Function multiFactory

packages/core/src/render3/di_setup.ts:384–410

* Creates a multi factory.

(
  factoryFn: (
    this: NodeInjectorFactory,
    _: undefined,
    flags: InternalInjectFlags | undefined,
    tData: TData,
    lData: LView,
    tNode: TDirectiveHostNode,
  ) => any,
  index: number,
  isViewProvider: boolean,
  isComponent: boolean,
  f: () => any,
  provider: Provider,
)

 * Creates a multi factory.
 */
function multiFactory(
  factoryFn: (
    this: NodeInjectorFactory,
    _: undefined,
    flags: InternalInjectFlags | undefined,
    tData: TData,
    lData: LView,
    tNode: TDirectiveHostNode,
  ) => any,
  index: number,
  isViewProvider: boolean,
  isComponent: boolean,
  f: () => any,
  provider: Provider,
): NodeInjectorFactory {
  const factory = new NodeInjectorFactory(
    factoryFn,
    isViewProvider,
    ɵɵdirectiveInject,
    ngDevMode ? providerName(provider) : null,
  );
  factory.multi = [];
  factory.index = index;
  factory.componentProviders = 0;
  multiFactoryAdd(factory, f, isComponent && !isViewProvider);
  return factory;
}

function providerName(provider: Provider): string | null {
  if (Array.isArray(provider)) {