Node.js 解决所有问题后如何调用函数？

我用木偶演员从网站上提取数据。我的问题是在获取所有内容后关闭浏览器

请帮助我：）这是一个用于GraphQL的解析器函数

const Somesite = async ({ ticker }) => {
    const browser = await puppeteer.launch({ headless: false});
    const page = await browser.newPage();
    await page.goto('https://Somesite.com/quote.ashx?t=' + ticker);
    let result = {
        ticker,
        market_cap: async () => {
            return await fetch_data_with_xpath(page, { ticker, xpath: "/html/body/table[3]/tbody/tr[1]/td/table/tbody/tr[7]/td/table/tbody/tr[2]/td[2]/b" })
        },
        float: async () => {
            return await fetch_data_with_xpath(page, { ticker, xpath: "/html/body/table[3]/tbody/tr[1]/td/table/tbody/tr[7]/td/table/tbody/tr[2]/td[10]/b" })
        },
        insider_own: async () => {
            return await fetch_data_with_xpath(page, { ticker, xpath: "/html/body/table[3]/tbody/tr[1]/td/table/tbody/tr[7]/td/table/tbody/tr[1]/td[8]/b" })
        },
        short_float: async () => {
            return await fetch_data_with_xpath(page, { ticker, xpath: "/html/body/table[3]/tbody/tr[1]/td/table/tbody/tr[7]/td/table/tbody/tr[3]/td[10]/b" })
        },
        date: async () => {
            return moment().format("MM/DD/YYYY");
        },
        cash_per_share: async () => {
            return await fetch_data_with_xpath(page, { ticker, xpath: "/html/body/table[3]/tbody/tr[1]/td/table/tbody/tr[7]/td/table/tbody/tr[6]/td[2]/b" })
        },
        dept_equity: async () => {
            return await fetch_data_with_xpath(page, { ticker, xpath: "/html/body/table[3]/tbody/tr[1]/td/table/tbody/tr[7]/td/table/tbody/tr[10]/td[4]/b/span" })
        },
        browser : async () => {
            return browser.close()
        }
    };


    return result;
};

const fetch_data_with_xpath = async (page, { ticker, xpath }) => {
    const element = await page.$x(xpath);
    let text = "";
    if (!!element) {
        text = await page.evaluate(element => element.textContent, element[0]);
    }
    return text;
}

我尝试为每个数据元素打开单独的浏览器，但效率不高，而且很快就达到了极限

我不能让浏览器保持打开状态，这不是一个选项。

---

当我触发

浏览器时。在定义
结果后关闭
，
浏览器过早关闭，且未获取任何数据。
首先从对象内部移除
浏览器。关闭（）
，因为对象中的属性是无序的，所以它无法工作

假设对象上的所有元素都是函数，我们可以利用
for..of
和
async..wait

async function getResult() {
 // hold all of our related functions
 let resultFunctions = {
  ticker,
  market_cap: async () => {
   return fetch_data_with_xpath(page, {
    ticker,
    xpath: "/html/body/table[3]/tbody/tr[1]/td/table/tbody/tr[7]/td/table/tbody/tr[2]/td[2]/b"
   })
  }
 };

 let result = {}
 // run all functions inside the object
 for (let [key, fn] of Object.entries(resultFunctions)) {
  if (typeof fn === 'function') {
   result[key] = await fn()
  }

  // if it's not a function, 
  // then it's "Probably" a string according to our schema above
  if (typeof fn === 'string') result[key] = fn;
 }
 return result;
}

const result = await getResult()
await browser.close()