miniblog.

Really elegant developer tool: Go's inline IDE feature is used with deprecation markers, so call sites are autofixed from OldApi() to NewApi() based on the implementation of OldApi.

Should code completion offer private methods/fields? If the user chooses a private method, you can offer a quickfix to change its visibility. It's clutter though. I frequently find myself wanting fields that I haven't exposed yet, and frustrated that the IDE hides them.

I think you could build an interesting IDE with a tiny embedded LLM in addition to the usual tooling. Features like 'extract method' would be much nicer if an LLM could provide a name. Choosing a good name is virtually impossible from just a typed AST.