abstractmachines

class Pwomise {
  constructor (fn) {
    fn(this._resolve.bind(this), this._reject.bind(this))
    this._thens = []
    this._catches = []
  }

  _resolve (value) {
    while (this._thens.length > 0) {
      this._thens.pop()(value)

abstractmachines

/** Implementing transformations (like map and filter) with reducers. **/

// https://www.webpackbin.com/bins/-Kvmn0gWkIMmtnFnkcu_
// https://medium.com/@roman01la/understanding-transducers-in-javascript-3500d3bd9624

// take all evens, multiply by 2, log that.
const arr = ['1', '2', '3', '4', '5', '6']

console.log('Chaining map and filter.')