is-regex ^{[![Version Badge][2]][1]}

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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
[codecov-image]: https://codecov.io/gh/inspect-js/is-regex/branch/main/graphs/badge.svg
[codecov-url]: https://app.codecov.io/gh/inspect-js/is-regex/
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[actions-url]: https://github.com/inspect-js/is-regex/actions