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 fantasy-derivations with all npm packages installed. Try it out:

var fantasyDerivations = require("fantasy-derivations")

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

fantasy-derivations v0.0.0

The fantasy-land spec allows for ADTs not to define certain functions when they are derivable from those they must define. This module is for ensuring you can always use a method if it is defined or derivable

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