Yeah it's pretty cool, if I say so myself :) It parses itself (using a pre-compiled AST) to parse other user-defined grammars. Initially I started using PEGjs,

Yeah it's pretty cool, if I say so myself :) It parses itself (using a pre-compiled AST) to parse other user-defined grammars. Initially I started using PEGjs, and then swapped once it was ready.