export default function updateInit(art) {
  if (art.constructor.USE_RAF) {
    let timer = null;

    (function update() {
      if (art.playing) {
        art.emit('raf')
      }

      if (!art.isDestroy) {
        timer = requestAnimationFrame(update)
      }
    })()

    art.on('destroy', () => {
      cancelAnimationFrame(timer)
    })
  }
}