AnimateCssAnimations {.pure.} = enum
  bounce, flash, pulse, rubberBand, shakeX, shakeY, headShake, swing, tada,
  wobble, jello, heartBeat, backInDown, backInLeft, backInRight, backInUp,
  backOutDown, backOutLeft, backOutRight, backOutUp, bounceIn, bounceInDown,
  bounceInLeft, bounceInRight, bounceInUp, bounceOut, bounceOutDown,
  bounceOutLeft, bounceOutRight, bounceOutUp, fadeIn, fadeInDown, fadeInDownBig,
  fadeInLeft, fadeInLeftBig, fadeInRight, fadeInRightBig, fadeInUp, fadeInUpBig,
  fadeInTopLeft, fadeInTopRight, fadeInBottomLeft, fadeInBottomRight, fadeOut,
  fadeOutDown, fadeOutDownBig, fadeOutLeft, fadeOutLeftBig, fadeOutRight,
  fadeOutRightBig, fadeOutUp, fadeOutUpBig, fadeOutTopLeft, fadeOutTopRight,
  fadeOutBottomRight, fadeOutBottomLeft, flip, flipInX, flipInY, flipOutX,
  flipOutY, lightSpeedInRight, lightSpeedInLeft, lightSpeedOutRight,
  lightSpeedOutLeft, rotateIn, rotateInDownLeft, rotateInDownRight,
  rotateInUpLeft, rotateInUpRight, rotateOut, rotateOutDownLeft,
  rotateOutDownRight, rotateOutUpLeft, rotateOutUpRight, hinge, jackInTheBox,
  rollIn, rollOut, zoomIn, zoomInDown, zoomInLeft, zoomInRight, zoomInUp,
  zoomOut, zoomOutDown, zoomOutLeft, zoomOutRight, zoomOutUp, slideInDown,
  slideInLeft, slideInRight, slideInUp, slideOutDown, slideOutLeft,
  slideOutRight, slideOutUp

AnimateCssUtility {.pure.} = enum
  delay2s = "delay-2s", delay3s = "delay-3s", delay4s = "delay-4s",
  delay5s = "delay-5s", slow, slower, fast, faster, repeat1 = "repeat-1",
  repeat2 = "repeat-2", repeat3 = "repeat-3", infinite

func animatecss(classes: varargs[string, parseClass]): string {....raises: [],
    tags: [].}

func parseClass(x: AnimateCssAnimations or AnimateCssUtility): string