is-regex
Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag
Last updated 3 years ago
by ljharb
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MIT
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package.json
$ npm install is-regex
SYNC missed versions from
official npm registry.
is-regex 
Is this value a JS regex? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Example
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
Current Tags
- 1.1.4 ... latest (3 years ago)
12 Versions
Maintainers (1)
ljharb
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Dependencies (2)
- call-bind ^1.0.2
- has-tostringtag ^1.0.0
Dev Dependencies (10)
- @ljharb/eslint-config ^17.6.0
- aud ^1.1.5
- auto-changelog ^2.3.0
- core-js ^3.16.0
- eclint ^2.8.1
- eslint ^7.32.0
- foreach ^2.0.5
- nyc ^10.3.2
- safe-publish-latest ^1.1.4
- tape ^5.3.0