Broccoli runner

runner.js.coffee

fs = require 'fs'
util = require 'util'
{spawn} = require 'child_process'

steps = []

# NOTE: can't use console to output as it's buffered.
log = (args...) ->
  out = process.stdout.write args.join(' ') + '\n'

log "Starting... Ctrl-C to quit."
run = (cmd, callback) ->
  process.stdout.write "Running: ", cmd
  cmd = cmd.split()
  proc = spawn cmd.shift(), cmd, stdio: 'inherit'
  proc.on 'close', (code) ->
    unless code == 0
      log "error running #{cmd}"
      process.exit 1
    callback()

# Kick off the server
args = process.argv.slice(1)
args[0] = "build.js.coffee"
child = null
restart = =>
  if child
    log "Build code changed. Killing child."
    child.kill()
    child.on 'exit', ->
      restart()
  else
    log "Starting builder"
    child = spawn 'coffee', args, stdio: 'inherit'
    child.on 'exit', ->
      child = null

restart()

# Restart on changes
fs.watchFile 'package.json', ->
  run 'npm install', restart
fs.watchFile 'bower.json', ->
  run 'bower install', restart
fs.watchFile 'Brocfile.js.coffee', ->
  restart()