@theguild/components/dist/components/marquee/use-tween-playback-rate.js

import { useRef } from "react";
function useTweenPlaybackRate() {
  const slowingHandle = useRef(null);
  const resumingHandle = useRef(null);
  const time = useRef(null);
  return function tweenPlaybackRate(animation, step) {
    const currentHandle = step > 0 ? resumingHandle : slowingHandle;
    const oppositeHandle = step > 0 ? slowingHandle : resumingHandle;
    if (oppositeHandle.current) {
      cancelAnimationFrame(oppositeHandle.current);
      oppositeHandle.current = time.current = null;
    }
    const now = performance.now();
    if (time.current) {
      const deltaTime = now - time.current;
      const { playbackRate } = animation;
      const newValue = Math.min(Math.max(playbackRate + step * deltaTime, 0), 1);
      if (newValue === playbackRate) return;
      animation.updatePlaybackRate(newValue);
    }
    time.current = now;
    currentHandle.current = requestAnimationFrame(() => tweenPlaybackRate(animation, step));
  };
}
export {
  useTweenPlaybackRate
};