Npm start to develop on local server didn't work

I made a quick check and the reason seems to be the latest [email protected] I don't have time to investigate so I'll just freeze the currently used version

Weird, never seen that before. It might be some dev dependency change in some minor release. Try to reinstall node_modules with exact dependency versions

I'm having issues following the dev setup:

Uncaught TypeError: Cannot read property 'key' of undefined
    at eval (keymaster.js?c3d1:274)
    at eval (keymaster.js?c3d1:296)
    at Object../node_modules/keymaster/keymaster.js (grapes.min.js:335)
    at __webpack_require__ (grapes.min.js:30)
    at Object.eval (index.js?e835:38)
    at eval (index.js:236)
    at Object../src/keymaps/index.js (grapes.min.js:2204)
    at __webpack_require__ (grapes.min.js:30)
    at eval (Editor.js?c6c5:11)
    at Object../src/editor/model/Editor.js (grapes.min.js:2168)

Maybe a bundler issue?

I am able to drop the min from grapes.min.js in the index.html file and it works. However, if I build the grapes.js output, then this error returns.