time-to-botec/squiggle/node_modules/@stdlib/utils/deep-get/lib/dget.js

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/**
* @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 isObjectLike = require( '@stdlib/assert/is-object-like' );
var hasOwnProp = require( '@stdlib/assert/has-own-property' );
// MAIN //
/**
* Returns a nested property value.
*
* @private
* @param {ObjectLike} obj - input object
* @param {Array} props - list of properties defining a key path
* @returns {*} nested property value
*/
function deepGet( obj, props ) {
var len = props.length;
var v = obj;
var i;
for ( i = 0; i < len; i++ ) {
if (
isObjectLike( v ) &&
hasOwnProp( v, props[ i ] )
) {
v = v[ props[ i ] ];
} else {
return;
}
}
return v;
}
// EXPORTS //
module.exports = deepGet;