Function isValidStateChange

packages/core/src/defer/rendering.ts:409–414

* Checks whether we can transition to the next state. * * We transition to the next state if the previous state was represented * with a number that is less than the next state. For example, if the current * state is "loading" (represented as `1`), we should not show a placeholder * (represente

(
  currentState: DeferBlockState | DeferBlockInternalState,
  newState: DeferBlockState,
)

 * or an error state (represented as `3`).
 */
function isValidStateChange(
  currentState: DeferBlockState | DeferBlockInternalState,
  newState: DeferBlockState,
): boolean {
  return currentState < newState;
}

/** Utility function to render placeholder content (if present) */
export function renderPlaceholder(lView: LView, tNode: TNode) {