Function registerPreOrderHooks

packages/core/src/render3/hooks.ts:53–77

(
  directiveIndex: number,
  directiveDef: DirectiveDef<any>,
  tView: TView,
)

 * @param tView The current TView
 */
export function registerPreOrderHooks(
  directiveIndex: number,
  directiveDef: DirectiveDef<any>,
  tView: TView,
): void {
  ngDevMode && assertFirstCreatePass(tView);
  const {ngOnChanges, ngOnInit, ngDoCheck} = directiveDef.type.prototype as OnChanges &
    OnInit &
    DoCheck;

  if (ngOnChanges as Function | undefined) {
    const wrappedOnChanges = getNgOnChangesFeatureImpl()(directiveDef);
    (tView.preOrderHooks ??= []).push(directiveIndex, wrappedOnChanges);
    (tView.preOrderCheckHooks ??= []).push(directiveIndex, wrappedOnChanges);
  }

  if (ngOnInit) {
    (tView.preOrderHooks ??= []).push(0 - directiveIndex, ngOnInit);
  }

  if (ngDoCheck) {
    (tView.preOrderHooks ??= []).push(directiveIndex, ngDoCheck);
    (tView.preOrderCheckHooks ??= []).push(directiveIndex, ngDoCheck);
  }
}

/**
 *