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path: root/tools/eslint/node_modules/escope/node_modules/es6-map/node_modules/es5-ext/function/#/copy.js
blob: e1467f7671946ca2801d8ef6cbf138cd9db54877 (plain)
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'use strict';

var mixin         = require('../../object/mixin')
  , validFunction = require('../valid-function')

  , re = /^\s*function\s*([\0-'\)-\uffff]+)*\s*\(([\0-\(\*-\uffff]*)\)\s*\{/;

module.exports = function () {
	var match = String(validFunction(this)).match(re), fn;

	fn = new Function('fn', 'return function ' + match[1].trim() + '(' +
		match[2] + ') { return fn.apply(this, arguments); };')(this);
	try { mixin(fn, this); } catch (ignore) {}
	return fn;
};