wasm-loader.js

module.exports = function loadWASMBundle(bundle) {
  return fetch(bundle)
    .then(function (res) {
      if (WebAssembly.instantiateStreaming) {
        return WebAssembly.instantiateStreaming(res);
      } else {
        return res.arrayBuffer()
          .then(function (data) {
            return WebAssembly.instantiate(data);
          });
      }
    })
    .then(function (wasmModule) {
      return wasmModule.instance.exports;
    });
};