CDK: Uploading files to S3 bucket

import s3deploy = require('@aws-cdk/aws-s3-deployment');

const appBucket = new s3.Bucket(this, 'assets');

new s3deploy.BucketDeployment(this, 'DeployFiles', {
  sources: [s3deploy.Source.asset('./assets')],
  destinationBucket: appBucket,
});
new cdk.CfnOutput(this, 'AppBucket', {
  value: appBucket.bucketName
});