Log.js:140 Uncaught ReferenceError: exports is not defined     at Log.js:140:1

To reproduce:

1. `make tsweb`
2. http://localhost:8000/ => IDE fails to load
3. F12 to open developer console
4. Console reads:

```
Log.js:140 Uncaught ReferenceError: exports is not defined
    at Log.js:140:1
```

In my environment, this is fixed by https://github.com/sehugg/tss/pull/1