WebAssembly.Module

var worker = new Worker("wasm_worker.js");

WebAssembly.compileStreaming(fetch("simple.wasm")).then((mod) =>
  worker.postMessage(mod),
);

var importObject = {
  imports: {
    imported_func: function (arg) {
      console.log(arg);
    },
  },
};

onmessage = function (e) {
  console.log("module received from main thread");
  var mod = e.data;

  WebAssembly.instantiate(mod, importObject).then(function (instance) {
    instance.exports.exported_func();
  });
};