Sign Up for Free

RunKit +

Try any Node.js package right in your browser

This is a playground to test code. It runs a full Node.js environment and already has all of npm’s 1,000,000+ packages pre-installed, including optjs with all npm packages installed. Try it out:

var optjs = require("optjs")

This service is provided by RunKit and is not affiliated with npm, Inc or the package authors.

optjs v3.2.2

Probably the sole command line option parser you'll ever need to...

RunKit is a free, in-browser JavaScript dev environment for prototyping Node.js code, with every npm package installed. Sign up to share your code.
Sign Up for Free