Question

34

async/await catch rejected Promises

rated 0 times [ 40] [ 6] / answers: 1 / hits: 15261 / 9 Years ago, fri, january 29, 2016, 12:00:00

I'm just getting started with async/await and running into a problem.

I can do as expected:

async function x() {

  let y = await Promise.resolve(42);

  return y;

}

But when I reject a Promise:

async function bad() {

  try {

   await Promise.reject('bad');

  } catch(err) {

    err; //AssertionError: TypeError: (0 , _errorHandler2.default) is not a function

  }

}

How do I catch rejected Promises with async/await?

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willieelisham

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4 Years ago

answered 9 Years ago aidanl · Accepted Answer

What bad; alone is supposed to do? The error is caught as expected, you just don't do anything with it:

async function bad() {

  try {

    await Promise.reject('bad');

  } catch(err) {

    console.log(err);

  }

}



bad();

This outputs bad as expected. Code here.