DadgadCafe

'use strict'
module.exports = diff

const MATCH = 0
const REMOVE = 1
const INSERT = 2
const REPLACE = 3

function diff (fromArr, toArr, diffKey) {
  const len1 = fromArr.length

DadgadCafe

(define call/cc call-with-current-continuation)

;;;;;;;;;;;;;;
(call/cc (lambda (cont) 2)) ; 2, cont do nothing

(call/cc (lambda (cont) (cont 2))) ; 2, cont do nothing

(* 3 (call/cc (lambda (cont) 
                (+ 1 2)))) ; 9, cont is not used 

DadgadCafe

'use strict'

/**
 * note: substitute costs 2
 *
 * if either string is empty => length of the other
 * if the last chars of both match =>
 *   recursively call edit without adding distance
 * if not =>
 *   Math.min of three ways

DadgadCafe

'use strict'
function promisify (fakeAjax){
  let content = null
  let func = null

  return function (url) {
    fakeAjax(url, (err, data) => {
      if (err) {
        throw Error('unhandled error')
      }