Type Alias ProviderFactoryToken<T>

Type declaration

• Optionalinject?: ProviderIdentifier[]

  Optional list of providers to be injected into the context of the Factory function.

  Note: The current module container context is available too.

  ProviderModule.create({
    id: 'FactoryProviderModule',
    providers: [
      DatabaseService,
      {
        provide: 'DATABASE_SECRET',
        useFactory: (dbService: DatabaseService) => {
          // Here you have access to the already resolved `DatabaseService` of the `FactoryProviderModule`.
          return dbService.getSecret();
        },
        inject: [DatabaseService]
      }
    ]
  });
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• useFactory: (...providers: any[]) => T

  Factory function that returns an instance of the provider to be injected.

  Example

  const connectionProvider = {
    provide: 'CONNECTION',
    useFactory: (optionsService: OptionsService, secondService: SecondService) => {
      const options = optionsService.get();
  
      return new DatabaseConnection(options);
    },
    // `inject` is optional.
    inject: [OptionsService, SecondService]
  };
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