Bad Requests / Config when testing multiple accounts and aws-sdk

[aheld]

I'm using this along with the aws-sdk and notice some errors related to the way aws-sdk uses localstorage.

using code like

let credentials = new AWS.CognitoIdentityCredentials({
    IdentityPoolId: Config.IdentityPoolId,
    Logins: {
      ['cognito-idp.' + Config.Region + '.amazonaws.com/' + Config.UserPoolId]: 
               that.$store.state.cognito.user.tokens.IdToken
    }
  })
  AWS.config = new AWS.Config({
     credentials: credentials, region: 'us-east-1'
  })
  let s3 = new AWS.S3()

when I login as a new user the global AWS config sometimes picks up the previous users ID with the current users IdToken.

Easily solved by calling localStorage.clear() before logging in with a different ID.

This may not be a concern of this library, but I wanted to make a note in case others experienced the issue. It only comes up in testing when we rapidly test multiple accounts using automation.