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Hey yall. I'm having an issue where I'm doing `SomeOutput.apply(() =&gt; throw Error()` but the error isn't really bubbling up and stopping Pulumi, causing it to hang since other resources use the created output from this call. How can I ensure Pulumi stops on this error? Does the output need to be provided as an output of the Pulumi script?

You should throw a ResourceError. Also you need to be aware that it won't be thrown until dependencies are being resolved, after all your other code has completed.

is the "don't throw regular `Error`, throw `pulumi.ResourceError` " documented anywhere?

No, I can't find anything in the normal docs.
The SDK docs for RunError and ResourceError imply it:
<https://www.pulumi.com/docs/reference/pkg/nodejs/pulumi/pulumi/classes/RunError.html>
<https://www.pulumi.com/docs/reference/pkg/nodejs/pulumi/pulumi/classes/ResourceError.html>