79 lines
1.9 KiB
JavaScript
79 lines
1.9 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';
|
|
|
|
// MODULES //
|
|
|
|
var isObject = require( '@stdlib/assert/is-object' );
|
|
var objectKeys = require( './../../keys' );
|
|
var defineProperty = require( './../../define-property' );
|
|
|
|
|
|
// MAIN //
|
|
|
|
/**
|
|
* Defines (and/or modifies) properties.
|
|
*
|
|
* @param {Object} obj - object on which to define the properties
|
|
* @param {Object} props - object with property descriptors
|
|
* @throws {TypeError} first argument must be an object
|
|
* @throws {TypeError} second argument must be an object
|
|
* @returns {Object} object with added and/or modified properties
|
|
*
|
|
* @example
|
|
* var obj = {};
|
|
* defineProperties( obj, {
|
|
* 'foo': {
|
|
* 'value': 'bar'
|
|
* },
|
|
* 'baz': {
|
|
* 'value': 13
|
|
* }
|
|
* });
|
|
*
|
|
* var val = obj.foo;
|
|
* // returns 'bar'
|
|
*
|
|
* val = obj.baz;
|
|
* // returns 13
|
|
*/
|
|
function defineProperties( obj, props ) {
|
|
var keys;
|
|
var name;
|
|
var i;
|
|
|
|
if ( !isObject( obj ) ) {
|
|
throw new TypeError( 'invalid argument. First argument must be an object. Value: `' + obj + '`.' );
|
|
}
|
|
if ( !isObject( props ) ) {
|
|
throw new TypeError( 'invalid argument. Second argument must be an object of property descriptors. Value: `' + props + '`.' );
|
|
}
|
|
keys = objectKeys( props );
|
|
for ( i = 0; i < keys.length; i++ ) {
|
|
name = keys[ i ];
|
|
defineProperty( obj, name, props[ name ] );
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
|
|
// EXPORTS //
|
|
|
|
module.exports = defineProperties;
|