Firebaseでfunctionsの関数をdeploy時にasyncのエラー

firebaseでデプロイ時にfuncionsへ関数のデプロイに失敗

エラー文

Function failed on loading user code. Error message: Code in file lib/index.js can't be loaded.
Is there a syntax error in your code?
Detailed stack trace: /srv/node_modules/@google-cloud/firestore/build/src/collection-group.js:54
    async *getPartitions(desiredPartitionCount) {
          ^

SyntaxError: Unexpected token *
    at createScript (vm.js:80:10)
    at Object.runInThisContext (vm.js:139:10)
    at Module._compile (module.js:617:28)
    at Object.Module._extensions..js (module.js:664:10)
    at Module.load (module.js:566:32)
    at tryModuleLoad (module.js:506:12)
    at Function.Module._load (module.js:498:3)
    at Module.require (module.js:597:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/srv/node_modules/@google-cloud/firestore/build/src/index.js:39:28)

⚠  functions: Warning: Node.js 8 functions are deprecated and will stop running on 2021-03-15. Please upgrade to Node.js 10 or greater by adding an entry like this to your package.json:
    
    {
      "engines": {
        "node": "12"
      }
    }

The Firebase CLI will stop deploying Node.js 8 functions in new versions beginning 2020-12-15, and deploys from all CLI versions will halt on 2021-02-15. For additional information, see: https://firebase.google.com/support/faq#functions-runtime



Functions deploy had errors with the following functions:
	addDataset


To try redeploying those functions, run:
    firebase deploy --only "functions:addDataset"


To continue deploying other features (such as database), run:
    firebase deploy --except functions

Error: Functions did not deploy properly.

async *getPartitions(desiredPartitionCount)
非同期通信の関数データ付近でエラーが起きているとわかった。

エラー対処方法

functionsのpackage.jsonの中身を

"dependencies": {
    "firebase-admin": "^9.2.0",
    "firebase-functions": "^3.11.0"
  },
  "devDependencies": {
     "@typescript-eslint/eslint-plugin": "^3.9.1",
    "@typescript-eslint/parser": "^3.8.0",
    "eslint": "^7.6.0",
    "eslint-plugin-import": "^2.22.0",
    "typescript": "^3.8.0",
    "firebase-functions-test": "^0.2.0"
  },

から

"dependencies": {
    "firebase-admin": "^8.6.0",
    "firebase-functions": "^3.3.0"
  },
  "devDependencies": {
    "tslint": "^5.12.0",
    "typescript": "^3.2.2",
    "firebase-functions-test": "^0.1.6"

へ
削除及び修正し変更。

eslintと相性があわなかったのかもっと予想・・・。
Typescriptに詳しくないので、詳しいことがわかりません。

ヒントになった参考記事

以上となります。

ここは違う、ここはこうしたほうがいいかも？
等々ございましたら、ご指摘いただけますと幸いです。

最後までみていただきありがとうございます。