I had a lot of trouble getting that to work, mostly because of

actual typealias

not working correctly yet. That makes it impossible to use e.g.

UUID

in your domain objects.

@diesieben07 try this and post your feedback please common:

package your.domain.package

expect class UUID

expect fun randomUUID() : UUID

jvm:

package your.domain.package

actual typealias UUID = java.util.UUID

actual fun randomUUID () : UUID = java.util.UUID.randomUUID()

js:

package your.domain.package

import ext.js.npm.uuidv4

actual class UUID

actual fun randomUUID() : UUID = uuidv4()

@file:JsModule("uuid")
package ext.js.npm

@JsName("v4")
external fun uuidv4() : dynamic

package.json

"dependencies": {
    "uuid": "^3.2.1",
...
  }

It's broken in the IDE, various things will be marked as errors even though they aren't. It's already reported on Youtrack.

it is work in my case, what structure of your project?

Your case works, but as soon as you try to do anything more elaborate (e.g. have a method in common that takes a

UUID

and call that method from the JVM module) you get all kinds of errors. Using 2018.1.1 and Kotlin 1.2.31. I build with gradle. Like I said, this bug is already reported and acknowledged: https://youtrack.jetbrains.com/issue/KT-22868

it is just IDEA problem, gradle builds it successfully

I know. I said that above 😉

oh, you are right 🙂