I'm getting a platform declaration clash:

val Map<UInt, UInt>.hex: String
    get() = this.map { "${it.key.hex}=${it.value.hex}" }.toString()

@get:JvmName("mapIntByteHex")
val Map<UInt, UByte>.hex: String
    get() = this.map { "${it.key.hex}=${it.value.hex}" }.toString()

I added the

@JvmName

annotation to fix the error in the IDE. However, when I try to build I still get an error:

Error:(1, 1) Kotlin: Platform declaration clash: The following declarations have the same JVM signature (hex$annotations(Ljava/util/Map;)V):
    val Map<UInt, UByte>.hex: String...
    val Map<UInt, UInt>.hex: String...

Is there a way around this without changing the property names?

Works fine for me, are you sure the JVM is your only platform?

The issue can be in the annotations of these properties omitted from the example. I've reproduced and filed the issue here: https://youtrack.jetbrains.com/issue/KT-31352

Interesting, why does

hex$annotations

exist?

Thanks Ilya! I ended up deciding my annotations were really better off as functions extensions than property extensions and that solved the issue