main.js (1413B)
1 /** 2 * @license Apache-2.0 3 * 4 * Copyright (c) 2018 The Stdlib Authors. 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 'use strict'; 20 21 // MODULES // 22 23 var hasArgumentsBug = require( './has_arguments_bug.js' ); 24 var HAS_BUILTIN = require( './has_builtin.js' ); 25 var builtin = require( './builtin.js' ); 26 var wrapper = require( './builtin_wrapper.js' ); 27 var polyfill = require( './polyfill.js' ); 28 29 30 // MAIN // 31 32 /** 33 * Returns an array of an object's own enumerable property names. 34 * 35 * @name keys 36 * @type {Function} 37 * @param {*} value - input object 38 * @returns {Array} a list of own enumerable property names 39 * 40 * @example 41 * var obj = { 42 * 'beep': 'boop', 43 * 'foo': 3.14 44 * }; 45 * 46 * var k = keys( obj ); 47 * // e.g., returns [ 'beep', 'foo' ] 48 */ 49 var keys; 50 if ( HAS_BUILTIN ) { 51 if ( hasArgumentsBug() ) { 52 keys = wrapper; 53 } else { 54 keys = builtin; 55 } 56 } else { 57 keys = polyfill; 58 } 59 60 61 // EXPORTS // 62 63 module.exports = keys;