Function renderSlot

packages/angular/src/lib/slots/slot.utils.ts:41–84

(
  viewContainer: ViewContainerRef,
  options: RenderSlotOptions<T>,
)

 * ```
 */
export function renderSlot<T = any>(
  viewContainer: ViewContainerRef,
  options: RenderSlotOptions<T>,
): ComponentRef<T> | EmbeddedViewRef<T> | null {
  const { slot, defaultComponent, props, injector, outputs } = options;

  viewContainer.clear();

  const effectiveSlot = slot ?? defaultComponent;
  const effectiveInjector = injector ?? viewContainer.injector;

  if (effectiveSlot instanceof TemplateRef) {
    // TemplateRef: render template
    return viewContainer.createEmbeddedView(effectiveSlot, {
      $implicit: props ?? {},
      props: props ?? {},
    } as any);
  } else if (isComponentType(effectiveSlot)) {
    // Component type - wrap in try/catch for safety
    try {
      return createComponent(
        viewContainer,
        effectiveSlot as Type<T>,
        props,
        effectiveInjector,
        outputs,
      );
    } catch (error) {
      console.warn("Failed to create component:", effectiveSlot, error);
      // Fall through to default component
    }
  }

  // Default: render default component if provided
  return defaultComponent
    ? createComponent(
        viewContainer,
        defaultComponent,
        props,
        effectiveInjector,
        outputs,
      )
    : null;
}

/**
 * Creates a component and applies properties.