medium_puppeteer_iframe_2.ts

async autoScroll(page: Page) {
  await page.evaluate(async () => {
    await new Promise((resolve, reject) => {
      let totalHeight = 0;
      const distance = 500;
      const timer = setInterval(() => {
        const scrollHeight = document.body.scrollHeight;
        window.scrollBy(0, distance);
        totalHeight += distance;

        if (totalHeight >= scrollHeight) {
          clearInterval(timer);
          resolve();
        }
      }, 200);
    });
  });
}