(???) !/usr/bin/env sh
 (SND) et -x
 (???) p "$(go env GOROOT)/misc/wasm/wasm_exec.js" .
 (???)  GOOS=js GOARCH=wasm go build -ldflags="-s -w" -o gotris.wasm
 (???) OOS=js GOARCH=wasm go build -o gotris.wasm