Feature request: allow #[ts(optional)] on any type

[tguichaoua]

Is your feature request related to a problem? Please describe.
I have a macro that generates a struct with ::core::option::Option<_> (due to macro hygiene), and because of that, I cannot use ts(optional) on it.
Also in a more general way, I want to being able to mark a field as optional without having to use the Option type.

Describe the solution you'd like
Being able to mark a field as optional, whatever its type.

Describe alternatives you've considered
My current workaround for the ::core::option::Option<_> problem is to use ts(optional, as = "Option<_>") which isn't perfect.

[gustavo-shigueo]

It is by design that #[ts(optional)] only works with Option, this has been discussed at length in the past, check out #175.

However, it is a bug that it does not work with a fully specified core::option::Option, this will be solved by #366, which changes how a type is verified to be an Option

[gustavo-shigueo]

While your particular problem will be fixed by #366, the feature you ask for will not be implemented,

I will close this issue and open a new one pointing to the fact that Option is vulnerable to type aliasing or otherwise spelling this type as anything other than Option, like fully qualifying it.