检测到类型 "Timestamp" 的对象与预期实例不匹配

Question

我想知道为什么 Timestamp 对象没有像我预期的那样工作？

它在测试环境中工作（我使用 Mocha），但在部署时抛出错误。

index.ts

import { Timestamp, QuerySnapshot } from "@google-cloud/firestore";
....

async someFunction() {
   let col = firestore.collection("mycollection");
   let now = Timestamp.now();
   let twentyMinsAgo = Timestamp.fromMillis(now.toMillis() - (1200 * 1000));

   return col
      .where('LastEdited', '>=', twentyMinsAgo) //This throws error
      .get()
}

堆栈跟踪

Argument "value" is not a valid QueryValue. 
Detected an object of type "Timestamp" that doesn't match the expected instance. 
Please ensure that the Firestore types you are using are from the same NPM package.
      at Validator.(anonymous function).err [as isQueryValue] (/user_code/node_modules/firebase-admin/node_modules/@google-cloud/firestore/build/src/validate.js:99:27)
      at CollectionReference.where (/user_code/node_modules/firebase-admin/node_modules/@google-cloud/firestore/build/src/reference.js:940:25)

package.json

"dependencies": {
   ....
   "@google-cloud/firestore": "^0.16.0",
   "firebase-admin": "~6.0.0",
   "firebase-functions": "^2.0.5"
}

Answer 1

现在我明白为什么会抛出错误了。因为我单独导入 Firestore 对象，而我应该只使用 Firebase Admin SDK 中的 Firestore 对象。

我改变了什么：

1. 从 package.json

中删除“@google-cloud/firestore”依赖项

2. 使用admin.firestore.Timestamp对象。

index.ts

async someFunction() {
   let col = firestore.collection("mycollection");
   let now = admin.firestore.Timestamp.now();
   let twentyMinsAgo = admin.firestore.Timestamp.fromMillis(now.toMillis() - (1200 * 1000));

   col.where('LastEdited', '>=', twentyMinsAgo) //Now ok
      .get()
}

Answer 2

使用 firebase admin 时避免直接导入和使用任何客户端包

所以而不是

 import * as admin  from "firebase-admin";
 import firebase from "firebase/app";

 admin.firestore().collection("name").set({
       date: firebase.firestore.Timestamp.now()
})

改用这个

 import * as admin  from "firebase-admin";

 admin.firestore().collection("name").set({
       date: admin.firestore.Timestamp.now()
})

2022 编辑：

For newer version of Firebase ^10.0.2; Timestamp can be imported directly

import * as admin  from "firebase-admin";
import { Timestamp } from "firebase-admin/firestore"; 
 
admin.firestore().collection("name").set({
   date: Timestamp.now(),
})