Mutation request that ends in Validation Error doesn't float error message to Promise's catch handler.

I have the following client code running in the browser:

client.hydrated().then(function handleClientHydrated(client) {
      client.mutate({
        mutation: createStuff,
        variables: {
          listOfStuff: listOfStuff,
        },
      }).then(function handleMutationSuccess(data) {
        console.log(arguments);
        if (!data.listOfStuff) {
          throw new Error(`Server returned 200, but there was a validation error--and I can't see the error passed from the server via npm's require('aws-appsync').default module`);
        }
      }).catch(function handleMutationFailure() { // This never gets called.
        console.error('failure',arguments);
      });
    });

In the network pane, it looks like AWS AppSync returns Status Code 200 and a nice object with juicy error information.

Should that error information be passed to the success callback? How about the error callback? Should the error callback get called?

[ArronHsiao]

I can use mutate function to successfully create new table, but can’t receive result back, something like

client.mutate({ mutation: mutations.createUser, variables: { … } }) .then(function logData(data) { console.log('results of mutation: ', data.data); }

just got

results of mutation: { createUser: null }

but the table creation is success

[elorzafe]

We have fixed this on the latest release (aws-appsync@1.4.0) I will close the issue for now, but feel free to create a new issue if this problem persist.