Function inferHydrationState

packages/core/src/render3/util/control_flow.ts:291–305

* Infers the hydration state of a specific defer block. * @param tDetails Static defer block information. * @param lDetails Instance defer block information. * @param registry Registry coordinating the hydration of defer blocks.

(
  tDetails: TDeferBlockDetails,
  lDetails: LDeferBlockDetails,
  registry: DehydratedBlockRegistry | null,
)

 * @param registry Registry coordinating the hydration of defer blocks.
 */
function inferHydrationState(
  tDetails: TDeferBlockDetails,
  lDetails: LDeferBlockDetails,
  registry: DehydratedBlockRegistry | null,
): DeferBlockData['incrementalHydrationState'] {
  if (
    registry === null ||
    lDetails[SSR_UNIQUE_ID] === null ||
    tDetails.hydrateTriggers === null ||
    tDetails.hydrateTriggers.has(DeferBlockTrigger.Never)
  ) {
    return 'not-configured';
  }
  return registry.has(lDetails[SSR_UNIQUE_ID]) ? 'dehydrated' : 'hydrated';
}

/**
 * Gets the current LView that is rendered out in a defer block.