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&gt; To be able to use it to create a Kubernetes ConfigMap, I need to have an OutputState
This should not be the case. You should be able to use an Output as an input to a ConfigMap. In general, you shouldn’t need to work with OutputState directly unless you are building your own new kinds of Outputs. 

Could you share the ConfigMap code perhaps?

Alright, thanks for your answer! After reading through the documentation of `ApplyT`, I understod that you can just cast the return value to a corresponding “registered” type. In my case i was returning a `pulumi.StringMap`, which apearantly doesn’t have a `pulumi.StringMapOutput` registered as its output type. If I return a `map[string]string` however, I’m able to cast the return value to a `pulumi.StringMapOutput` which `kubernetes.ConfigMapArgs` accepts. Is there any list of types with registered output types?

StringMapOutput should be registered as an output type <https://github.com/pulumi/pulumi/blob/2351fc66cfe9b902aecc38718f2c70eaeb5372d4/sdk/go/pulumi/types_builtins.go#L7109>

You should never need to return a "pulumi type" from within an apply. Returning the raw value (string, int, or in this case map) is the way to go.