I implemented it for ANTLR (which is LL(*), so not fully recursive descent, but top-down) but never got around to shepherding the patches through. https://gith

I implemented it for ANTLR (which is LL(*), so not fully recursive descent, but top-down) but never got around to shepherding the patches through. https://github.com/dberlin/antlr4ts/blob/incremental/IncrementalParsing.md https://github.com/dberlin/antlr4ts/blob/incremental/Increme... is an intro. The commits on that branch should give you some idea. I have regular non-TS ANTLR4 support somewhere too. I'm happy to chat about it elsewhere as well, drop me a line at my email.