51 lines
1.2 KiB
JavaScript
51 lines
1.2 KiB
JavaScript
|
/**
|
||
|
|
* @license Apache-2.0
|
||
|
|
*
|
||
|
|
* Copyright (c) 2018 The Stdlib Authors.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
// MAIN //
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns an array of an object's own enumerable property names.
|
||
|
|
*
|
||
|
|
* ## Notes
|
||
|
|
*
|
||
|
|
* - In contrast to the built-in `Object.keys()`, this function returns an empty array if provided `undefined` or `null`, rather than throwing an error.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @param {*} value - input object
|
||
|
|
* @returns {Array} a list of own enumerable property names
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* var obj = {
|
||
|
|
* 'beep': 'boop',
|
||
|
|
* 'foo': 3.14
|
||
|
|
* };
|
||
|
|
*
|
||
|
|
* var k = keys( obj );
|
||
|
|
* // e.g., returns [ 'beep', 'foo' ]
|
||
|
|
*/
|
||
|
|
function keys( value ) {
|
||
|
|
return Object.keys( Object( value ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// EXPORTS //
|
||
|
|
|
||
|
|
module.exports = keys;
|