Function getInjectableMetadata

packages/core/src/di/jit/injectable.ts:108–131

(type: Type<any>, srcMeta?: Injectable)

}

function getInjectableMetadata(type: Type<any>, srcMeta?: Injectable): R3InjectableMetadataFacade {
  // Allow the compilation of a class with a `@Injectable()` decorator without parameters
  const meta: Injectable = srcMeta || {providedIn: null};
  const compilerMeta: R3InjectableMetadataFacade = {
    name: type.name,
    type: type,
    typeArgumentCount: 0,
    providedIn: meta.providedIn,
  };
  if ((isUseClassProvider(meta) || isUseFactoryProvider(meta)) && meta.deps !== undefined) {
    compilerMeta.deps = convertDependencies(meta.deps);
  }
  // Check to see if the user explicitly provided a `useXxxx` property.
  if (isUseClassProvider(meta)) {
    compilerMeta.useClass = meta.useClass;
  } else if (isUseValueProvider(meta)) {
    compilerMeta.useValue = meta.useValue;
  } else if (isUseFactoryProvider(meta)) {
    compilerMeta.useFactory = meta.useFactory;
  } else if (isUseExistingProvider(meta)) {
    compilerMeta.useExisting = meta.useExisting;
  }
  return compilerMeta;
}