I am developing an Firebase Functions.

But when I try to deploy the Functions, it failed.

At first time, I followed the official guide document: HERE

The sample code is using like:

import {
  onDocumentCreated,
  Change,
  FirestoreEvent
} from "firebase-functions/v2/firestore";

But when I tried to deploy the functions, I faced the below error:

Error: Failed to load function definition from source: Failed to generate manifest from function source: SyntaxError: Cannot use import statement outside a module

I tried to find solution, and I found it.
So I fixed the line.

as is

import {
  onDocumentCreated,
  Change,
  FirestoreEvent
} from "firebase-functions/v2/firestore";

to be

const {onDocumentCreated} = require("firebase-functions/v2/firestore");

But after that, the error was changed to:

Error: Failed to load function definition from source: Failed to generate manifest from function source: Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './v2/firestore' is not defined by "exports" in /{my-repo}/functions/node_modules/firebase-functions/package.json

What should I do???

There is no longer any mention of it in the official documentation.
What am I missing?