60 lines
1.3 KiB
JavaScript
60 lines
1.3 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';
|
|
|
|
// MAIN //
|
|
|
|
/**
|
|
* Tests if an object has a specified property, either own or inherited.
|
|
*
|
|
* @param {*} value - value to test
|
|
* @param {*} property - property to test
|
|
* @returns {boolean} boolean indicating if an object has a specified property
|
|
*
|
|
* @example
|
|
* var beep = {
|
|
* 'boop': true
|
|
* };
|
|
*
|
|
* var bool = hasProp( beep, 'boop' );
|
|
* // returns true
|
|
*
|
|
* @example
|
|
* var beep = {
|
|
* 'boop': true
|
|
* };
|
|
*
|
|
* var bool = hasProp( beep, 'bap' );
|
|
* // returns false
|
|
*/
|
|
function hasProp( value, property ) {
|
|
if ( value === void 0 || value === null ) {
|
|
return false;
|
|
}
|
|
if ( typeof property === 'symbol' ) {
|
|
return property in Object( value );
|
|
}
|
|
return ( String( property ) in Object( value ) );
|
|
}
|
|
|
|
|
|
// EXPORTS //
|
|
|
|
module.exports = hasProp;
|