I can't quite figure out how to use the profiling build. I aliased `react-dom` to `react-dom/profiling` but I get this error:

<img width="448" alt="screen shot 2018-09-08 at 20 17 02" src="https://user-images.githubusercontent.com/810438/45257816-2d405780-b3a4-11e8-9615-0b27abd0442b.png">
<img width="272" alt="screen shot 2018-09-08 at 20 17 06" src="https://user-images.githubusercontent.com/810438/45257817-2d405780-b3a4-11e8-8a08-f5a0650debfe.png">

I didn't want interactions, I just want profiling. What am I doing wrong?

To repro, use CRA, then eject, then add `react-dom` -> `react-dom/profiling` to alias in webpack prod config and build.
: updateExpirationTimeBeforeCommit;
  markCommittedPriorityLevels(root, earliestRemainingTimeBeforeCommit);
  let prevInteractions: Set<Interaction> = (null: any);
  let committedInteractions: Array<Interaction> = enableSchedulerTracking
    ? []
    : (null: any);
  if (enableSchedulerTracking) {
    
    
    prevInteractions = __interactionsRef.current;
    __interactionsRef.current = root.memoizedInteractions;
    
    
    
    
    
    
    
    
    root.pendingInteractionMap.forEach(
      (scheduledInteractions, scheduledExpirationTime) => {
        if (scheduledExpirationTime <= committedExpirationTime) {
          committedInteractions.push(...Array.from(scheduledInteractions));
          root.pendingInteractionMap.delete(scheduledExpirationTime);
        }
      },
    );
  }
   Reset this to null before calling lifecycles
  ReactCurrentOwner.current = null;