Function ɵɵdeferPrefetchOnIdle

packages/core/src/defer/instructions.ts:386–398

(timeout?: number)

 * @codeGenApi
 */
export function ɵɵdeferPrefetchOnIdle(timeout?: number) {
  const lView = getLView();
  const tNode = getCurrentTNode()!;

  if (ngDevMode) {
    const expression = timeout ? `prefetch on idle(${timeout})` : 'prefetch on idle';
    trackTriggerForDebugging(lView[TVIEW], tNode, expression);
  }

  if (!shouldAttachTrigger(TriggerType.Prefetch, lView, tNode)) return;

  scheduleDelayedPrefetching(onIdleWrapper({timeout}));
}

/**
 * Sets up logic to handle the `on idle` deferred trigger.