<!-- @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. --> # isBoxedPrimitive > Test if a value is a JavaScript boxed primitive. <section class="usage"> ## Usage ```javascript var isBoxedPrimitive = require( '@stdlib/assert/is-boxed-primitive' ); ``` #### isBoxedPrimitive( value ) Tests if a `value` is a JavaScript boxed primitive. <!-- eslint-disable no-new-wrappers--> ```javascript var bool = isBoxedPrimitive( new Boolean( false ) ); // returns true bool = isBoxedPrimitive( true ); // returns false ``` </section> <!-- /.usage --> <section class="notes"> ## Notes - Boxed primitive objects can be created with one of the following: - `new Boolean()` - `new Number()` - `new String()` - `Object( Symbol() )` (ES6/ES2015) </section> <!-- /.notes --> <section class="examples"> ## Examples <!-- eslint-disable no-restricted-syntax, no-new-object, no-new-wrappers, no-empty-function, no-array-constructor --> <!-- eslint no-undef: "error" --> ```javascript var Number = require( '@stdlib/number/ctor' ); var isBoxedPrimitive = require( '@stdlib/assert/is-boxed-primitive' ); var bool = isBoxedPrimitive( new Boolean( false ) ); // returns true bool = isBoxedPrimitive( new String( 'beep' ) ); // returns true bool = isBoxedPrimitive( new Number( 3.14 ) ); // returns true bool = isBoxedPrimitive( false ); // returns false bool = isBoxedPrimitive( 0 ); // returns false bool = isBoxedPrimitive( '' ); // returns false bool = isBoxedPrimitive( null ); // returns false bool = isBoxedPrimitive( void 0 ); // returns false bool = isBoxedPrimitive( [] ); // returns false bool = isBoxedPrimitive( {} ); // returns false ``` </section> <!-- /.examples --> <section class="links"> </section> <!-- /.links -->