example_stack.yml

AWSTemplateFormatVersion: '2010-09-09'
Transform: "AWS::Serverless-2016-10-31"
Description: ExampleStack - v.1

Parameters:
  DynamoTableName:
    Type: "String"

ExampleLambdaFunction:
    Type: AWS::Lambda::Function
    Properties: 
      Code: 
        ZipFile: |
          exports.handler = async (event) => {
              console.log("Hello World.")
              console.log("DYNAMODBTABLENAME", process.env.DYNAMODBTABLENAME);
              return "Hello World"
          };
      Handler: index.handler
      MemorySize: 128
      Runtime: nodejs12.x
      Timeout: 5
      Environment:
        Variables:
          DYNAMODBTABLENAME: !Ref DynamoTableName