AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: SAM Layer Version

Resources:
  MyLayer:
    Type: AWS::Serverless::LayerVersion
    Properties:
      LayerName: my-layer
      Description: Shared dependencies
      ContentUri: s3://bucket/layer.zip
      CompatibleRuntimes:
        - nodejs18.x
        - nodejs20.x
      RetentionPolicy: Retain