Function main

benchmarks/navigation-memory.ts:220–334

()

}

async function main() {
  const options = parseArgs(process.argv.slice(2));
  const samples: MemorySample[] = [];
  const startedAt = performance.now();
  const bootstrap = createLargeSplitStreamBootstrap({
    fileCount: options.fileCount,
    linesPerFile: options.linesPerFile,
  });
  console.log(
    `navigation memory fixture files=${options.fileCount} lines=${options.linesPerFile} ` +
      `navigations=${options.navigations} mode=${options.mode} gc=${options.gc ? "on" : "off"}`,
  );
  samples.push(sampleMemory("after_bootstrap", 0, options));

  const setup = await testRender(React.createElement(AppHost, { bootstrap }), {
    width: options.width,
    height: options.height,
  });

  try {
    await renderOnce(setup);
    samples.push(sampleMemory("after_first_frame", 0, options));
    console.log(
      `navigation=${(0).toString().padStart(4)} heap=${formatBytes(samples.at(-1)!.heapUsedBytes)} ` +
        `rss=${formatBytes(samples.at(-1)!.rssBytes)}`,
    );

    let position = 0;
    let direction = 1;
    for (let navigation = 1; navigation <= options.navigations; navigation += 1) {
      const next = nextNavigationKey(position, direction, options);
      position = next.position;
      direction = next.direction;
      await pressNavigationKey(setup, next.key);

      if (navigation % options.sampleEvery === 0 || navigation === options.navigations) {
        const nextSample = sampleMemory("navigation", navigation, options);
        samples.push(nextSample);
        console.log(
          `navigation=${navigation.toString().padStart(4)} heap=${formatBytes(nextSample.heapUsedBytes)} ` +
            `rss=${formatBytes(nextSample.rssBytes)} external=${formatBytes(nextSample.externalBytes)}`,
        );
      }
    }
  } finally {
    await act(async () => {
      setup.renderer.destroy();
      await Bun.sleep(0);
    });
    samples.push(sampleMemory("after_destroy", options.navigations, options));
  }

  const navigationSamples = samples.filter(
    (entry) => entry.label === "navigation" && entry.navigation >= options.warmupNavigations,
  );
  const first =
    navigationSamples[0] ?? samples.find((entry) => entry.label === "after_first_frame")!;
  const last = navigationSamples.at(-1) ?? samples.at(-1)!;