Function stringifyState

packages/core/src/render3/util/control_flow.ts:268–283

* Turns the `DeferBlockState` into a string which is more readable than the enum form. * * @param lDetails Information about the * @returns

(state: DeferBlockState | DeferBlockInternalState)

 * @returns
 */
function stringifyState(state: DeferBlockState | DeferBlockInternalState): DeferBlockData['state'] {
  switch (state) {
    case DeferBlockState.Complete:
      return 'complete';
    case DeferBlockState.Loading:
      return 'loading';
    case DeferBlockState.Placeholder:
      return 'placeholder';
    case DeferBlockState.Error:
      return 'error';
    case DeferBlockInternalState.Initial:
      return 'initial';
    default:
      throw new Error(`Unrecognized state ${state}`);
  }
}

/**
 * Infers the hydration state of a specific defer block.