• then-fold

Really simple utility function for reducing a Promise returning function with an array of other functions.

#+BEGIN_SRC javascript npm install then-fold #+END_SRC

#+BEGIN_SRC javascript const thenFold = require('then-fold')

// function that returns a Promise function example (x) { return new Promise((resolve, reject) => { resolve(x) }) }

// transformation function function t1 (x) { return x + 1 }

// transformation function that returns a Promise function t2 (x) { return new Promise((resolve, reject) => { setTimeout(() => { resolve(x + 1) }, 200) })

thenFold(example(5), [ t1, t2 ]) // => 7 #+END_SRC