79 lines
1.9 KiB
JavaScript
79 lines
1.9 KiB
JavaScript
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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var isObject = require( '@stdlib/assert/is-object' );
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var objectKeys = require( './../../keys' );
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var defineProperty = require( './../../define-property' );
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// MAIN //
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/**
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* Defines (and/or modifies) properties.
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*
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* @param {Object} obj - object on which to define the properties
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* @param {Object} props - object with property descriptors
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* @throws {TypeError} first argument must be an object
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* @throws {TypeError} second argument must be an object
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* @returns {Object} object with added and/or modified properties
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*
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* @example
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* var obj = {};
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* defineProperties( obj, {
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* 'foo': {
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* 'value': 'bar'
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* },
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* 'baz': {
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* 'value': 13
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* }
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* });
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*
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* var val = obj.foo;
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* // returns 'bar'
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*
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* val = obj.baz;
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* // returns 13
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*/
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function defineProperties( obj, props ) {
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var keys;
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var name;
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var i;
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if ( !isObject( obj ) ) {
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throw new TypeError( 'invalid argument. First argument must be an object. Value: `' + obj + '`.' );
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}
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if ( !isObject( props ) ) {
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throw new TypeError( 'invalid argument. Second argument must be an object of property descriptors. Value: `' + props + '`.' );
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}
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keys = objectKeys( props );
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for ( i = 0; i < keys.length; i++ ) {
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name = keys[ i ];
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defineProperty( obj, name, props[ name ] );
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}
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return obj;
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}
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// EXPORTS //
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module.exports = defineProperties;
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