Forwarding my question and thread here as this should be the better place for it.

For backwards conversion, you can use this: https://github.com/Kotlin/kotlinx.serialization/blob/master/docs/runtime_usage.md#dynamic-object-parser-js-only For Kotlin->JS conversion, there’s a feature request that is not implemented yet: https://github.com/Kotlin/kotlinx.serialization/issues/116.

ah cool. I will add that ticket to my watch list. I am trying to use kotlin for a programming game (Screeps) that uses Javascript to run bots in a MMO world. This feature would be very helpful