Gruntfile.coffee

module.exports = (grunt) ->
  fs = require('fs')
  path = require('path')
  spawn = require('child_process').spawn
  _ = grunt.util._

  grunt.initConfig
    fswatch:
      watchDir: "target"

  firstTimeExecution = true
  grunt.registerTask 'fswatch', 'fs.watch glue', ->
    rerun = =>
      grunt.task.clearQueue()
      grunt.task.run(@name)

    defaultOptions =
      watchDir: "."
      callback: (event, filename) ->
    options = _.extend defaultOptions, grunt.config.get(@name)

    if firstTimeExecution
      fs.watch options.watchDir, (event, filename) ->
        filepath = path.join(options.watchDir, filename)
        options.callback(event, filepath)

    # forever running hack
    done = @async()
    sleep = spawn('sleep', [600])
    sleep.on 'close', =>
      firstTimeExecution = false
      done()
      rerun()