factorial-wasm-js-glue-code.js

fetch('factorial.wasm')
	//getting WASM Module from response
  .then(response => response.arrayBuffer())
	//instantiating WASM instance from WASM Module
  .then(bytes => WebAssembly.instantiate(bytes)) 
	//using exported factorial fn from WASM Instance
  .then(results => {
    console.log(results.instance.exports.factorial(12))
  })

WebAssembly.instantiateStreaming(fetch("factorial.wasm")).then(results => {
  console.log(results.instance.exports.factorial(12));
});