The Using AWS Lambda with Amazon S3 tutorial done with AWS CDK.

Uses the NodejsFunction to bundle the Lambda code:

• aws-sdk is not included in the bundle
• sharp, which uses native dependencies, is installed in the node_modules folder

• npm run build compile typescript to js
• npm run watch watch for changes and compile
• npm run test perform the jest unit tests
• cdk deploy deploy this stack to your default AWS account/region
• cdk diff compare deployed stack with current state
• cdk synth emits the synthesized CloudFormation template