[Firestore] admin.firestore.Timestamp.now() fails with firebase-admin 11, works in 10.3 (emulator)

[REQUIRED] Step 2: Describe your environment

• Operating System version: macOS Monterey 12.4
• Firebase SDK version: 11.3.0
• Firebase Product: Firestore
• Node.js version: v16.14.2
• NPM version: 8.15.0

tsconfig.json

{
  "compilerOptions": {
    "lib": ["ES2020"],
    "module": "commonjs",
    "target": "ES2020",
    "noImplicitReturns": true,
    "noUnusedLocals": true,
    "outDir": "dist",
    "sourceMap": true,
    "strict": true,
    "allowSyntheticDefaultImports": true
  },
  "compileOnSave": true,
  "include": ["src"],
  "exclude": ["node_modules", "**/node_modules/*"]
}

package.json

{
  "name": "functions",
  "scripts": {
    "build": "rm -rf dist && tsc",
    "watch": "rm -rf dist && npx tsc -w --skipLibCheck --noEmitOnError",
    "serve": "firebase emulators:start --import=./.cache --export-on-exit",
    "deploy": "firebase deploy --only hosting",
    "logs": "firebase functions:log"
  },
  "engines": {
    "node": "16"
  },
  "main": "dist/index.js",
  "dependencies": {
    "@firebase/app-compat": "^0.1.29",
    "axios": "^0.27.2",
    "cors": "^2.8.5",
    "firebase-admin": "^11.0.0",
    "firebase-functions": "^3.22.0",
    "stripe": "^9.14.0"
  },
  "devDependencies": {
    "@firebase/app-types": "^0.7.0",
    "@types/cors": "^2.8.12",
    "@types/stripe-v3": "^3.1.27",
    "firebase-functions-test": "^2.2.0",
    "jest": "^28.1.3",
    "typescript": "^4.7.4"
  },
  "private": true
}

[REQUIRED] Step 3: Describe the problem

admin.firestore.Timestamp.now() throws TypeError: Cannot read properties of undefined (reading ‘now’) (~same with admin.firestore.increment(1)).

In emulator, I haven’t dared try it “live”.

Steps to reproduce / Relevant Code:

test.ts

import * as functions from 'firebase-functions'
import * as admin from 'firebase-admin'
export const test = functions.region('europe-west1').https.onRequest(async (request, response) => {
  const res = await admin.firestore().collection('mytable').add({
    createdAt: admin.firestore.Timestamp.now(),
  })
  response.json({
    id: res.id,
  })
})

Result:

TypeError: Cannot read properties of undefined (reading 'now')

[lahirumaramba]

It seems like as we move on to the modular SDK we should import the types as needed. The following seems to work for me:

Node.js

const { initializeApp } = require('firebase-admin/app');
const { getFirestore, Timestamp, FieldValue } = require('firebase-admin/firestore');

initializeApp();

const f = getFirestore();
const t = Timestamp.now();
const fv = FieldValue.delete();

TypeScript

import { getFirestore, Timestamp, FieldValue, Firestore } from 'firebase-admin/firestore';
import { initializeApp } from 'firebase-admin/app';

initializeApp()

const f: Firestore = getFirestore();
const t: Timestamp = Timestamp.now();
const fv: FieldValue = FieldValue.delete();

TypeScript

import * as admin from 'firebase-admin';

admin.initializeApp();

const f = admin.firestore();
const t = admin.firestore.Timestamp.now();
const fv = admin.firestore.FieldValue.delete();

tsconfig.json

{
  "compilerOptions": {
    "module": "commonjs",
    "esModuleInterop": true,
    "target": "es6",
    "moduleResolution": "node",
    "sourceMap": true,
    "outDir": "dist"
  },
  "lib": ["es2015"]
}

package.json

{
  "name": "repro",
  "version": "1.0.0",
  "main": "dist/test.js",
  "scripts": {
    "start": "tsc && node dist/test.js"
  },
  "engines": {
    "node": "16"
  },
  "devDependencies": {
    "typescript": "^4.7.4"
  },
  "dependencies": {
    "firebase-admin": "^11.0.1"
  }
}

├─┬ firebase-admin@11.0.1
│ ├── @fastify/busboy@1.1.0
│ ├── @firebase/database-compat@0.2.4
│ ├── @firebase/database-types@0.9.12
│ ├── @google-cloud/firestore@5.0.2
│ ├── @google-cloud/storage@6.3.0
│ ├── @types/node@18.6.5
│ ├── jsonwebtoken@8.5.1
│ ├── jwks-rsa@2.1.4
│ ├── node-forge@1.3.1
│ └── uuid@8.3.2
└── typescript@4.7.4

[milo-]

Also experiencing the same issue, and firestore.v1.FirestoreAdminClient is also undefined