Debugging lambda locally using cdk not sam

You can use SAM and CDK together as described here. In particular:

1. Run your AWS CDK app and create a AWS CloudFormation template

   cdk synth --no-staging > template.yaml

2. Find the logical ID for your Lambda function in template.yaml. It will look like MyFunction12345678, where 12345678 represents an 8-character unique ID that the AWS CDK generates for all resources. The line right after it should look like: Type: AWS::Lambda::Function

3. Run the function by executing:

   sam local invoke MyFunction12345678 --no-event