require('../targets/wasm_exec.js'); var callback; global.setCallback = (cb) => { callback = cb; }; global.callCallback = () => { console.log('calling callback!'); let result = callback(1, 2, 3, 4); console.log('result from callback:', result); }; let go = new Go(); WebAssembly.instantiate(fs.readFileSync(process.argv[2]), go.importObject).then((result) => { go.run(result.instance); }).catch((err) => { console.error(err); process.exit(1); });