time-to-botec/js/node_modules/@stdlib/assert/is-nan/lib/object.js
NunoSempere b6addc7f05 feat: add the node modules
Necessary in order to clearly see the squiggle hotwiring.
2022-12-03 12:44:49 +00:00

54 lines
1.2 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';
// MODULES //
var isNumber = require( './../../is-number' ).isObject;
var isNan = require( '@stdlib/math/base/assert/is-nan' );
// MAIN //
/**
* Tests if a value is a number object having a value of `NaN`.
*
* @param {*} value - value to test
* @returns {boolean} boolean indicating if a value is a number object having a value of `NaN`
*
* @example
* var bool = isnan( NaN );
* // returns false
*
* @example
* var bool = isnan( new Number( NaN ) );
* // returns true
*/
function isnan( value ) {
return (
isNumber( value ) &&
isNan( value.valueOf() )
);
}
// EXPORTS //
module.exports = isnan;