Support Kotlin Multiplatform

[samoylenkodmitry]

We have to make a decision to use Moshi or write our custom Protobuf *.proto -> to Kotlin's serialization data models *.kt codegenerator.
However, we want to be open to switching to Multiplatform in the future.

Do Moshi's team have a KMM in their roadmap?

[JakeWharton]

No one is working on this library so I would not rely on this happening. The conversation to Kotlin/JVM (#1252) stalled, and that's a prerequisite.

[Siedlerchr]

I would rather use kotlinx serialization that works in kmp

[SarveshRD]

If you want to build with Kotlin Multiplatform in mind, many developers recommend using kotlinx.serialization, as it already offers robust support for KMM and is more aligned with cross-platform development​.

If cross-platform flexibility is a priority, switching to kotlinx.serialization might be the better long-term choice over relying on Moshi.