How to share same interface between different namespaces?

[artsiommiksiuk]

I'm have an interface Self.

I have public and private APIs. I want to generate two openapi documents respectively (public and private). All examples showing interface defined directly in namespace.

I thought about aliasing them into namespaces, but it didn't work, namespaces left empty.
There's is operator for models and separate operations, but there's no for interfaces.

So, more generalized, if I have an interface A defined outside the namespace, how to bring A into namespace N1 and N2?

[timotheeguerin]

You can use interface extends to redefine interfaces, but this has to be done per interface, there is no way to include a set of operation from somewhere else right now.

Playground for example

[artsiommiksiuk]

That's a bummer. Thanks for the hint, though.

Shall I create a feature request then?

[artsiommiksiuk]

Seems like not really an option, as extends doesn't carry over interface decorators, like @route or @useAuth.
I think interfaces then missing at least is operation implementation, or some feature which allows inclusion into namespaces.

https://typespec.io/playground/?c=aW1wb3J0ICJAdHlwZXNwZWMvaHR0cCI7Cgp1c2luZyBIdHRwOwoKQHNlcnZpY2UKbmFtZXNwYWNlIFPGEkEgewogIGludGVyZsQXQ29tbW9uT3BzIGV4dGVuZHPHEi5NeUNvxxp7fQp93FRC31TaVMpLxiLFSUByb3V0ZSgiL3NvbWUtcGF0aCIpxBd1c2VBdXRoKEJhc2ljxArEFsp2zF0KICAgIHBpbmcoKTogdm9pZDsKICDEcg%3D%3D&e=%40typespec%2Fopenapi3&options=%7B%22linterRuleSet%22%3A%7B%22extends%22%3A%5B%22%40typespec%2Fhttp%2Fall%22%5D%7D%7D

[timotheeguerin]

yeah extends it a bit confusing for interface it should really more be a spread ... syntax for what it does