facebook/react — pull request #980 by benjamn (2014-01-27 21:33:19+00:00)
Title: Remove build/modules/ at beginning of `grunt` and `grunt test`

Little-known fact: instead of writing copies of compiled module files to `build/modules/`, the `bin/jsx-internal` script actually just makes hard links to the master versions of files in the `.module-cache/`, so re-populating `build/modules/` is very inexpensive.

Closes #856.