import * as cdk from "@aws-cdk/core";
import * as ec2 from "@aws-cdk/aws-ec2";
import * as rds from "@aws-cdk/aws-rds";

import * as sst from "@serverless-stack/resources";

class MySampleStack extends sst.Stack {
  constructor(scope, id, props) {
    super(scope, id, props);

    // Create a VPC
    const vpc = new ec2.Vpc(this, "Vpc", {
      natGateways: 1,
    });

    // Create RDS
    const instance = new rds.DatabaseInstance(this, 'Instance', {
      engine: rds.DatabaseInstanceEngine.mysql({
        version: rds.MysqlEngineVersion.VER_8_0_19,
      }),
      instanceType: ec2.InstanceType.of(ec2.InstanceClass.BURSTABLE3, ec2.InstanceSize.SMALL),
      defaultDatabaseName: 'default',
      vpc,
      vpcSubnets: {
        subnetType: ec2.SubnetType.PRIVATE
      }
    });

    new cdk.CfnOutput(this, "DBAddress", {
      value: instance.instanceEndpoint.socketAddress,
    });
  }
}

export default class Stack extends sst.Stack {
  constructor(scope: <http://sst.App|sst.App>, id: string, props?: sst.StackProps) {
    super(scope, id, props)

    const vpc = new ec2.Vpc(this, "nori")
    const cluster = new rds.ServerlessCluster(this, "Postgres", {
      vpc,
      engine: rds.DatabaseClusterEngine.AURORA_POSTGRESQL,
      defaultDatabaseName: "nori",
    })
}

lib/stack.ts:59:47 - error TS2345: Argument of type 'this' is not assignable to parameter of type 'Construct'.
  Type 'Stack' is not assignable to type 'Construct'.
    Property 'onValidate' is protected but type 'Construct' is not a class derived from 'Construct'.

59     const cluster = new rds.ServerlessCluster(this, "Postgres", {
                                                 ~~~~