Sealed trait reader throws MatchError instead of Invalid

Trying to read wrong JSON as a tagged union type, e.g.:

sealed trait T 

object T {
  case class A(a: String) extends T
  case class B(b: Int) extends T
}
...
val x = read[T]("""{ "test" : "hello" }""")

results in a scala.MatchError (compiled with Scala.js):

caught scala.MatchError: Obj(ArrayBuffer((test,Str(hello)))) (of class upickle.Js$Obj)
$c_s_PartialFunction$$anon$1.apply__O__sr_Nothing$ @ PartialFunction.scala:253
$c_s_PartialFunction$$anon$1.apply__O__O @ PartialFunction.scala:251
$c_Lupickle_AttributeTagged$$anonfun$annotate$2.applyOrElse__Lupickle_Js$Value__F1__O @ Api.scala:49

Which points to this code where there is an obviously unsafe match block.

Is this the expected behaviour?

ID: 101 Original Author: mechkg

amnaredo / test

Sealed trait reader throws MatchError instead of Invalid #136