Lexical Grammar

[nateemerson]

As a baseline, we should come up with a lexical context-free grammar for #GruLang (thank you to Reddit user fracturedpersona for the original feature request).

Initially, I'd like to base this off of a subset of the the JS+TS grammars. I'll start minimal and build up to what I think is a reasonable degree...and as we all know all class related constructs will be left on the side of the road judiciously and aggressively.

First pass can be a bunch of TS types for reference...will figure out how to implement into lexer after.

Resources:

• Conceptual Intro/Overview on MDN
• ECMA-262 (Javascript 2022 standard) Appendix A: "Grammar Summary"
• Typescript Language Specification Appendix A: "Grammar"