npm package: @stdlib/assert-is-regexp
Description: Test if a value is a regular expression.
Author: The Stdlib Authors
Latest version: 0.2.3

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# isRegExp

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Test if a value is a regular expression.

<section class="installation">

## Installation

```bash
npm install @stdlib/assert-is-regexp
```

</section>

<section class="usage">

## Usage

```javascript
var isRegExp = require( '@stdlib/assert-is-regexp' );
```

#### isRegExp( value )

Tests if a `value` is a regular expression.

```javascript
var bool = isRegExp( /.+/ );
// returns true

bool = isRegExp( {} );
// returns false
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- eslint-disable prefer-regex-literals -->

<!-- eslint no-undef: "error" -->

```javascript
var isRegExp = require( '@stdlib/assert-is-regexp' );

var bool = isRegExp( /.+/ );
// returns true

bool = isRegExp( new RegExp( '.+' ) );
// returns true

bool = isRegExp( '/.+/' );
// returns false

bool = isRegExp( {} );
// returns false

bool = isRegExp( null );
// returns false
```

</section>

<!-- /.examples -->

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<section class="related">

</section>

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<section class="main-repo" >

* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

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