Allow HiddenAttribute to decorate classes

[SeeminglyScience]

Summary of the new feature / enhancement

And exclude decorated classes from type name completion

Proposed technical implementation details (optional)

No response

[SeeminglyScience]

The Engine WG discussed this (as part of the discussion for #13465) and agree that it would be useful

[iSazonov]

/cc @MartinGC94

[SeeminglyScience]

(wouldn't be mad at throwing in #18642 while we're at it)

[MartinGC94]

The hidden keyword is used for class members. Wouldn't it feel more natural to extend its usage to class definitions as well? So the syntax would look like this: hidden class MyClass {}.
The same goes for the other request for functions where the keyword would allow you to leave out a param block in the function definition.

[SeeminglyScience]

For this particular issue the use case is primarily for classes written in C# so the keyword wouldn't necessarily be applicable.

For functions/variables/etc keep in mind we'd have to make hidden a keyword outside of classes. I don't think the benefit is worth the potential breaks (functions named hidden for example). But allowing HiddenAttribute to decorate classes doesn't exclude the possibility of adding a hidden keyword in the future, and the implementation would likely be simply decorating with the attribute anyway.

[microsoft-github-policy-service]

This issue has not had any activity in 6 months, if this is a bug please try to reproduce on the latest version of PowerShell and reopen a new issue and reference this issue if this is still a blocker for you.

[microsoft-github-policy-service]

This issue has not had any activity in 6 months, if this is a bug please try to reproduce on the latest version of PowerShell and reopen a new issue and reference this issue if this is still a blocker for you.

[microsoft-github-policy-service]

This issue has not had any activity in 6 months, if this is a bug please try to reproduce on the latest version of PowerShell and reopen a new issue and reference this issue if this is still a blocker for you.

[microsoft-github-policy-service]

This issue has been marked as "No Activity" as there has been no activity for 6 months. It has been closed for housekeeping purposes.