Example on how to use IO.ts

IO_Example.ts

const fetchUser: (id: string) => IO<User> = 
    id => new IO(effects => effects.findById(id));

const notifyUser: (user: User) => IO<void> = 
    id => new IO(effects => effects.notify(user));

const exampleFunc: (id: string) => IO<void> = _do(function* (id) {
  const user: User = yield fetchUser(id);
  yield notifyUser(user);
  log.info('User has been notified')
});