文档中已经讨论过了，只需要导入serverTimestamp。

import { updateDoc, serverTimestamp } from "firebase/firestore";

const docRef = doc(db, 'objects', 'some-id');

// Update the timestamp field with the value from the server
const updateTimestamp = await updateDoc(docRef, {
    timestamp: serverTimestamp()
});

import {serverTimestamp} from 'firebase/firestore';
然后只需将timestamp: firebase.firestore.FieldValue.serverTimestamp()更改为timestamp: serverTimestamp()

如果您在其他答案中得到类型错误，可以尝试以下操作：

import { Timestamp} from '@firebase/firestore';

createdAt: Timestamp.fromDate(new Date())