is-regex Version Badge

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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