keys.js•563 B
define(['./isObject', './_setup', './_has', './_collectNonEnumProps'], function (isObject, _setup, _has, _collectNonEnumProps) {
// Retrieve the names of an object's own properties.
// Delegates to **ECMAScript 5**'s native `Object.keys`.
function keys(obj) {
if (!isObject(obj)) return [];
if (_setup.nativeKeys) return _setup.nativeKeys(obj);
var keys = [];
for (var key in obj) if (_has(obj, key)) keys.push(key);
// Ahem, IE < 9.
if (_setup.hasEnumBug) _collectNonEnumProps(obj, keys);
return keys;
}
return keys;
});