Exports

Pulumi stack can export values as Stack Outputs to expose values to the user and share values between stacks using Stack References.

In other SDKs you are free to call an export method on the Pulumi Context object whenever you want in a program. Besom's functional design disallows this - since your program is a function, exported keys and values have to be a part of the final Stack value that your main function returns.

To export outputs from your stack use Stack.exports, e.g.:

import besom.*
import besom.api.aws

@main def run = Pulumi.run {
  val bucket = aws.s3.Bucket("my-bucket") 

  Stack.exports(
    bucketUrl = bucket.websiteEndpoint
  )
}

This will export a key bucketUrl with the value of the websiteEndpoint property of the bucket resource.