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