了解异步函数 --> 第二个函数即将运行

Question

我调用API来获取第二个函数所需的令牌。但这一次很快就会结束，所以没有数据。(我得到一个错误，json有一个意外的结束(。之后我再打4个电话。我在谷歌应用程序脚本中做了这个，但漏洞脚本大约需要17分钟。所以我想在NodeJS中创建它并部署在firebase上，然后为应用程序脚本创建一个端点来获取已经准备好的数据。

FIRST功能

const express = require('express');
const app = express();
const fetch = require('node-fetch'); 
const resid = require('./calls.js');

/*
Here we start with the request to get a new token. And pass this on in the request's later on.
*/
async function getToken() {
const config = {
method: 'post',
headers: {}
};
const url = 'https://theapirurl.com';
const response = await fetch(url, config);
const json = await response.json();
const token = json['access_token'];
await resid.getReservationIds(token);
}
getToken()

第二个函数(调用.js时(

const fetch = require('node-fetch'); 
async function getReservationIds(token) {
const url = "https://theapiurl.com";
const config = {

method: "get",
muteHttpExceptions: true,
headers: {
"Authorization": "bearer" + token
}
};
const respone = await fetch(url, config);
const json = await respone.json();
//console.log(json);
}
module.exports = {
resid: getReservationIds()
}

我做错了什么？

编辑

现在我得到这个错误：

(node:43371) UnhandledPromiseRejectionWarning: FetchError: invalid json response body at https://apiurlfromcallsjs.com reason: Unexpected end of JSON input
at /Users/remco/functions/node_modules/node-fetch/lib/index.js:272:32
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async getReservationIds (/Users/remco/functions/calls.js:20:18)
(node:43371) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)
(node:43371) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
(node:43371) UnhandledPromiseRejectionWarning: TypeError: getReservationIds is not a function
at getToken (/Users/remco/functions/index.js:23:11)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
(node:43371) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 3)

Answer 1

您正在立即调用第二个函数，而不是等待第一个函数完成：

module.exports = {
resid: getReservationIds()
}

所以当你运行时

const resid = require('./calls.js');

此时，第二个函数已经在运行中(resid.getReservationIds是Promise，而不是函数(。

只导出函数：

module.exports = getReservationIds;

然后导入并称之为：

const getReservationIds = require('./calls.js');
// ...
await getReservationIds(token);