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@pixelhandler/ts-maybe

v1.0.3

Published

Maybe type in TypeScript, contains Just or Nothing

Downloads

1

Readme

TS-Maybe

An option type Maybe<Just|Nothing> in TypeScript

Why Maybe ?

  • https://oliverjash.me/2017/04/10/why-use-a-maybe-type-in-javascript

What is a Maybe?

  • Maybe<Just|Nothing> provides safe handling of null|undefined or any value
  • A Maybe implements Pointed Functor, an Applicative, and Monad interfaces
  • Also known as a nullable type as Option<Some|None>

Interfaces and Maybe type inspired by:

  • Maybe-not https://github.com/danielchappell/maybe-not
  • True Myth https://true-myth.js.org

Functional programming resources:

  • https://github.com/hemanth/functional-programming-jargon
  • https://drboolean.gitbooks.io/mostly-adequate-guide/content/
  • http://adit.io/posts/2013-04-17-functors,_applicatives,_and_monads_in_pictures.html

Development

Use LTS version of Node.js

Clone the repo then, within the project root, run:

  • npm install

Testing

This boilerplate setup uses TypeScript and Tape as a test runner.

Use node scripts in package.json file

  • Check syntax npm run lint
  • Run tests npm run test
  • Watch changes and run tests npm run watch