Errors with Webpack

[mjc-gh]

For some reason this module isn't working with Webpack. When I try to use the module I get the following errors. Any ideas?

ERROR in ./~/flexible-dnd/lib/store/dragDropReducer.js
Module not found: Error: Cannot resolve 'file' or 'directory' ../constants/constants in /home/user/demo-project/node_modules/flexible-dnd/lib/store
 @ ./~/flexible-dnd/lib/store/dragDropReducer.js 9:17-50

ERROR in ./~/flexible-dnd/lib/store/actionCreators.js
Module not found: Error: Cannot resolve 'file' or 'directory' ../constants/constants in /home/user/demo-project/node_modules/flexible-dnd/lib/store
 @ ./~/flexible-dnd/lib/store/actionCreators.js 8:17-50

[shabegger]

I'm betting it's because the constants file is a JSON file. What if you try using json-loader or something similar?