UPDATE: Thank you, I think I have enough info to research, appreciate the feedback.

Hypothetically, if I had built a small Go compiler, using Go, to target Web Assembly directly, not using TinyGo but rather just a smaller sub-set of the Go language itself.... Am I breaking any rules and or laws? What are the traps and pitfalls I need to look out for?

I will of course open-source it, just need to figure out which license is the best to use so people can fork it, do what they want and I can keep tinkering on it for my personal use. IF someone wants to use it, cool, just don't come after me because it ate your pizza or something.

Thanks, I'm not a fan of prison food, so I'd rather do this right from the start.