Right now, someone with own parser/language analyzer (I have built parsers for several SQL dialects) has just Monaco to work with as LSP for CM6 doesn't seem to exist yet.
Will be closely watching CM development.
The LSP integration for Monaco is lackluster, it works, but isn't great. We thought LSP would work perfectly on Monaco only to find out that the Monaco APIs are very different from LSP APIs or even VSCode APIs. The 3rd party package out there is good, but you need a bunch of monkey-patching to make it work in an "IDE" environment.
thanks for releasing codemirror-vim! not having vim capabilities has been one of the longest standing blockers to me using anything web-platform based. i understand there are some vim plugins for various platforms, but great to see some efforts out in the open for codemirror6. https://github.com/replit/codemirror-vim
FWIW I've been toying with ANTLR. I used some of their community's example grammars to get started. Is it weird that grammars generally don't include test harnesses?