带有 Typescript 的 Firebase-admin 拒绝 FieldValues

Question

我正在使用

firebase-admin

来控制使用 Cloud Functions 和 TypeScript 的 firestore 数据库。当我将类型添加到我的集合引用时，我不能再使用

add

s

FieldValue

。

add

的参数类型需要一个与集合文档匹配的文字对象，没有任何

FieldValue

s。我如何在 TypeScript 中使用

FieldValue

s 和

firebase-admin

？

这是一个最小的例子：

import { firestore, initializeApp } from 'firebase-admin'
import { firebaseConfig } from './secret'
import { https } from 'firebase-functions'

interface User {
  displayName: string
  createdAt: {
    seconds: number
    nanoseconds: number
  }
}
function dataFromFirestore (snapshot: firestore.QueryDocumentSnapshot<User>): User {
  const data = snapshot.data()
  const doc = { id: snapshot.id, ...data }
  return doc
}
function dataToFirestore (data: Partial<User>): Partial<User> {
  return data
}
const converter = {
  toFirestore: dataToFirestore,
  fromFirestore: dataFromFirestore
}
initializeApp(firebaseConfig)
const db = firestore()
const usersCollectionRef = db.collection('users').withConverter(converter)
export const cloudFunction = https.onCall(async (props, context) => {
  if (context.app == null) {
    throw new https.HttpsError(
      'failed-precondition',
      'The function must be called from an App Check verified app.'
    )
  }
  const newUserData = {
    displayName: 'New User',
    createdAt: firestore.FieldValue.serverTimestamp()
  }
  await usersCollectionRef.add(newUserData)
  // Argument of type '{ displayName: string; createdAt: firestore.FieldValue; }' is not assignable to parameter of type 'User'.
  // Types of property 'createdAt' are incompatible.
  // Type 'FieldValue' is missing the following properties from type '{ seconds: number; nanoseconds: number; }': seconds, nanoseconds
})