funcunit/site/node_modules/core-js/modules/es7.regexp.escape.js

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// https://github.com/benjamingr/RexExp.escape
var $export = require('./$.export')
  , $re     = require('./$.replacer')(/[\\^$*+?.()|[\]{}]/g, '\\$&');

$export($export.S, 'RegExp', {escape: function escape(it){ return $re(it); }});