getSession in amazon-cognito-identity-js returning undefined sporadically

Describe the bug We’re using cognitoUser.getSession to check whether a user is logged in but we’ve noticed that it occasionally returns undefined. The user then gets kicked out to our login screen but if we refresh the page without entering credentials they’re still logged in.

To Reproduce Steps to reproduce the behavior: We haven’t found a way to reproduce the issue as it happens randomly.

Expected behavior Call cognitoUser.getSession and it returns either null or the session object if a user is signed in.

Desktop (please complete the following information):

• OS: OSX Mojave 10.14.5
• Browser: Chrome
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: iPhone XS Max
• OS: iOS 12
• Browser: Chrome
• Version: latest

Sample code

const isSessionValid = (cognitoUser) => {
  return cognitoUser.getSession((err, session) => {
    if (err) {
      CustomError(err);
      return false;
    }

    // Return whether the session is valid
    if (session.isValid()) {
      return true;
    }

    return false;
  });
}

export const isAuthenticated = () => {
  // Get the current user
  const cognitoUser = userPool.getCurrentUser();

  // Check there is an actual user object
  if (!cognitoUser) return false;

  // Get the current session
  return isSessionValid(cognitoUser);
};

[pl-synth]

amazon-cognito-identity-js => v3.0.14

Getting same thing, am able to reproduce it on our app. getSession is returning undefined. This happens only on very first load, once every 30 min. Reloading helps. Workaround is to call it again, not ideal ofc! There’re no errors or anything, just undefined.

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