AngularFireModule from @angular/fire/compat not providing the database appropriately.

So I've been facing an issue for the past couple of days where whenever I try to use the **AngularFireDatabase** database to read or write to my Firebase database my console gives me the error:

`No provider found for Database2. Source: Standalone[_Homecomponent].`

I'm currently running Angular 20.0 as AngularFire 21.0 is yet to be fully fleshed out.

My dummy service to test the data looks like this below:

`import { Injectable } from '@angular/core';`
`import { AngularFireDatabase } from '@angular/fire/compat/database';`
`@Injectable({`
` providedIn: 'root'`
`})`
`export class Postingservice {`
`constructor(private afDb:AngularFireDatabase){}`
`viewPosts(){`
`return this.afDb.list("/posts").valueChanges();`
`}`
`}`

I've both tried instantiating the afDb in the constructor and using the inject() function and neither have worked to any avail.

Here also is my app.config.ts:

`import { ApplicationConfig, provideBrowserGlobalErrorListeners, provideZoneChangeDetection } from '@angular/core';`
`import { provideRouter } from '@angular/router';`

`import { initializeApp, provideFirebaseApp } from '@angular/fire/app';`
`import { getDatabase, provideDatabase } from '@angular/fire/database';`
`import { routes } from './app.routes';`

`export const appConfig: ApplicationConfig = {`
` providers: [`
`provideBrowserGlobalErrorListeners(),`
`provideZoneChangeDetection({ eventCoalescing: true }),`
` provideRouter(routes), `
`provideFirebaseApp(() => `
` initializeApp({`
`// FIREBASE CONFIG DATA`
`})),`
`provideDatabase(() => getDatabase()),`
`]`
`};`

I've even provided the provideDatabase() function even as it's not necessary for the AngularFireDatabase as a provider and likewise it's been to no avail...

And my application is bootstrapping correctly as it runs just fine until I create an instance of the afDb database in a component where I then get the above stated error. Kindly help.

まず、示されている app.config.ts と AngularFireDatabase を注入する Postingservice を使って injection エラーを再現します。compat のデータベース設定と standalone provider の設定を併せて確認し、その後、AngularFireDatabase を注入でき、viewPosts() が No provider found エラーなしで /posts を読み取ることを検証します。

索引モデルが issue の本文から書いたものです。