和您一样，我想使用这个ES6导入而不是CommonJS（require()）。

import { https } from 'firebase-functions';

我从here得到了这个答案，它有更多的信息。

您应该执行以下操作：
首先导入模块firebase-functions

// The Cloud Functions for Firebase SDK to create Cloud Functions and setup triggers.
const functions = require('firebase-functions');

然后，您可以调用onRequest()：

exports.date = functions.https.onRequest((req, res) => {
  // ...
});

您可以查看文档here.

TLDR：我所做的只是改变：

import functions from 'firebase-functions'

收件人：

import * as functions from 'firebase-functions`

说明：我在用

import functions from 'firebase-functions'

从TS到JS后，我的JS文件看起来像这样：

const firebase_functions_1 = __importDefault(require("firebase-functions"));

JS正在尝试导入从firebase-functions导出的default模块。问题是，当我查看node_modules/firebase-functions/lib/v1/index. d. ts时（将来可能会更改），它没有任何默认导出，因此我的JS代码正在导入undefined：

// node_modules/firebase-functions/lib/v1/index.d.ts
import * as logger from "../logger";
import * as analytics from "./providers/analytics";
import * as auth from "./providers/auth";
import * as database from "./providers/database";
import * as firestore from "./providers/firestore";
import * as https from "./providers/https";
import * as pubsub from "./providers/pubsub";
import * as remoteConfig from "./providers/remoteConfig";
import * as storage from "./providers/storage";
import * as tasks from "./providers/tasks";
import * as testLab from "./providers/testLab";
import { setApp as setEmulatedAdminApp } from "../common/app";
export { analytics, auth, database, firestore, https, pubsub, remoteConfig, storage, tasks, testLab, logger, };
export declare const app: {
    setEmulatedAdminApp: typeof setEmulatedAdminApp;
};
export * from "./cloud-functions";
export * from "./config";
export * from "./function-builder";
export * from "./function-configuration";

我所做的只是改变：

import functions from 'firebase-functions'

收件人：

import * as functions from 'firebase-functions`

或者只导入https模块：

import { https } from 'firebase-functions'

const helloWorld = https.onCall(...)

你可以走了。花了我点时间。