迁移Ionic Firebase项目至独立组件架构时遭遇「Firebase API在注入上下文外调用」错误的解决方案求助

最近我在把基于NgModules的Ionic Firebase项目迁移到Angular独立组件架构时，碰到了一个棘手的错误：
Firebase API called outside injection context: user

我用的是Ionic Capacitor 7和Angular 20版本，不想像很多论坛说的那样直接关掉这个错误——总感觉忽略它会埋下潜在的稳定性风险。有没有其他开发者遇到过这个问题并找到合理的解决办法？

我的代码情况对比 #

1. 原NgModules架构下可正常运行的app.module.ts

import { NgModule, isDevMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouteReuseStrategy } from '@angular/router';
import { IonicModule, IonicRouteStrategy } from '@ionic/angular';
import { provideHttpClient ,HttpClient, HttpHeaders, HTTP_INTERCEPTORS } from '@angular/common/http';
import { AppComponent } from './app.component';
import { AppRoutingModule } from './app-routing.module';
import { getApp, initializeApp, provideFirebaseApp } from '@angular/fire/app';
import { getFirestore, provideFirestore } from '@angular/fire/firestore';
import { getStorage, provideStorage } from '@angular/fire/storage';
import { environment } from '../environments/environment';
import { Capacitor } from '@capacitor/core';
import { getAuth, indexedDBLocalPersistence, initializeAuth, provideAuth, } from '@angular/fire/auth';
import { ServiceWorkerModule } from '@angular/service-worker';

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    IonicModule.forRoot(),
    AppRoutingModule,
    provideFirebaseApp(() => initializeApp(environment.firebase)),
    provideAuth(() => {
      if (Capacitor.isNativePlatform()) {
        return initializeAuth(getApp(), { 
          persistence: indexedDBLocalPersistence 
        });
      } else {
        return getAuth() 
      }
    }),
    provideFirestore(() => getFirestore()),
    provideStorage(() => getStorage()),
    ServiceWorkerModule.register('ngsw-worker.js', {
      enabled: !isDevMode(),
      registrationStrategy: 'registerWhenStable:30000'
    }),
  ],
  providers: [{ provide: RouteReuseStrategy, useClass: IonicRouteStrategy }],
  bootstrap: [AppComponent],
})
export class AppModule {}

2. 迁移至独立组件架构后报错的main.ts

import { enableProdMode, importProvidersFrom } from '@angular/core';
import { bootstrapApplication } from '@angular/platform-browser';
import { RouteReuseStrategy, provideRouter, withPreloading, PreloadAllModules } from '@angular/router';
import { routes } from './app/app.routes';
import { AppComponent } from './app/app.component';
import { isDevMode } from '@angular/core';
import { provideHttpClient, withInterceptorsFromDi } from '@angular/common/http';
import { getApp, initializeApp, provideFirebaseApp } from '@angular/fire/app';
import { getFirestore, provideFirestore } from '@angular/fire/firestore';
import { getStorage, provideStorage } from '@angular/fire/storage';
import { environment } from './environments/environment';
import { Capacitor } from '@capacitor/core';
import { getAuth, indexedDBLocalPersistence, initializeAuth, provideAuth } from '@angular/fire/auth';
import { IonicRouteStrategy, provideIonicAngular } from '@ionic/angular/standalone';
import { provideServiceWorker } from '@angular/service-worker';

bootstrapApplication(AppComponent, {
  providers: [
    { provide: RouteReuseStrategy, useClass: IonicRouteStrategy },
    provideIonicAngular(),
    provideRouter(routes, withPreloading(PreloadAllModules)),
    provideFirebaseApp(() => initializeApp(environment.firebase)),
    provideAuth(() => {
      if (Capacitor.isNativePlatform()) {
        return initializeAuth(getApp(), { 
          persistence: indexedDBLocalPersistence 
        });
      } else {
        return getAuth() 
      }
    }),
    provideFirestore(() => getFirestore()),
    provideStorage(() => getStorage()),
    provideHttpClient(withInterceptorsFromDi()),
    provideServiceWorker('ngsw-worker.js', {
      enabled: !isDevMode(),
      registrationStrategy: 'registerWhenStable:30000'
    }),
  ]
});

我已尝试的排查方向 #

• 确认provideFirebaseApp放在所有Firebase相关provider的最前面，保证App初始化优先级
• 检查项目中所有使用Firebase Auth的场景，均通过依赖注入private auth: Auth获取服务，没有在构造函数外直接调用getAuth()

想请教大家的问题 #

有没有其他可能的原因导致这个注入上下文错误？或者有没有经过验证的解决方案可以尝试？非常感谢！

内容来源于stack exchange