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How to catch an error coming from aws cognito pre signup lambda in amplify?

I am using the pre signup lambda trigger in cognito. The pre singup lambda for some cases rasie an exception(desire behaviour). front-end side have the following code:

await Vue.prototype.$auth
          .federatedSignIn({
            provider: provider
          }).then((d) => {
            console.log('success ', d)
          }).catch((e) => {
            console.log('here is and error', e)
          })
      }

When I run the code I always see the success msg ( d is undefined) in the console.log, right after it I see as well the following msg:console log error from amplify I miss to understand how can I catch this error, I guess amplify log it for me, but how can i catch it?

bellow attach my amplify configuration:

import Amplify, { Auth } from 'aws-amplify'

export default {
  install (Vue) {
    Amplify.configure({
      Auth: {
        region: config.auth.region,
        userPoolId: config.auth.cognitoUserPoolId,
        userPoolWebClientId: config.auth.cognitoClientId,
        cookieStorage: {
          domain: config.auth.cognitoCookieStorageDomain,
          secure: config.auth.cognitoCookieStorageSecure
        },
        mandatorySignIn: false,
        authenticationFlowType: 'USER_SRP_AUTH',
        oauth: {
          domain: config.auth.cognitoDomain,
          scope: ['email', 'openid', 'aws.cognito.signin.user.admin'],
          redirectSignIn: config.auth.cognitoSignInRedirectUrl,
          redirectSignOut: config.auth.cognitoSignOutRedirectUrl,
          responseType: 'code' // or 'token', note that REFRESH token will only be generated when the responseType is code
        }
      }
    })
    Vue.prototype.$auth = Auth
  }
Via Active questions tagged javascript - Stack Overflow https://ift.tt/2FdjaAW

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