GitHub - inspect-js/is-regex: Is this value a JS regex? (original) (raw)

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