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aws.getAutoscalingGroups

returns a Promise, you don't need to wrap that in an output. Just use

.then()

on it.

oh, interesting thought. thank you. i started with the example in the docs which did that but perhaps things have simplified since then. https://www.pulumi.com/docs/reference/pkg/aws/getautoscalinggroups/

pulumi.output

does handle promises, but you have to resolve it with an

apply

(like

.then()

for Outputs)

Related question: is there a benefit of wrapping the Promise with an Output in this case? The only one I can think of is that it allows a simple

pulumi.all

refer to the results, alongside lots of other outputs...

You can use Promises directly in the

all

, so it’s not necessary in this case. For example:

const foo = new Promise(resolve => resolve("foo"))
export const fooValue = pulumi.all([foo]).apply(([v]) => v)

results in

Outputs:
    fooValue: "foo"

Nice.

Interesting. Clearly I did not well grasp

pulumi.output

&

.apply()

. I may experiment with this more. Thank you. Seems to accomplish my stated example, I would probably need to stack the behavior as so: 1. preview and bulid ASGs in a way that I need a promise. 2. resolve the promise to query AWS for the ASGs. i know that shouldn't be necessary but this is for testing behavior for a much larger project. 3. resolve the promise from #2 to begin building resources as a consequence of the returned ASG list.