Return a regular expression to parse a regular expression string.
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> [Regular expression][regexp] to parse a [regular expression][regexp] string.
``bash`
npm install @stdlib/regexp-regexp
`javascript`
var reRegExp = require( '@stdlib/regexp-regexp' );
#### reRegExp()
Returns a [regular expression][regexp] to parse a [regular expression][regexp] string.
`javascript
var RE_REGEXP = reRegExp();
var bool = RE_REGEXP.test( '/^beep$/' );
// returns true
bool = RE_REGEXP.test( '' );
// returns false
var parts = RE_REGEXP.exec( '/^.*$/ig' );
// returns [ '/^.$/ig', '^.$', 'ig', 'index': 0, 'input': '/^.*$/ig' ]
`
[Regular expression][regexp] strings should be escaped.
`javascript
var RE_REGEXP = reRegExp();
var bool = RE_REGEXP.test( '/^\/([^\/]+)\/(.*)$/' );
// returns false
bool = RE_REGEXP.test( '/^\\/([^\\/]+)\\/(.*)$/' );
// returns true
`
#### reRegExp.REGEXP
[Regular expression][regexp] to parse a [regular expression][regexp] string.
`javascript`
var bool = reRegExp.REGEXP.test( '/^beep$/' );
// returns true
`javascript
var reRegExp = require( '@stdlib/regexp-regexp' );
var RE_REGEXP = reRegExp();
var bool = RE_REGEXP.test( '/beep/' );
// returns true
bool = RE_REGEXP.test( '/^.*$/ig' );
// returns true
bool = RE_REGEXP.test( '/^\\/([^\\/]+)\\/(.*)$/' );
// returns true
bool = RE_REGEXP.test( '/^\/([^\/]+)\/(.*)$/' );
// returns false
bool = RE_REGEXP.test( '/boop' );
// returns false
bool = RE_REGEXP.test( '' );
// returns false
`
*
- [@stdlib/utils-regexp-from-string][@stdlib/utils/regexp-from-string]: create a regular expression from a regular expression string.
*
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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].
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---
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Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[deno-url]: https://github.com/stdlib-js/regexp-regexp/tree/deno
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[regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
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