Function waitUntil

test/artifact-live-server.test.ts:25–32

(fn: () => boolean, ms = 4000)

});

async function waitUntil(fn: () => boolean, ms = 4000): Promise<boolean> {
  const t0 = Date.now();
  while (Date.now() - t0 < ms) {
    if (fn()) return true;
    await new Promise(r => setTimeout(r, 25));
  }
  return fn();
}

/** Consume an SSE channel, counting `reload` events. Returns a stop() fn. */
async function openSse(url: string, onReload: () => void): Promise<() => void> {