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kotlinlang

Is there any way to mark `CharSequence` as being stable? I'm using it as a way to pass around either `String` or `AnnotatedString`.

I don’t think that would work since a `StringBuilder` is a `CharSequence` for instance but changes are not observable

True, but in my use cases I'm always limiting it to a `String` or `AnnotatedString`

You could wrap it in a stable holder class

I tried that but it made the API not as great + I would've had to spread it out over a bunch of libraries. 

I ended up going with overloads of all my generic composable that deal with text, which isn't great either, but at least the API is nicer

Ah yes if this is for a public api, tricking the compiler into treating CharSequence as would be especially bad because you couldn’t prevent consumers from passing in non-stable objects.  

I'd say it's more of an "internal" API. We also check the CharSequence to make sure that it's a String or AnnotatedString and throw otherwise.