entries.js (1592B)
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 objectKeys = require( './../../keys' ); 24 var isObjectLike = require( '@stdlib/assert/is-object-like' ); 25 26 27 // MAIN // 28 29 /** 30 * Returns an array of an object's own enumerable property `[key, value]` pairs. 31 * 32 * @param {ObjectLike} obj - input object 33 * @throws {TypeError} must provide an object-like value 34 * @returns {Array} array containing key-value pairs 35 * 36 * @example 37 * var obj = { 38 * 'beep': 'boop', 39 * 'foo': 'bar' 40 * }; 41 * 42 * var entries = objectEntries( obj ); 43 * // e.g., returns [ ['beep', 'boop'], ['foo', 'bar'] ] 44 */ 45 function objectEntries( obj ) { 46 var keys; 47 var out; 48 var len; 49 var i; 50 if ( !isObjectLike( obj ) ) { 51 throw new TypeError( 'invalid argument. Must provide an object-like value. Value: `'+obj+'`.' ); 52 } 53 keys = objectKeys( obj ); 54 len = keys.length; 55 out = new Array( len ); 56 for ( i = 0; i < len; i++ ) { 57 out[ i ] = [ keys[i], obj[ keys[i] ] ]; 58 } 59 return out; 60 } 61 62 63 // EXPORTS // 64 65 module.exports = objectEntries;