const bytes = new Uint8Array([
  0,97,115,109,1,0,0,0,1,7,1,96,2,
  127,127,1,127,2,1,0,3,2,1,0,4,1,
  0,5,1,0,6,1,0,7,7,1,3,97,100,100,
  0,0,9,1,0,10,10,1,8,0,32,0,32,1,
  106,15,11,11,1,0,
]);
interface WebAssemblyExports {
  add(a: number, b: number): number;
}
const exports = await WebAssembly.instantiate(bytes);
const functions = exports.instance.exports as unknown as WebAssemblyExports;
console.log(functions.add(1, 2)); // 3