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var isObject = require('./isObject.js'); var _setup = require('./_setup.js'); var _has = require('./_has.js'); var _collectNonEnumProps = require('./_collectNonEnumProps.js'); // 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; } module.exports = keys;