text: const createBuffer = (() => {
    // See https://github.com/whatwg/html/issues/5380 for why not `new SharedArrayBuffer()`
    const sabConstructor = new WebAssembly.Memory({ shared:true, initial:0, maximum:0 }).buffer.constructor;
    return (type, length) => {
      if (type === "ArrayBuffer") {
        return new ArrayBuffer(length);
      } else if (type === "SharedArrayBuffer") {
        return new sabConstructor(length);
      } else {
        throw new Error("type has to be ArrayBuffer or SharedArrayBuffer");
      }
    }
  })();
  