es6.regexp.replace.js 495 Bytes
// @@replace logic
require('./_fix-re-wks')('replace', 2, function (defined, REPLACE, $replace) {
  // 21.1.3.14 String.prototype.replace(searchValue, replaceValue)
  return [function replace(searchValue, replaceValue) {
    'use strict';
    var O = defined(this);
    var fn = searchValue == undefined ? undefined : searchValue[REPLACE];
    return fn !== undefined
      ? fn.call(searchValue, O, replaceValue)
      : $replace.call(String(O), searchValue, replaceValue);
  }, $replace];
});