Fantasy Promises

This library implements purely functional, monadic promises.

Promise(fork)

Promise is a constructor which takes a fork function. The fork
function takes one argument:

$3

The resolve callback gets called on a value.

$3

Creates a Promise that contains a successful value.

$3

Returns a new promise that evaluates f when the current promise
is successfully fulfilled. f must return a new promise.

$3

Returns a new promise that evaluates f on a value and passes it
through to the resolve function.

$3

Executes a promise to get a value.

$3

Returns a new promise that evaluates f over the promise to get a
value.

Fantasy Land Compatible

![
](https://github.com/pufuwozu/fantasy-land)