Function shouldTriggerDeferBlock

packages/core/src/defer/rendering.ts:493–506

(triggerType: TriggerType, lView: LView)

 * Determines whether we should proceed with triggering a given defer block.
 */
export function shouldTriggerDeferBlock(triggerType: TriggerType, lView: LView): boolean {
  // prevents triggering regular triggers when on the server.
  if (triggerType === TriggerType.Regular && typeof ngServerMode !== 'undefined' && ngServerMode) {
    return false;
  }

  // prevents triggering in the case of a test run with manual defer block configuration.
  const injector = lView[INJECTOR];
  const config = injector.get(DEFER_BLOCK_CONFIG, null, {optional: true});
  if (config?.behavior === DeferBlockBehavior.Manual) {
    return false;
  }
  return true;
}