Node-canvas greyscale jpg bug example

gistfile1.txt

/**
 * Script to demonstrate node-canvas greyscale JPG bug
 *
 * example input: http://i.imgur.com/BrPWa.jpg
 * example output: http://i.imgur.com/eg2Nc.png 
 */

var Canvas = require('canvas')
  , Image = Canvas.Image;
var fs = require('fs');
  
var squid = fs.readFileSync(__dirname + '/yalta.jpg');
img = new Image;
img.src = squid;

var canvas = new Canvas(img.width, img.height)
var ctx = canvas.getContext('2d')

ctx.drawImage(img, 0, 0, img.width, img.height);

var out = fs.createWriteStream(__dirname + '/yalta-out.png')
  , stream = canvas.createPNGStream();

stream.on('data', function(chunk){
  out.write(chunk);
});