Source mapping of server code is not working when debugging in Chrome Dev tools

Hello and thanks for this tool, it's a huge time-saver.

I use kyt 0.3.0, node 6.7.0 on MacOS Sierra and I want to debug my server code.

I use the dev command with the inspect flag.

kyt dev -- --inspect

and then i open the Chrome Dev Tools using the url printed in the terminal:

Debugger listening on port 9229.
Warning: This is an experimental feature and could change at any time.
To start debugging, open the following URL in Chrome:
    chrome-devtools://devtools/remote/serve_file/@60cd6e859b9f557d2312f5bf532f6aec5f284980/inspector.html?experiments=true&v8only=true&ws=localhost:9229/node

And it works perfectly except the source mapping for my server code. Only, the node_modules are mapped:

Any ideas ?