I have simply converted an already existing lambda/cloudformation solution into an easier to use format for aws-cdk users. The actual lambda code is taken from https://github.com/rosberglinhares/CloudFormationCognitoCustomResources
If you want any additional features just open an issue, or better yet a merge request.
Usage
Usage if fairly self explanatory, but if you're unsure then here is an example: The userPool and userPoolClient objects are @aws-cdk/aws-cognito objects that should already be in your stack.
let userPoolClientSettings = new UserPoolClientSettings(
this,
`userPoolClientSettings`,
{
domain: `domain.example.com`,
userPool: userPool,
userPoolClient: userPoolClient,
supportedIdentityProviders: [IdentityProviders.COGNITO],
callbackURLs: [`https://${cloudFront.domainName}`],
logoutURLs: [`https://${cloudFront.domainName}`],
allowedOAuthFlowsUserPoolClient: true,
allowedOAuthFlows: ["code", "implicit"],
allowedOAuthScopes: ["openid", "email", "aws.cognito.signin.user.admin"]
}
);