time-to-botec/squiggle/node_modules/@stdlib/assert/is-array-like-object/lib/main.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 isInteger = require( '@stdlib/math/base/assert/is-integer' );
var MAX_LENGTH = require( '@stdlib/constants/array/max-array-length' );
// MAIN //
/**
* Tests if a value is an array-like object.
*
* @param {*} value - value to test
* @returns {boolean} boolean indicating if a value is an array-like object
*
* @example
* var bool = isArrayLikeObject( [] );
* // returns true
*
* @example
* var bool = isArrayLikeObject( { 'length':10 } );
* // returns true
*
* @example
* var bool = isArrayLikeObject( 'beep' );
* // returns false
*/
function isArrayLikeObject( value ) {
return (
typeof value === 'object' &&
value !== null &&
typeof value.length === 'number' &&
isInteger( value.length ) &&
value.length >= 0 &&
value.length <= MAX_LENGTH
);
}
// EXPORTS //
module.exports = isArrayLikeObject;