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.
if (expirationTime === Sync) {
    performSyncWork();
  } else {
    scheduleCallbackWithExpirationTime(root, expirationTime);
  }
}
function addRootToSchedule(root: FiberRoot, expirationTime: ExpirationTime) {
  
  
  if (root.nextScheduledRoot === null) {
    
    root.expirationTime = expirationTime;
    if (lastScheduledRoot === null) {
      firstScheduledRoot = lastScheduledRoot = root;
      root.nextScheduledRoot = root;
    } else {
      lastScheduledRoot.nextScheduledRoot = root;
      lastScheduledRoot = root;
      lastScheduledRoot.nextScheduledRoot = firstScheduledRoot;
    }
  } else {
    
    const remainingExpirationTime = root.expirationTime;
    if (
      remainingExpirationTime === NoWork ||
      expirationTime < remainingExpirationTime
    ) {
      
      root.expirationTime = expirationTime;
    }