Repository from exanubes.com for Create API Gateway with custom domain.
Run the following commands for deploying and destroying the stacks
npm run cdk:deploy
npm run cdk:destroy
Both of these commands use the aws-cli sts service to get the account id and aws IAM role exanubes-cloudformation-access in order to dynamically provide role arn. Make sure you're using the account you want to deploy the stacks to and that you have the role created either with the same name or different name and change the scripts in package.json.
These commands use sam-beta-cdk CLI, you can install it with:
brew install aws-sam-cli-beta-cdk