{ newstate : Jawa.State.State
, oldstate : Jawa.State.State
, reason : Jawa.State.State
}
https://docs.jwplayer.com/players/reference/playback-events-1#onbuffer
decoder : Json.Decode.Decoder Buffer
A JSON decoder.
encode : Buffer -> Json.Encode.Value
A JSON encoder.
tag : String
The tag that describes this type.