domachine/io_generator_example.js

## io_generator_example.js
function performingIO(done) {
  console.log('Heay IO ...');
  setTimeout(() => done(42), 1000);
}

function *myGenerator() {
  const a = yield { fn: performingIO };
  return a;
}

const it = myGenerator();
const m = it.next();
m.fn((value) => {
  it.next(value);  // => { value: 42, done: true }
});
	function performingIO(done) {
	console.log('Heay IO ...');
	setTimeout(() => done(42), 1000);
	}

	function *myGenerator() {
	const a = yield { fn: performingIO };
	return a;
	}

	const it = myGenerator();
	const m = it.next();
	m.fn((value) => {
	it.next(value); // => { value: 42, done: true }
	});