文件操作 - regexp-sticky-helpers.js
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文件: /usr/share/nodejs/core-js/internals/regexp-sticky-helpers.js
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var fails = require('../internals/fails'); var global = require('../internals/global'); // babel-minify and Closure Compiler transpiles RegExp('a', 'y') -> /a/y and it causes SyntaxError var $RegExp = global.RegExp; var UNSUPPORTED_Y = fails(function () { var re = $RegExp('a', 'y'); re.lastIndex = 2; return re.exec('abcd') != null; }); // UC Browser bug // https://github.com/zloirock/core-js/issues/1008 var MISSED_STICKY = UNSUPPORTED_Y || fails(function () { return !$RegExp('a', 'y').sticky; }); var BROKEN_CARET = UNSUPPORTED_Y || fails(function () { // https://bugzilla.mozilla.org/show_bug.cgi?id=773687 var re = $RegExp('^r', 'gy'); re.lastIndex = 2; return re.exec('str') != null; }); module.exports = { BROKEN_CARET: BROKEN_CARET, MISSED_STICKY: MISSED_STICKY, UNSUPPORTED_Y: UNSUPPORTED_Y };
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