Method addExportedProviderOrModule

packages/core/injector/module.ts:457–472

(
    toExport: Provider | string | symbol | DynamicModule,
  )

  }

  public addExportedProviderOrModule(
    toExport: Provider | string | symbol | DynamicModule,
  ) {
    const addExportedUnit = (token: InjectionToken) =>
      this._exports.add(this.validateExportedProvider(token));

    if (this.isCustomProvider(toExport as any)) {
      return this.addCustomExportedProvider(toExport as any);
    } else if (isString(toExport) || isSymbol(toExport)) {
      return addExportedUnit(toExport);
    } else if (this.isDynamicModule(toExport)) {
      const { module: moduleClassRef } = toExport;
      return addExportedUnit(moduleClassRef);
    }
    addExportedUnit(toExport as Type<any>);
  }

  public addCustomExportedProvider(
    provider: