Tinygo is neat, but the one time I tried to use it in practice, it failed me. The following program will panic when compiled to wasm:

  package main  
  import "encoding/json"  
  func main() {  
          var parsed interface{}  
          json.Unmarshal([]byte(`{"test":42}`), &parsed)  
  }

(It's been a while, so I forgot the problem with it was.)

I'm curious what kind of text parsing you do. I ended up rolling with valyala/fastjson, but that's very much not what I was imagining. Lots of existing libraries don't work either, and finding out what does and what doesn't is pain. Is there some trick to working with it?