createResource swallows error?

I noticed errors get swallowed when I use createResource. Here is some simplified example code:

window.addEventListener('unhandledrejection', (e) => console.error(e));
window.addEventListener('error', (e) => console.error(e));

function getCurrentUserResource() {
  const [userData] =
    createResource<any>(
      async () => {
        console.log('hello!') // logs
        throw 'error'; // swallowed
      }
    );
  return userData;
}

getCurrentUserResource();

window.addEventListener('unhandledrejection', (e) => console.error(e));
window.addEventListener('error', (e) => console.error(e));

function getCurrentUserResource() {
  const [userData] =
    createResource<any>(
      async () => {
        console.log('hello!') // logs
        throw 'error'; // swallowed
      }
    );
  return userData;
}

getCurrentUserResource();

The error is not logged in the console

9 Replies

lxsmnsyc•2y ago

it is caught by the nearest error boundary

MathieuOP•2y ago

I attached those event listeners before the call:

window.addEventListener('unhandledrejection', (e) => handleErrorEvent(e));
window.addEventListener('error', (e) => handleErrorEvent(e));

window.addEventListener('unhandledrejection', (e) => handleErrorEvent(e));
window.addEventListener('error', (e) => handleErrorEvent(e));

If the promise rejection is unhandled, it should call 'unhandledrejection' afaik but it doesn't.

lxsmnsyc•2y ago

no I meant literally an ErrorBoundary

MathieuOP•2y ago

actually the app didnt render yet at this place hm. but why would that matter @lxsmnsyc in any case I dont see why the error would be swallowed if I have the 'unhandledrejection' handler.

lxsmnsyc•2y ago

well you didn't say where the createResource was constructed 🤷‍♂️

MathieuOP•2y ago

but does it matter as long as I have a 'unhandledrejection' handler?

high1•2y ago

createResource handles errors itself

high1•2y ago

high1•2y ago

the signal will have error set on error 😄 resource return

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createResource swallows error?