Full CDK course:
https://www.udemy.com/course/aws-type...
Here we learn about marshalling/unmarshalling.
Also this will solve: cannot read properties of undefined in DynamoDB queries
0:00 intro
0:50 solutions presentation
2:26 marshalling with util-dynamodb
4:21 unmarshalling arrays
6:30 marshalling with lib-dynamodb
7:58 conclusions