firebase does not have database function

I tried to use the firebase, but it does not have database function which is required to change, remove, or retrieve data from the server (Firebase Realtime Database). I think I install the firebase correctly because when I console.log firebase after importing it, it shows an object.

I tried the following code:

import React, { Component } from "react";  import classes from "./Body.module.css"  import axios from "../../axios";  import Aux from "../../hoc/Auxiliary/Auxiliary";        import firebase from "firebase/app";  import "firebase/analytics";  import "firebase/auth";  import "firebase/firestore";    const firebaseConfig = {      apiKey: "AIzaSyCjz2XRLma2GtEfW2doYBXjyrZQhYyKTc0",      authDomain: "todolist-2d8de.firebaseapp.com",      databaseURL: "https://todolist-2d8de-default-rtdb.firebaseio.com",      projectId: "todolist-2d8de",      storageBucket: "todolist-2d8de.appspot.com",      messagingSenderId: "634814381180",      appId: "1:634814381180:web:5d6e3a5465276f83921df9",      measurementId: "G-V4XB270M1E"    };    firebase.initializeApp(firebaseConfig);     class Body extends Component{      state = {...      }        setHandler = () =>{          console.log(firebase);      }            ...    }    

After calling the setHandler function, I got this object:

{__esModule: true, initializeApp: ƒ, app: ƒ, registerVersion: ƒ, setLogLevel: ƒ, …}

INTERNAL: {components: Map(14), registerComponent: ƒ, removeApp: ƒ, useAsService: ƒ, createFirebaseNamespace: ƒ, …}

SDK_VERSION: "8.0.1"

User: ƒ Im(a, b, c)

analytics: ƒ (appArg)

app: ƒ app(name)

apps: (...)

auth: ƒ (appArg)

default: {__esModule: true, initializeApp: ƒ, app: ƒ, registerVersion: ƒ, setLogLevel: ƒ, …}

firestore: ƒ (appArg)

initializeApp: ƒ ()

installations: ƒ (appArg)

onLog: ƒ onLog(logCallback, options)

registerVersion: ƒ registerVersion(libraryKeyOrName, version, variant)

setLogLevel: ƒ setLogLevel(level)

__esModule: true

get apps: ƒ getApps()

proto: Object

As you see, there is no such a field called database, which is what I need. Anyone please have an idea how to fix it?

It must be able to work in the following way:

function writeUserData(userId, name, email, imageUrl) {    firebase.database().ref('users/' + userId).set({      username: name,      email: email,      profile_picture : imageUrl    });  }

https://stackoverflow.com/questions/65516498/firebase-does-not-have-database-function December 31, 2020 at 12:06PM