Bryntum Support Forums

See https://bryntum.com/products/gantt/docs/api/Core/widget/MenuItem#eventhandler-onItem
I'm not sure why the argument is of type 'object' when you clearly knows what data is passed, as it is described in the documentation. I believe 'checked' should be marked "optional".

We are refactoring our gantt implementation and trying to get rid of all our hacks to make this thing work. I now stumble upon all the typescripts bugs and shortcomings again.

Thanks for your report. Here is the ticket to track progress https://github.com/bryntum/support/issues/11832