can't stop animation from callback

[VitorLuizC]

Animations can't be stoped from its callbacks.

const animation = animate(() => {
  animation.stop(); // it does not work.
});

animation.start();

When stop is called from callback it cancels AnimationFrame and clean handle, but after that requestAnimationFrame is immediatly assigned to handle and the animation keep running.

[VitorLuizC]

Maybe the same issue causes N animations at same time if start is called again.