Is there a MPP equivalent to

ByteArrayOutputStream

? Something that: • I can write to • Grows automatically • I can get a

ByteArray

from once I'm done

I think Okio has something.

Is okio multiplatform nowadays ?

native only one is https://github.com/JetBrains/kotlin-native/blob/master/runtime/src/main/kotlin/kotlin/native/concurrent/MutableData.kt