We may have made a mistake in our output exports.. we went with object exports to make things more organized like this:

export const userPoolExports = {
  id: userPool.id,
  arn: userPool.arn,
  urn: userPool.urn,
  groups: {
    customers: {
      id: customersGroup.id,
      urn: customersGroup.urn,
      name: customersGroup.name,
    },
    employees: {
      id: employeesGroup.id,
      urn: employeesGroup.urn,
      name: employeesGroup.name,
    },
  },
  clients: {
    web: {
      id: userPoolWebClient.id,
      urn: userPoolWebClient.urn,
      name: userPoolWebClient.name,
    },
  },
};

However, it doesn't seem like we can do this:

const bootstrapStackRef = new pulumi.StackReference(
  `us/bootstrap/production`
);

const userPoolId = bootstrapStackRef.getOutput('userPoolExports.id');

This results in

userPoolId

being

undefined

Are we doing it wrong?

I think you should be able to do

getOutput('userPoolExports').id

directly, without the apply. You only need the apply if you're processing the data

Oh! I'll give that a try!

That's a limitation of getOutput (unsure why it's not generic). At runtime, it'll work

Oh! That's good to know. Couple of workable options here.

I've found a type annotation for stackref outputs helpful -

getOutput('foo') as pulumi.Output<typeof 'foo'>

I tend to avoid casting, but maybe that's the best way in this case?

Casting would be the way to go