Function ɵɵdeferEnableTimerScheduling

packages/core/src/defer/rendering.ts:464–488

(
  tView: TView,
  tDetails: TDeferBlockDetails,
  placeholderConfigIndex?: number | null,
  loadingConfigIndex?: number | null,
)

 * on the `@loading` or `@placeholder` blocks.
 */
export function ɵɵdeferEnableTimerScheduling(
  tView: TView,
  tDetails: TDeferBlockDetails,
  placeholderConfigIndex?: number | null,
  loadingConfigIndex?: number | null,
) {
  const tViewConsts = tView.consts;
  if (placeholderConfigIndex != null) {
    tDetails.placeholderBlockConfig = getConstant<DeferredPlaceholderBlockConfig>(
      tViewConsts,
      placeholderConfigIndex,
    );
  }
  if (loadingConfigIndex != null) {
    tDetails.loadingBlockConfig = getConstant<DeferredLoadingBlockConfig>(
      tViewConsts,
      loadingConfigIndex,
    );
  }

  // Enable implementation that supports timer-based scheduling.
  if (applyDeferBlockStateWithSchedulingImpl === null) {
    applyDeferBlockStateWithSchedulingImpl = applyDeferBlockStateWithScheduling;
  }
}

/**
 * Determines whether we should proceed with triggering a given defer block.