Nice to see the custom build feature in Webix 6! Several questions:
The size of the custom build after commenting out most components except Datatable, side menu and a few basic ones (form, toolbar) is only about 25% smaller. Is this expected, as @maksim suggested a few years ago?
What are the instructions to build the minified file? Can you please document them on the page and maybe add the corresponding npm script?
I've noticed that the TypeScript definition file is gone from the Pro bundle (at least in version 6.1.0).