Bacon.js requestAnimationFrame

bacon-animation-frames.coffee

Bacon.fromBinder (sink) ->
  request =
    window.requestAnimationFrame        or
    window.webkitRequestAnimationFrame  or
    window.mozRequestAnimationFrame     or
    window.oRequestAnimationFrame       or
    window.msRequestAnimationFrame      or
    (f) -> window.setTimeout(f, 1000 / 60)
  subscribed = true
  handler = ->
    if subscribed
      sink()
      request handler
  request handler
  ->
    subscribed = false