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kotlinlang

Hello.
Is there best practics for returns platform Type from `expect` function?
For example, `Drawable` for android and `UIImage` for ios?

You need some abstraction for that that wraps both of those types. like `Image` which itself maybe expect declaration, implemented on each platform in a way that exposes platform type

Typealias may work, but you will have no common methods in this case, so it will be a type which may be references, but doesn't have any methods to use from common code. 
Imo real wrapper is more flexible, even of you don't have any common methods yet

Yes, this not for use inside common code, but for some type of declaration of intent.

If we go deeper into this example, imagine what we want to declare some abstract API. Method that receive image ID and returns image resource.

For android it will be
`fun getImageForId(id:Int):Drawable`
For iOS
`fun getImageForId(id:NSString):UIImage`

Of course I can declare those funcs separately, but it will be nice to declare abstract contract for `getImageForId` inside common code.

Both typealias or real wrapper approach will work in this case. You can even abstract image id param 