await.js

let listFiles = (folder: string) => listContents(folder, (f) => fs.statSync(f).isFile())

let listFolders = (folder: string) => listContents(folder, (f) => fs.statSync(f).isDirectory())

let listContents = (folder: string, filterFunc) => {
  return new Promise(function (resolve, reject) {
    fs.readdir(folder, function (error, result) {
      if (error) {
        reject(error)
      } else {
        resolve(result.map(file => path.join(folder, file)).filter(filterFunc))
      }
    })
  })
}


const flatten = arr => arr.reduce((a, b) => a.concat(Array.isArray(b) ? flatten(b) : b), [])

// a list of folders
let folders = await listFiles(ASSET_FOLDER)
// a list of lists of files
let files = await Promise.all(folders.map(async (name) => await listFiles(name)))
// a list of files
let flatList = flatten(files) // adding this line causes errors on the first two
log(flatList)


// make map equivilant of this
let mappedList = []
for (let file in flatList) {
  let shouldConvert = await checkFile(file)
  let newFile = shouldConvert ? await convertFile(file) : file
  webList.push(newFile)
}



// not working, returns a promise
let clothes  = await temperatures.map(async (temp) => {
  let isCold = await check(temp)
  if (isCold)
    return await wearClothes("cold")
  return dontChange()
})