Function emitKeyframes

packages/@react-spectrum/ai/src/loader/react.tsx:71–82

(name: string, stops: Stop[])

type Stop = {f: number; decl: string; ease?: readonly number[] | null};

function emitKeyframes(name: string, stops: Stop[]) {
  let body = '';
  let lastPct: string | null = null;
  for (const s of stops) {
    const p = pct(s.f);
    if (p === lastPct) continue;
    lastPct = p;
    const ease = s.ease ? `animation-timing-function:${cb(s.ease)};` : '';
    body += `${p}{${s.decl}${ease}}`;
  }
  return `@keyframes ${name}{${body}}`;
}

const ty = v => `transform:translateY(${v}px);`;
const op = v => `opacity:${v};`;