Cognito User Pool - "Enable case insensitivity for username input"

[realharry]

Cognito User Pool currently has an option called "Enable case insensitivity for username input". I couldn't find any corresponding attribute in CDK: https://docs.aws.amazon.com/cdk/api/latest/docs/@aws-cdk_aws-cognito.UserPool.html

Use Case

One of the most annoying things of Cognito is that once you create a stack, you cannot change much of its settings. For me, that's where CDK becomes very useful (even compared to CF) because it's a lot easier to create/destroy and experiment with various stacks with CDK. We are in the process of recreating a few User Pools, and it'll be nice if we could just use CDK.

Proposed Solution

I'm not entirely sure where this option really belongs to, but SignInAliases might be a good place to start looking into: https://docs.aws.amazon.com/cdk/api/latest/docs/@aws-cdk_aws-cognito.SignInAliases.html

Other

Cognito is one of the most difficult services to use in AWS. I hope the Cognito team does realize this, and make some further improvements. But, that's probably for another time. For now, I hope we can use CDK to alleviate some pain points. Thanks.

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

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This is a 🚀 Feature Request