import isObject from './isObject.js';
import { nativeKeys, hasEnumBug } from './_setup.js';
import has from './_has.js';
import collectNonEnumProps from './_collectNonEnumProps.js';import isObject from './isObject.js';
import { nativeKeys, hasEnumBug } from './_setup.js';
import has from './_has.js';
import collectNonEnumProps from './_collectNonEnumProps.js';Retrieve the names of an object’s own properties.
Delegates to ECMAScript 5‘s native Object.keys.
export default function keys(obj) {
if (!isObject(obj)) return [];
if (nativeKeys) return nativeKeys(obj);
var keys = [];
for (var key in obj) if (has(obj, key)) keys.push(key);Ahem, IE < 9.
if (hasEnumBug) collectNonEnumProps(obj, keys);
return keys;
}