Create a regular expression from a regular expression string.
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> Create a [regular expression][regexp] from a [regular expression][regexp] string.
``bash`
npm install @stdlib/utils-regexp-from-string
`javascript`
var reFromString = require( '@stdlib/utils-regexp-from-string' );
#### reFromString( str )
Parses a [regular expression][regexp] string and returns a new [regular expression][regexp].
`javascript`
var re = reFromString( '/beep/' );
// returns /beep/
- Provided strings must be properly escaped.
`javascript
// Unescaped:
var re = reFromString( '/\w+/' );
// returns /w+/
// Escaped:
re = reFromString( '/\\w+/' );
// returns /\w+/
`
`javascript
var reFromString = require( '@stdlib/utils-regexp-from-string' );
var re = reFromString( '/beep/' );
// returns /beep/
re = reFromString( '/[A-Z]*/' );
// returns /[A-Z]*/
re = reFromString( '/\\\\\\\//ig' );
// returns /\\\//gi
re = reFromString( '/[A-Z]{0,}/' );
// returns /[A-Z]{0,}/
re = reFromString( '/^boop$/' );
// returns /^boop$/
re = reFromString( '/(?:.*)/' );
// returns /(?:.*)/
re = reFromString( '/(?:beep|boop)/' );
// returns /(?:beep|boop)/
re = reFromString( '/\\w+/' );
// returns /\w+/
`
*
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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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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
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[regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions