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how do I map from a `(Mutable)StateFlow&lt;T&gt;` to another `(Mutable)StateFlow&lt;T&gt;`? when I call the `map` method I map the `StateFlow&lt;T&gt;` to a `Flow&lt;T&gt;`

It’s still a `MutableStateFlow` , you’ve just lost the type inference. You could cast your resulting `Flow&lt;T&gt;` as a `MutableStateFlow&lt;&gt;`

No, `map` does not return a `StateFlow`, it returns a regular `Flow`. You'd need to use something like `stateIn` to convert it back.

Oh, my mistake. I’ll refrain from answering coroutine questions for a few more weeks haha

I assumed that map just operates on the values after they’re emitting, so the underlying flow could still be a `MutableStateFlow`. But I guess that doesn’t make sense, since the Flow’s value type has changed (it emits a different type to the one it receives)

The reason map can't maintain the `StateFlow` type on its own is explained by Roman in the comments here: <https://github.com/Kotlin/kotlinx.coroutines/issues/2081|https://github.com/Kotlin/kotlinx.coroutines/issues/2081>