Function renderRootConcurrent

docs/index.js:14255–14364

(root, lanes)

  for (; null !== workInProgress; ) performUnitOfWork(workInProgress);
}
function renderRootConcurrent(root, lanes) {
  var prevExecutionContext = executionContext;
  executionContext |= 2;
  var prevDispatcher = pushDispatcher(),
    prevAsyncDispatcher = pushAsyncDispatcher();
  workInProgressRoot !== root || workInProgressRootRenderLanes !== lanes
    ? ((workInProgressTransitions = null),
      (workInProgressRootRenderTargetTime = now() + 500),
      prepareFreshStack(root, lanes))
    : (workInProgressRootIsPrerendering = checkIfRootIsPrerendering(
        root,
        lanes
      ));
  a: do
    try {
      if (0 !== workInProgressSuspendedReason && null !== workInProgress) {
        lanes = workInProgress;
        var thrownValue = workInProgressThrownValue;
        b: switch (workInProgressSuspendedReason) {
          case 1:
            workInProgressSuspendedReason = 0;
            workInProgressThrownValue = null;
            throwAndUnwindWorkLoop(root, lanes, thrownValue, 1);
            break;
          case 2:
            if (isThenableResolved(thrownValue)) {
              workInProgressSuspendedReason = 0;
              workInProgressThrownValue = null;
              replaySuspendedUnitOfWork(lanes);
              break;
            }
            lanes = function () {
              2 === workInProgressSuspendedReason &&
                workInProgressRoot === root &&
                (workInProgressSuspendedReason = 7);
              ensureRootIsScheduled(root);
            };
            thrownValue.then(lanes, lanes);
            break a;
          case 3:
            workInProgressSuspendedReason = 7;
            break a;
          case 4:
            workInProgressSuspendedReason = 5;
            break a;
          case 7:
            isThenableResolved(thrownValue)
              ? ((workInProgressSuspendedReason = 0),
                (workInProgressThrownValue = null),
                replaySuspendedUnitOfWork(lanes))
              : ((workInProgressSuspendedReason = 0),
                (workInProgressThrownValue = null),
                throwAndUnwindWorkLoop(root, lanes, thrownValue, 7));
            break;
          case 5:
            var resource = null;
            switch (workInProgress.tag) {
              case 26: