| var getNative = require('../internal/getNative'), |
| isArrayLike = require('../internal/isArrayLike'), |
| isObject = require('../lang/isObject'), |
| shimKeys = require('../internal/shimKeys'); |
| |
| /* Native method references for those with the same name as other `lodash` methods. */ |
| var nativeKeys = getNative(Object, 'keys'); |
| |
| /** |
| * Creates an array of the own enumerable property names of `object`. |
| * |
| * **Note:** Non-object values are coerced to objects. See the |
| * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys) |
| * for more details. |
| * |
| * @static |
| * @memberOf _ |
| * @category Object |
| * @param {Object} object The object to query. |
| * @returns {Array} Returns the array of property names. |
| * @example |
| * |
| * function Foo() { |
| * this.a = 1; |
| * this.b = 2; |
| * } |
| * |
| * Foo.prototype.c = 3; |
| * |
| * _.keys(new Foo); |
| * // => ['a', 'b'] (iteration order is not guaranteed) |
| * |
| * _.keys('hi'); |
| * // => ['0', '1'] |
| */ |
| var keys = !nativeKeys ? shimKeys : function(object) { |
| var Ctor = object == null ? undefined : object.constructor; |
| if ((typeof Ctor == 'function' && Ctor.prototype === object) || |
| (typeof object != 'function' && isArrayLike(object))) { |
| return shimKeys(object); |
| } |
| return isObject(object) ? nativeKeys(object) : []; |
| }; |
| |
| module.exports = keys; |