I was trying to compile my internal data and encounter "what's the right way to represent string in Webassembly" so that's why I came up with the demand for tutorial from a toy language because it has less features to worry about.

I don't understand why I got downvoted, it seems HN users with power to downvote just see everything is a nail they wanted to exercise their power.

Anyway, I'd probably write one when I actually implement it. I know linear memory is available but not sure whether or not having GC or mechanism that make memory safe.