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# typescripts
sparse-intern-71089
05/17/2022, 3:53 AMThis message was deleted.
l
little-cartoon-10569
05/17/2022, 4:03 AMThis is happening because you're creating your JSON object at runtime, but the
someBucket.bucketlittle-cartoon-10569
05/17/2022, 4:04 AMThe minimal change to fix this is to move the JSON.stringify inside the apply(), so that the value returned from apply() is directly assigned to
policylittle-cartoon-10569
05/17/2022, 4:05 AMHowever, this is a very common problem and Pulumi have created a very elegant solution for this case of creating policy documents.
little-cartoon-10569
05/17/2022, 4:05 AMInstead of creating the JSON string, create an object of type aws.iam.PolicyDocument. This will get turned into JSON later, by Pulumi, magically.
little-cartoon-10569
05/17/2022, 4:06 AMThe properties of PolicyDocument (like the Resource array) can handle Output values. This is so much easier than creating a JSON object, which can't handle Output values.
little-cartoon-10569
05/17/2022, 4:07 AMSince Typescript knows about Pulumi's types, all you have to do is get rid of
JSON.stringify()🎉 1
🙌 1
p
polite-king-94596
05/18/2022, 5:10 PMthanks 🙂
polite-king-94596
05/18/2022, 5:11 PMis there any more documentation (beyond https://www.pulumi.com/docs/intro/concepts/inputs-outputs/) for this? I'm still confused by the workings by what can/cannot be used as resource arguments
l
little-cartoon-10569
05/18/2022, 8:37 PMProbably, but it's not easy to find.. we need more! (And I know that at you're not the only one looking for this sort of doc, it's come up in conversation a few times recently). I had a quick look in https://www.pulumi.com/blog/, https://github.com/pulumiverse/awesome-pulumi and https://github.com/pulumi/pulumi/discussions but nothing jumped out at me. There's definitely a load of threads here in #C84L4E3N1 and #CJ909TL6P that answer specific questions. I'd be up for writing (or co-writing) something on topic, though specific to TS.
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