如何在 node.js 中运行后台作业

Question

大家好，我已经将 res 发布到我的服务器，然后再次请求，我希望在不影响其他请求的情况下在后台运行 puppeteer 我该怎么做

    module.exports = async function main(req, res) {
     const url = req.body.url;
      const lengths = req.body.length;
      const username = req.body.username;
      const password = req.body.password;
      const browser = await puppeteer.launch({
      res.send('wait a second');
      const page = await browser.newPage();
      const pages = await browser.pages();
      if (pages.length > 1) {
        await pages[0].close();
      }
      await page.goto('https://www.facebook.com', {
        waitUntil: 'load',
      });
      await page.type('#email', username);
      await page.type('#pass', password);
      await page.keyboard.press('Enter');
      await page.waitForTimeout(3000);
      await page.goto(url, {
        waitUntil: 'load',
      });
      await autoScroll(page, (length = lengths));
      console.log('scroll done');
      await takedata(page, (length = lengths)).then(async function (result) {
       })
    };