1npm install firebase @angular/fire

1ng add @angular/fire

1import { BrowserModule } from '@angular/platform-browser';
2import { NgModule } from '@angular/core';
3import { AppComponent } from './app.component';
4
5// 1. Import the libs you need
6import { AngularFireModule } from '@angular/fire';
7import { AngularFirestoreModule } from '@angular/fire/firestore';
8import { AngularFireStorageModule } from '@angular/fire/storage';
9import { AngularFireAuthModule } from '@angular/fire/auth';
10
11// 2. Add your credentials from step 1
12const config = {
13    apiKey: '<your-key>',
14    authDomain: '<your-project-authdomain>',
15    databaseURL: '<your-database-URL>',
16    projectId: '<your-project-id>',
17    storageBucket: '<your-storage-bucket>',
18    messagingSenderId: '<your-messaging-sender-id>'
19};
20
21@NgModule({
22  imports: [
23    BrowserModule,
24    // 3. Initialize
25    AngularFireModule.initializeApp(config),
26    AngularFirestoreModule, // firestore
27    AngularFireAuthModule, // auth
28    AngularFireStorageModule // storage
29  ],
30  declarations: [ AppComponent ],
31  bootstrap: [ AppComponent ]
32})
33export class AppModule {}
34

1import { AngularFirestore } from '@angular/fire/firestore';
2
3@Component(...)
4export class SomeComponent {
5
6  constructor(private db: AngularFirestore) {
7      const things = db.collection('things').valueChanges();
8      things.subscribe(console.log);
9  }
10}
11

1look for other frameworks before you decide
2