Function validateInjectionKey

packages/upgrade/src/common/src/util.ts:110–156

(
  $injector: IInjectorService,
  downgradedModule: string,
  injectionKey: string,
  attemptedAction: string,
)

}

export function validateInjectionKey(
  $injector: IInjectorService,
  downgradedModule: string,
  injectionKey: string,
  attemptedAction: string,
): void {
  const upgradeAppType = getUpgradeAppType($injector);
  const downgradedModuleCount = getDowngradedModuleCount($injector);

  // Check for common errors.
  switch (upgradeAppType) {
    case UpgradeAppType.Dynamic:
    case UpgradeAppType.Static:
      if (downgradedModule) {
        throw new Error(
          `Error while ${attemptedAction}: 'downgradedModule' unexpectedly specified.\n` +
            "You should not specify a value for 'downgradedModule', unless you are downgrading " +
            "more than one Angular module (via 'downgradeModule()').",
        );
      }
      break;
    case UpgradeAppType.Lite:
      if (!downgradedModule && downgradedModuleCount >= 2) {
        throw new Error(
          `Error while ${attemptedAction}: 'downgradedModule' not specified.\n` +
            'This application contains more than one downgraded Angular module, thus you need to ' +
            "always specify 'downgradedModule' when downgrading components and injectables.",
        );
      }

      if (!$injector.has(injectionKey)) {
        throw new Error(
          `Error while ${attemptedAction}: Unable to find the specified downgraded module.\n` +
            'Did you forget to downgrade an Angular module or include it in the AngularJS ' +
            'application?',
        );
      }

      break;
    default:
      throw new Error(
        `Error while ${attemptedAction}: Not a valid '@angular/upgrade' application.\n` +
          'Did you forget to downgrade an Angular module or include it in the AngularJS ' +
          'application?',
      );
  }
}

export class Deferred<R> {
  promise: Promise<R>;