https://github.com/lekterable/is-regexy

Easily check user input for regex patterns.
https://github.com/lekterable/is-regexy

expression is regex regex-patterns regexp regexy regular test

Last synced: 2 months ago
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Easily check user input for regex patterns.

• Host: GitHub
• URL: https://github.com/lekterable/is-regexy
• Owner: lekterable
• License: mit
• Created: 2020-04-18T00:37:36.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2023-03-07T01:25:01.000Z (about 3 years ago)
• Last Synced: 2025-09-09T15:34:29.405Z (9 months ago)
• Topics: expression, is, regex, regex-patterns, regexp, regexy, regular, test
• Language: TypeScript
• Homepage:
• Size: 393 KB
• Stars: 4
• Watchers: 1
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
# is-regexy [![npm](https://img.shields.io/npm/v/is-regexy)](https://www.npmjs.com/package/is-regexy) [![build](https://img.shields.io/travis/lekterable/is-regexy)](https://travis-ci.com/github/lekterable/is-regexy) [![codecov](https://codecov.io/gh/lekterable/is-regexy/branch/master/graph/badge.svg)](https://codecov.io/gh/lekterable/is-regexy) [![management: perfekt👌](https://img.shields.io/badge/management-perfekt👌-red.svg?style=flat-square)](https://github.com/lekterable/perfekt)

A very simple library for checking if a given value (Regex object OR string) is a valid regular expression.

Useful when you want to allow users to pass regex patterns as input.

## Example

```js

const isRegexy = require('is-regexy') // CommonJS

// OR

import isRegexy from 'is-regexy' // ES modules

isRegexy('foo') // false

isRegexy(/foo/) // true

isRegexy(new RegExp('foo')) // true

isRegexy('/foo/') // true

isRegexy('/foo/ig') // true

isRegexy('/(epic|feat|fix|chore)/DEV-\\d{4}/i') //true

```

## License

[MIT](LICENSE)