Function updateCallComponent

code/styling/public/app.js:10175–10201

(current, workInProgress, renderExpirationTime)

  }

  function updateCallComponent(current, workInProgress, renderExpirationTime) {
    var nextProps = workInProgress.pendingProps;
    if (hasLegacyContextChanged()) {
      // Normally we can bail out on props equality but if context has changed
      // we don't do the bailout and we have to reuse existing props instead.
    } else if (workInProgress.memoizedProps === nextProps) {
      nextProps = workInProgress.memoizedProps;
      // TODO: When bailing out, we might need to return the stateNode instead
      // of the child. To check it for work.
      // return bailoutOnAlreadyFinishedWork(current, workInProgress);
    }

    var nextChildren = nextProps.children;

    // The following is a fork of reconcileChildrenAtExpirationTime but using
    // stateNode to store the child.
    if (current === null) {
      workInProgress.stateNode = mountChildFibers(workInProgress, workInProgress.stateNode, nextChildren, renderExpirationTime);
    } else {
      workInProgress.stateNode = reconcileChildFibers(workInProgress, current.stateNode, nextChildren, renderExpirationTime);
    }

    memoizeProps(workInProgress, nextProps);
    // This doesn't take arbitrary time so we could synchronously just begin
    // eagerly do the work of workInProgress.child as an optimization.
    return workInProgress.stateNode;
  }

  function updatePortalComponent(current, workInProgress, renderExpirationTime) {
    pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo);