Function begin

scripts/run-javascript-headless-browser.mjs:123–129

()

  return {
    async begin() {
      await workerReady;
      await send(workerSessionId, 'Profiler.enable');
      await send(workerSessionId, 'Profiler.setSamplingInterval', { interval: 150 });
      await send(workerSessionId, 'Profiler.start');
      append(`profiler:started workerSession=${workerSessionId}`);
    },
    async stop() {
      if (!workerSessionId) return null;
      const { profile } = await send(workerSessionId, 'Profiler.stop');