Angular 嵌套模块中的APP_初始值设定项顺序

我有两个模块——主模块和一个导入模块。它们都有

APP\u初始值设定项

。初始化者的调用顺序是否得到保证？我测试了几次，总是先调用内部，但这只是巧合吗

// app.module.ts
@NgModule({
  imports: [
    EnvironmentModule,
  ],
  providers: [
    PermissionsService,
    {
      provide: APP_INITIALIZER,
      useFactory: (permissionsService: PermissionsService) => {
        return () => permissionsService.fetchUserPermissions()
      },
      deps: [PermissionsService],
      multi: true,
    },
  ],
  bootstrap: [AppComponent],
})
export class AppModule {}

// environment.module.ts
@NgModule({
  imports: [],
  declarations: [],
  providers: [
    EnvironmentService,
    {
      provide: APP_INITIALIZER,
      useFactory: (environmentService: EnvironmentService) => () => environmentService.getEnvConfig(),
      deps: [EnvironmentService],
      multi: true,
    },
  ],
})
export class EnvironmentModule {}