56 lines
1.3 KiB
JavaScript
56 lines
1.3 KiB
JavaScript
/**
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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 hasOwnProp = require( './../../has-own-property' );
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// MAIN //
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/**
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* Returns a boolean indicating whether an object has a nested property.
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*
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* @private
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* @param {*} v - value to test
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* @param {Array} props - list of properties defining a key path
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* @returns {boolean} boolean indicating whether an object has a nested property
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*/
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function deepHasOwnProp( v, props ) {
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var len = props.length;
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var i;
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if ( len === 0 ) {
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return false;
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}
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for ( i = 0; i < len; i++ ) {
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if ( hasOwnProp( v, props[ i ] ) ) {
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v = v[ props[ i ] ];
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} else {
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return false;
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}
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}
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return true;
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}
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// EXPORTS //
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module.exports = deepHasOwnProp;
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