Define loaders in options about enhanced-require

[sokra]

The enhanced-require module is pretty old... Better use webpack to compile your tests as bundle and run this with mocha...

You can try resolve: { loaders: [...] }...

[bultas]

Thanks for showing me a better direction..

So finally resolved with bundle compiled with webpack + mocha-loader.
For node cli testing I created another webpack config (target: "node") and then run mocha ..
(have to remove style-loader from config, otherwise error with document to write style element doesn't exist)