spawn-error-logging-no-return.js

const fromSpawn = spawn(function *() {
  let someVal;
  
  try {
    //reject a promise
    someVal = yield new Promise((res, rej) => {
      setTimeout(rej.bind(null, 'whatevs!!!'), 1000);
    });
  } catch (err) {
    console.error('Inside spawn error', err);
  }
  
  //don't return anything
  console.log('End of spawn', someVal);
});

fromSpawn.then((data) => {
  console.log('Data from spawn', data);
}).catch((err) => {
  console.error('Err from spawn', err);
});