フォルダの下の一階層を消す

folder.coffee

###
   - desc
   A - B - C
     - D - E
     - F - G
  となってるのが
   A - C
     - E
     - G
  になる
   - usage
  coffee folder.coffee #{その下の一階層が消されるフォルダ} #{出力先}
###
fs = require "fs-extra"
path = require "path"

error = (err) ->
  if err?
    console.log "Error: #{err}"
  return

removeOneDir = (folderPath) ->
  fs.readdir(folderPath, (err, list) ->
    error()
    for folder in list
      folderPath2 = path.join(folderPath, folder)
      dest = path.join(process.argv[3], folder)
      fs.copy(folderPath2, dest, (err) ->
        error()
        console.log "Copyed: #{folderPath}"
      )
  )
  return

fs.readdir(process.argv[2], (err, list) ->
  error()
  for folder in list
    folderPath = path.join(process.argv[2], folder)
    console.log "Loading: #{folderPath}"
    if fs.statSync(folderPath).isDirectory()
      removeOneDir(folderPath)
)