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kotlinlang

What is the status for `encodeDefaults` and JSON serializer? This case doesn't work for me:

```
        @Serializable data class N(val s: String, val l: List&lt;Int&gt;? = null)
        assertEquals("""{"s":"s"}""", JSON(encodeDefaults = false).stringify(N.serializer(), N("s")))
```

okay, I see <https://github.com/Kotlin/kotlinx.serialization/blob/62f4a4f4898ec5957c72031491e3b1455ba7fdbb/runtime/common/src/test/kotlin/kotlinx/serialization/features/SkipDefaults.kt#L17>

<@U6647LJ30> is there an issue to watch for?

This one? <https://github.com/Kotlin/kotlinx.serialization/issues/58>

Yes. It is working in dev branch with dependency on dev compiler only for now

Thanks! Unfortunately custom serializer doesn't work on native, too: <https://kotlinlang.slack.com/archives/C3SGXARS6/p1543526155656700>