0.17.0

New: moshi-sealed now supports nested sealed subtypes!

In some cases, it's useful to have more than one level of sealed types that share the same label key.

sealed interface Response {
  data class Success(val value: String) : Response
  sealed interface Failure : Response {
   data class ErrorMap(val errors: List<String>) : Failure
   data class ErrorString(val error: String) : Failure
  }
}

moshi-sealed now supports this out of the box via @NestedSealed annotation. Simply indicate the nested type with this
annotation.

@JsonClass(generateAdapter = true, generator = "sealed:type")
sealed interface Response {
  @TypeLabel("success")
  @JsonClass(generateAdapter = true)
  data class Success(val value: String) : Response

  @NestedSealed
  sealed interface Failure : Response {
    @TypeLabel("error_map")
    @JsonClass(generateAdapter = true)
    data class ErrorMap(val errors: List<String>) : Failure

    @TypeLabel("error_string")
    @JsonClass(generateAdapter = true)
    data class ErrorString(val error: String) : Failure
  }
}

In this case, now Failure's subtypes will also participate in Response decoding based on the type label key.

Caveats:

• @DefaultObject is only supported on direct subtypes.
• If you want to look up a subtype rather than the root parent sealed type (i.e. moshi.adapter<Response.Failure>()),
  you must add the optional NestedSealed.Factory JsonAdapter.Factory to your Moshi instance for runtime lookup.

  val moshi = Moshi.Builder()
    .add(NestedSealed.Factory())
    .build()

Kapt is no longer supported by moshi-sealed

moshi-sealed has many implementations - kotlin-reflect, kotlinx-metadata, KSP, Java sealed classes, and
recently IR. These are a lot to maintain! To cut down on maintenance, Kapt is no longer supported and has been removed
in this release. Please consider migrating to KSP or Moshi-IR.

Fix: Properly report all originating files in KSP

With Kotlin 1.5.0, sealed types could now exist across multiple files. moshi-sealed's KSP support previously assumed single files when reporting originating elements, and now properly reports all files if sealed types are spread across multiple files.