I try to connect to firebase by react native . here is code

import React, {Component} from 'react'
import {View} from 'react-native'
import Card from './card'
import { initializeApp } from 'firebase/app'
import firebase from 'firebase/compat/app'


const firebaseConfig = {
  apiKey: "",
  authDomain: "tinderclone-99d8e.firebaseapp.com",
  projectId: "tinderclone-99d8e",
  storageBucket: "tinderclone-99d8e.appspot.com",
  messagingSenderId: "264605926507",
  appId: "1:264605926507:web:c9309a6669322ef6839d2e",
  databaseURL:''
  
};


firebase.initializeApp(firebaseConfig)

export default class App extends Component {

  state = {
    profileIndex: 0,
  }

  componentWillMount() {
    firebase.database().ref().child('users').once('value', (snap) => {
      console.log('Data', snap.val())
    })
  }


  nextCard = () => {
    this.setState({profileIndex: this.state.profileIndex   1})
  }

  render() {
    const {profileIndex} = this.state
    return (
      <View style={{flex:1}}>
        {profiles.slice(profileIndex, profileIndex   3).reverse().map((profile) => {
          return (
            <Card
              key={profile.id}
              profile={profile}
              onSwipeOff={this.nextCard}
            />
          )
        })}
      </View>
    )
  }
}

const profiles = [
  {
    id: '259389830744794',
    name: 'Candice',
    birthday: '10/18/1986',
    bio: 'Supermodel',
  },
  {
    id: '720115413',
    name: 'Alessandra',
    birthday: '1/10/1989',
    bio: 'Dancer',
  },
  {
    id: '169571172540',
    name: 'Miranda',
    birthday: '12/12/1983',
    bio: 'Doctor',
  },
  {
    id: '1476279359358140',
    name: 'Alissa',
    birthday: '2/11/1990',
    bio: 'Comedian',
  },
  {
    id: '1140849052644433',
    name: 'Behati',
    birthday: '3/23/1991',
    bio: 'Developer',
  },
  {
    id: '912478262117011',
    name: 'Rosie',
    birthday: '9/4/1989',
    bio: 'Artist',
  },
  {
    id: '173567062703796',
    name: 'Kendall',
    birthday: '8/17/1992',
    bio: 'Truck Driver',
  },
]

here is database

here is error

While trying to resolve module `firebase` from file `C:\Users\PC\Desktop\de\App.js`, the package `C:\Users\PC\Desktop\de\node_modules\firebase\package.json` was successfully found. However, this package itself specifies a `main` module field that could not be resolved (`C:\Users\PC\Desktop\de\node_modules\firebase\index`. Indeed, none of these files exist:

I already install firebase by npm I try to run npm install and npm start again by searching others answers their answer not work for me . in 2021 , firebase is not same as before . I dont know how can solve this problem can someone help me please

CodePudding user response：

You importing import * as firebase from 'firebase' in the top of your file..Try to import this line and tell me if it works. import firebase from "firebase/compat/app";

Some paths of the firebase have changed a long time ago so if you are watching legacy code snipets maybe you will have errors.