is-regex
DefinitelyTyped icon, indicating that this package has TypeScript declarations provided by the separate @types/is-regex package

1.1.4 • Public • Published

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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

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Install

npm i is-regex

Weekly Downloads

27,016,020

Version

1.1.4

License

MIT

Unpacked Size

30.1 kB

Total Files

10

Last publish

Collaborators

  • ljharb