ralphy: Skill for Claude Code

Anime.js for HyperFrames

HyperFrames can seek Anime.js instances through its animejs runtime adapter. The composition owns the animation objects; HyperFrames owns the clock.

Contract

• Create animations or timelines synchronously during composition initialization.
• Set autoplay: false so Anime.js does not advance on its own clock.
• Register every returned animation or timeline on window.__hfAnime.
• Use finite durations and loop counts.
• Avoid callbacks that mutate DOM based on wall-clock time, network state, or unseeded randomness.

The adapter seeks every registered instance with instance.seek(timeMs), where timeMs is HyperFrames time in milliseconds.

Basic Pattern

<script src="https://cdn.jsdelivr.net/npm/[email protected]/lib/anime.iife.min.js"></script>
<script>
  const anim = anime({
    targets: ".mark",
    translateX: 280,
    rotate: "1turn",
    opacity: [0, 1],
    duration: 1200,
    easing: "easeOutExpo",
    autoplay: false,
  });

  window.__hfAnime = window.__hfAnime || [];
  window.__hfAnime.push(anim);
</script>

Timeline Pattern

<script>
  const tl = anime.timeline({
    autoplay: false,
    easing: "easeOutCubic",
  });

  tl.add({
    targets: ".title",
    translateY: [40, 0],
    opacity: [0, 1],
    duration: 650,
  }).add(
    {
      targets: ".accent",
      scaleX: [0, 1],
      duration: 450,
    },
    250,
  );

  window.__hfAnime = window.__hfAnime || [];
  window.__hfAnime.push(tl);
</script>

Module Builds

If you use an ES module build, the adapter does not care how the instance was created. It only needs the returned object to expose seek(), pause(), and preferably play():

<script type="module">
  import { animate } from "https://cdn.jsdelivr.net/npm/animejs/+esm";

  const anim = animate(".chip", {
    x: "18rem",
    duration: 900,
    autoplay: false,
  });

  window.__hfAnime = window.__hfAnime || [];
  window.__hfAnime.push(anim);
</script>

Good Uses