Await rejected promise

async.await.reject.promise.js

var foo = async function () { 
  try {  
    await Promise.reject('error in promise');
  } catch (e) {
    console.log('caught error:', e);
  }
};

foo().then(
  result => console.log('success-', result), 
  error =>  console.log('error handler-', error)
);

/* Output */
// caught error: error in promise
// success- undefined

var boo = async function () {  
   await Promise.reject('error in promise');
};

boo().then(
  result => console.log('success-', result), 
  error =>  console.log('error handler-', error)
); 
/* Output */
// error handler- error in promise