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# is-regex <sup>[![Version Badge][2]][1]</sup>
[![dependency status][5]][6] [![dev dependency status][7]][8] [![License][license-image]][license-url] [![Downloads][downloads-image]][downloads-url]
[![npm badge][11]][1]
Is this value a JS regex? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
## Example
```js var isRegex = require('is-regex'); var assert = require('assert');
assert.notOk(isRegex(undefined)); assert.notOk(isRegex(null)); assert.notOk(isRegex(false)); assert.notOk(isRegex(true)); assert.notOk(isRegex(42)); assert.notOk(isRegex('foo')); assert.notOk(isRegex(function () {})); assert.notOk(isRegex([])); assert.notOk(isRegex({}));
assert.ok(isRegex(/a/g)); assert.ok(isRegex(new RegExp('a', 'g'))); ```
## Tests
Simply clone the repo, `npm install`, and run `npm test`
[1]: https://npmjs.org/package/is-regex [2]: https://versionbadg.es/inspect-js/is-regex.svg [5]: https://david-dm.org/inspect-js/is-regex.svg [6]: https://david-dm.org/inspect-js/is-regex [7]: https://david-dm.org/inspect-js/is-regex/dev-status.svg [8]: https://david-dm.org/inspect-js/is-regex#info=devDependencies [11]: https://nodei.co/npm/is-regex.png?downloads=true&stars=true [license-image]: https://img.shields.io/npm/l/is-regex.svg [license-url]: LICENSE [downloads-image]: https://img.shields.io/npm/dm/is-regex.svg [downloads-url]: https://npm-stat.com/charts.html?package=is-regex
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