Graceful failure when graphicsmagick is not available about gm HOT 3 CLOSED

var url = require('url')
var http = require('http')
var gm = require('gm')

http.get(url.parse('http://www.google.com/images/srpr/logo3w.png'), function (resp) {
  gm(resp, 'logo3w.png').stream(function (err, stdout, stderr) {
    if (err) {
      console.error('Error processing image', err)
    } else {
      stdout.on('data', function (chunk) {
        console.log('Chunk recieved', chunk.length)
      })
      stdout.on('end', function () {
        console.log('Stream ended')
      })
    }
  })
})
.on('error', function (err) {
  console.error('Error fetching image', err)
})

$ node gm-test.js 
Chunk recieved 7078
Stream ended

$ node gm-test.js 
Error processing image, Error: graphicsmagick not available.
    at [some nice stack trace]

node.js:201
        throw e; // process.nextTick error, or 'error' event on first tick
              ^
Error: write EPIPE
    at errnoException (net.js:670:11)
    at Object.afterWrite [as oncomplete] (net.js:503:19)