@lewik You need to produce artifacts with common declarations and with binaries for each platform and then publish them as usual. For example consider a library

lib

with

common

,

jvm

and

js

modules, then you need to pack

lib.jar

with common declarations,

lib-jvm.jar

with the compiled classes for JVM, and

lib-js.jar

with the compiled js code for JS. Then you publish all three to your maven repository as usual. Also welcome to #multiplatform channel.