ) {
					// only restore `while` if amount of `{` and `}` are the same;
					// otherwise, that `for` isn't associated with this `do`
					$content = substr_replace( $content, 'while(!0)', $offsetWhile, strlen( 'for(;;)' ) );
					break;
				}
			}
		}

return $content;
	}
}

📁 File Manager Pro