Hi, I asked this is Azure channel, but I think this is basically the usage of

Output

The error is in

azure-native

, which I can't change the source code, but the type is For type like 

*readonly* identity: pulumi.Output<outputs.web.ManagedServiceIdentityResponse | undefined>;

How do I put them into another 

Input

 type? I would get

Type 'Output<string | undefined>' is not assignable to type 'Input<string>'.
  Type 'OutputInstance<string | undefined>' is not assignable to type 'Input<string>'.
    Type 'OutputInstance<string | undefined>' is not assignable to type 'OutputInstance<string>'.
      Type 'string | undefined' is not assignable to type 'string'.
        Type 'undefined' is not assignable to type 'string'.ts(2322)

You need to handle the undefined case,

identity.apply((id : outputs.web.ManagedServiceIdentityResponse | undefined) => /* return a string here */)

. The most simple thing is you could just tell the compiler to ignore the undefined case and just return

id!

thank you sir