I thought I'd come up with something really clever to help type props when doing transforms:

export function isTransformType<T extends new (...args: any[]) => CustomResource>(args: ResourceTransformArgs, resource: T): args is TypedResourceTransformArgs<ConstructorParameters<T>[2]> {
  return '__pulumiType' in resource && args.type === resource.__pulumiType
}

but of course,

__pulumiType

is marked as

@internal

so it doesn't work. Is there a way to get the actual pulumi type from an arbitrary resource class, or do I have to pass the type string myself like a scrub?

Yeh we should just expose type (and name for that matter) on the base resource type. I think we could then ensure it's also filled in for remote resource references (for example transforms running on resources defined by a remote component)

Would love to see that.

transforms

doesn't even pass the resource instance either so you can't do anything clever with the

.is()

sad panda (Went to upvote the issue - apparently I already had heh)

Transforms does tell you the type token though https://www.pulumi.com/docs/reference/pkg/nodejs/pulumi/pulumi/interfaces/ResourceTransformArgs.html

It does, but you have to hardcode the comparison it to the type you want - you can't check if it matches the

__pulumiType

of a class (well you can, it works at runtime, but doesn't work for type-checking)

Ah right yeh, yeh we should just expose type tokens on resources. And static type tokens for the known resource types.

Yeah, that's what I was lamenting 😁

If you look at the import section in the docs it happens to have the type token: https://www.pulumi.com/registry/packages/aws/api-docs/acm/certificate/#import

pulumi import aws:acm/certificate:Certificate cert arn:aws:acm:eu-central-1:123456789012:certificate/7e7a28d2-163f-4b8f-b9cd-822f96c08d6a
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ooh that works, nice one, thanks