Go Source:

package main

import (
	"fmt"
	"net/http"
	gotown "github.com/maxmcd/go-town"
)

func main() {
	gotown.ListenAndServe(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprintf(w, "Hello World")
	}))
}

Built with:

 deno run --allow-net --allow-run --allow-read \
    "https://esm.town/v/maxm/compileAndUploadTinygoWasm?v=58"