Important: This documentation covers Yarn 1 (Classic).
For Yarn 2+ docs and migration guide, see yarnpkg.com.

Package detail

is-regexp

sindresorhus41.3mMIT3.1.0TypeScript support: included

Check if a value is a regular expression

regex, regexp, regular, expression, regular expression, check, type, is

readme

is-regexp

Check if a value is a regular expression

Install

$ npm install is-regexp

Usage

import isRegexp from 'is-regexp';

isRegexp('unicorn');
//=> false

isRegexp(/unicorn/);
//=> true

isRegexp(new RegExp('unicorn'));
//=> true

FAQ

Why not just use instanceof instead of this package?

  • is - Type check values
Get professional support for this package with a Tidelift subscription
Tidelift helps make open source sustainable for maintainers while giving companies
assurances about security, maintenance, and licensing for their dependencies.