ts-monads

• several monads, written in typescript
• very barebone, for exploration around types
• do not use for anything
• maybe, list, result, future, reader & state

install & compile

npm i
$(npm bin)/tsc

usage

import { Future, map, flatMap, fork } from './future';

const one: Future<Error, number> = (_rej, res) => {
  setTimeout(() => res(10), 1000);
});

const byThree = (val: number): Future<Error, number> =>
  (_rej, res) => {
    setTimeout(() => res(val * 3), 300);
  };

const two = map(x => x * 2, one);
const three = flatMap(byThree, two);
fork(console.error, console.log, three);

examples

state

node dist/examples/mining.js

reader

provide request context in web service layers via reader monad and iterator functions.

node dist/examples/server.js

curl "http://localhost:3000?number=9" -H "X-Cid: 123"

test

find dist/*Spec.js -exec node {} \;