Firestore 中的 Cloud Functions FieldValue 增量 TypeError

Question

我正在 firebase 模拟器中测试云功能，并在尝试增加云 firestore 中的字段时收到错误。请检查下面我的代码和错误消息。谢谢你的帮助！

import * as functions from "firebase-functions";
import * as admin from "firebase-admin";

admin.initializeApp();

const db = admin.firestore();

export const newUserIncrementStat = functions.firestore.document("users/{uid}").onCreate((snap, context) => {
  const docRef = db.doc("stats/users");

  try {
    return docRef.set({
      totalUsers: admin.firestore.FieldValue.increment(1),
    }, {merge: true});

  } catch (e) {
    console.log("Something is wrong: ", e);
    return Promise.reject(e);
  }
});

Firebase 日志中的错误消息：

类型错误：无法读取未定义的属性（读取“增量”）

依赖关系

firebase 管理员：“^11.0.0”

firebase 函数：“^3.22.0”

火力基地：11.3.0

Answer 1

这是 firebase-admin 模块化改进的问题。您可以回滚到 firebase-admin v10.3.0 或使用模块化导入import { FieldValue } from 'firebase-admin/firestore';

import * as functions from "firebase-functions";
import * as admin from "firebase-admin";
import { FieldValue } from 'firebase-admin/firestore';

admin.initializeApp();

const db = admin.firestore();

export const newUserIncrementStat = 
functions.firestore.document("users/{uid}").onCreate((snap, context) => 
{
    const docRef = db.doc("stats/users");

    try {
    return docRef.set({
        totalUsers: FieldValue.increment(1),
    }, {merge: true});

    } catch (e) {
        console.log("Something is wrong: ", e);
        return Promise.reject(e);
    }
});

或者您可以完全转换为模块化导入：

import type { FieldValue, getFirestore } from 'firebase-admin/firestore';
import * as functions from "firebase-functions";
const { initializeApp } = require('firebase-admin/app');


const app = initializeApp();
const db = getFirestore();

export const newUserIncrementStat = 
functions.firestore.document("users/{uid}").onCreate((snap, context) => 
{
    const docRef = db.doc("stats/users");

    try {
    return docRef.set({
        totalUsers: FieldValue.increment(1),
    }, {merge: true});

    } catch (e) {
        console.log("Something is wrong: ", e);
        return Promise.reject(e);
    }
});

Answer 2

正如 @Min 评论的那样，错误是与 firebase 模拟器有关，将函数直接部署到谷歌云可以正常工作，没有任何错误。