Function duration

core/src/utils/animation/animation.ts:420–435

(animationDuration: number)

  };

  const duration = (animationDuration: number) => {
    /**
     * CSS Animation Durations of 0ms work fine on Chrome
     * but do not run on Safari, so force it to 1ms to
     * get it to run on both platforms.
     */
    if (!supportsWebAnimations && animationDuration === 0) {
      animationDuration = 1;
    }

    _duration = animationDuration;

    update(true);

    return ani;
  };

  const iterations = (animationIterations: number) => {
    _iterations = animationIterations;