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npm install firebase @ angular / fire --save
import { Component } from '@angular/core';
import { AngularFirestore } from '@angular/fire/firestore';
import { Observable } from 'rxjs';
@Component({
selector: 'app-root',
template: `
<ul>
<li *ngFor="let item of items | async">
{{ item.name }}
</li>
</ul>
`
})
export class MyApp {
items: Observable<any[]>;
constructor(db: AngularFirestore) {
this.items = db.collection('items').valueChanges();
}
}
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