zipStream in Node.js

zipStream.coffee

fs = require "fs"
es = require('event-stream')
zipstream = require("zipstream")
app = require("express")()

files = ["rt_p2p_server.coffee", "rt_p2p_server.screen"]

addFile = (files) ->
  unless files.length
    zip.finalize ->
      console.log "Done"
    return

  file = files.pop()
  console.log "Zipping #{file}"
  fileStream = fs.createReadStream(file)
  zip.addFile fileStream, name: file, ->
     console.log "End adding #{file}"
     addFile(files)

app.get "/", (req, res) ->
  zip = zipstream.createZip({ level: 1 })

  zip.pipe es.map (raw_data, cb) ->
    console.log "Receiving raw_data"
    cb()

  zip.pipe res
  addFile files

app.listen 3010