Pretty Printing an empty class adds a newline to json object

[luca992]

Describe the bug

Empty classes get a newline character added to the json object:

{
  "some_empty_class": {
  }
}

It's not very pretty 😅

To Reproduce

@Serializable
data class Test(
    @SerialName("some_empty_class") val someEmptyClass: SomeEmptyClass,
)

@Serializable
class SomeEmptyClass

println(Json{prettyPrint = true}.encodeToString(Test(SomeEmptyClass())))

Expected behavior
All other libraries I have used when pretty printing would output:

{
  "some_empty_class": {}
}

Environment

• Kotlin version: [e.g. 1.9.20]
• Library version: [e.g. 1.6.0]

[sandwwraith]

Well, it is a matter of preference, mostly :) But I agree that since most libraries fold empty objects, we should likely do the same.

[luca992]

Well, it is a matter of preference, mostly :) But I agree that since most libraries fold empty objects, we should likely do the same.

Yeah for sure haha. I just haven't seen other libraries do it that way 👍