Функции Firebase не могут развертываться: SyntaxError: Неожиданная функция токена

Я пытаюсь развернуть функцию в firebase, и во время развертывания я получаю сообщение об ошибке

Ошибка: функции развернуты неправильно.

Может ли это быть связано с асинхронной функцией?

Фактическое поведение Функции развертываются с ошибками. Кли показывает следующее сообщение:

================ журнал консоли ================

> eslint .
✔  functions: Finished running predeploy script.
i  functions: ensuring necessary APIs are enabled...
✔  functions: all necessary APIs are enabled
i  functions: preparing functions directory for uploading...
i  functions: packaged functions (56.39 KB) for uploading
✔  functions: functions folder uploaded successfully
i  functions: updating function sendContactEmailOAuth...
⚠  functions[sendContactEmailOAuth]: Deployment error.
Function load error: Code in file index.js can't be loaded.
Is there a syntax error in your code?
Detailed stack trace: /user_code/index.js:13
 async function getJwt() {
       ^^^^^^^^

================ файл функций index.js ================

const functions = require('firebase-functions');


const admin = require('firebase-admin');
   admin.initializeApp();

   const { JWT } = require('google-auth-library/build/src/index');

   exports.sendContactEmailOAuth = functions.https.onRequest((req, res) => {
 const sender_msg = 'just a test'
 const email = '[email protected]'

 async function getJwt() {
   const client = new JWT(
     functions.config().service_key.client_email,
     null,
     functions.config().service_key.private_key,
     ['https://www.googleapis.com/auth/cloud-platform', 'https://mail.google.com'],
   );
     await client.authorize();
      const url = 'https://www.googleapis.com/dns/v1/projects/${functions.config().service_key.project_id}';
   const res = await client.request({ url });
   console.log(res.data);
 }

getJwt();

  /*  send email with nodemailer to be inserted here */
 });

================ файл package.json ================

{
 "name": "functions",
 "description": "Cloud Functions for Firebase",
 "scripts": {
   "lint": "eslint .",
   "serve": "firebase serve --only functions",
   "shell": "firebase functions:shell",
   "start": "npm run shell",
   "deploy": "firebase deploy --only functions",
   "logs": "firebase functions:log"
 },
 "dependencies": {
   "firebase-admin": "~5.12.0",
   "firebase-functions": "^1.0.2",
   "firebase-tools": "^3.18.4",
   "google-auth-library": "^1.4.0",
   "nodemailer": "^4.6.4"
 },
 "devDependencies": {
   "eslint": "^4.12.0",
   "eslint-plugin-promise": "^3.6.0"
 },
 "private": true
 }

Ответы

...
"dependencies": {
    "firebase-admin": "^8.5.0",
    "firebase-functions": "^3.2.0"
  },
  "devDependencies": {
    "tslint": "~5.19.0",
    "typescript": "~3.6.2"
  },
  "engines": {
    "node": "10"
  }
...