How to download an image file? (Example) #Node.js

download.coffee

request = require 'request'
http = require 'http'
fs = require 'fs'
unirest = require 'unirest'
needle = require 'needle'
bhttp = require 'bhttp'

url = 'http://raw.githubusercontent.com/alrra/browser-logos/master/main-desktop.png'

# request
request.get {url: url, encoding: 'binary'}, (err, res) ->
  if not err and res.statusCode is 200
    fs.writeFile('file1.png', res.body, encoding: 'binary')

# http
http.get url, (res) ->
  if res.statusCode is 200
    res.pipe(fs.createWriteStream('file2.png'))

# unireq
unireq = unirest.get(url)
unireq.options['encoding'] = 'binary'
unireq.end (res) ->
  if res.statusCode is 200
    fs.writeFile('file3.png', res.body, encoding: 'binary')

# needle
needle.get url, (err, res) ->
  if not err and res.statusCode is 200
    fs.writeFile('file4.png', res.raw)

# bhttp
bhttp.get(url, stream: true).then (response) ->
  if response.statusCode is 200
    response.pipe fs.createWriteStream('file5.png')

npm.bat

npm install request unirest needle bhttp

it didn't work.. it says unexpected token {
request.get {url: url, encoding: 'binary'}, (err, res) -> <-- this line