builtin.js (1267B)
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 // VARIABLES // 22 23 var propertySymbols = Object.getOwnPropertySymbols; 24 25 26 // MAIN // 27 28 /** 29 * Returns an array of an object's own symbol properties. 30 * 31 * ## Notes 32 * 33 * - In contrast to the built-in `Object.getOwnPropertySymbols()`, this function returns an empty array if provided `undefined` or `null`, rather than throwing an error. 34 * 35 * @private 36 * @param {*} value - input object 37 * @returns {Array} a list of own symbol properties 38 * 39 * @example 40 * var symbols = getOwnPropertySymbols( {} ); 41 */ 42 function getOwnPropertySymbols( value ) { 43 return propertySymbols( Object( value ) ); 44 } 45 46 47 // EXPORTS // 48 49 module.exports = getOwnPropertySymbols;