npm package: @stdlib/regexp-reviver
Description: Revive a JSON-serialized regular expression.
Author: The Stdlib Authors
Latest version: 0.2.3

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# reviveRegExp

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

> Revive a JSON-serialized [regular expression][mdn-regexp].

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<section class="intro">

</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/regexp-reviver
```

</section>

<section class="usage">

## Usage

```javascript
var reviveRegExp = require( '@stdlib/regexp-reviver' );
```

#### reviveRegExp( key, value )

Revives a JSON-serialized [regular expression][mdn-regexp].

```javascript
var parseJSON = require( '@stdlib/utils-parse-json' );

var str = '{"type":"RegExp","pattern":"ab+c","flags":""}';

var re = parseJSON( str, reviveRegExp );
// returns <RegExp>
```

For details on the JSON serialization format, see [`@stdlib/regexp-to-json`][@stdlib/regexp/to-json].

</section>

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<section class="examples">

## Examples

```javascript
var parseJSON = require( '@stdlib/utils-parse-json' );
var regexp2json = require( '@stdlib/regexp-to-json' );
var reviveRegExp = require( '@stdlib/regexp-reviver' );

var re1 = /ab+c/;
var json = regexp2json( re1 );

var str = JSON.stringify( json );
// returns '{"type":"RegExp","pattern":"ab+c","flags":""}'

var re2 = parseJSON( str, reviveRegExp );
// returns <RegExp>

var bool = ( re1.toString() === re2.toString() );
// returns true
```

</section>

<!-- /.examples -->

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<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/regexp-to-json`][@stdlib/regexp/to-json]</span><span class="delimiter">: </span><span class="description">return a JSON representation of a regular expression.</span>

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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].

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[npm-image]: http://img.shields.io/npm/v/@stdlib/regexp-reviver.svg
[npm-url]: https://npmjs.org/package/@stdlib/regexp-reviver

[test-image]: https://github.com/stdlib-js/regexp-reviver/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/regexp-reviver/actions/workflows/test.yml?query=branch:v0.2.3

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/regexp-reviver/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/regexp-reviver?branch=main

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[stdlib]: https://github.com/stdlib-js/stdlib

[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors

[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/regexp-reviver/tree/deno
[deno-readme]: https://github.com/stdlib-js/regexp-reviver/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/regexp-reviver/tree/umd
[umd-readme]: https://github.com/stdlib-js/regexp-reviver/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/regexp-reviver/tree/esm
[esm-readme]: https://github.com/stdlib-js/regexp-reviver/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/regexp-reviver/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/regexp-reviver/main/LICENSE

[mdn-regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

[@stdlib/regexp/to-json]: https://www.npmjs.com/package/@stdlib/regexp-to-json

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