ELM如何解码json数组中的不同值

import Json.Decode exposing (Decoder, list, oneOf, string, int, bool)

type alias MyData =
    { strings : List String
    , ints : List Int
    , bools : List Bool
    }

myDataDecoder : Decoder MyData
myDataDecoder =
    Json.Decode.map3 MyData
        (Json.Decode.field "strings" (list string))
        (Json.Decode.field "ints" (list int))
        (Json.Decode.field "bools" (list bool))

jsonString : String
jsonString =
    """
    {
        "strings": ["abc", "def", "ghi"],
        "ints": [1, 2, 3],
        "bools": [true, false, true]
    }
    """

decodedData : Result String MyData
decodedData =
    Json.Decode.decodeString myDataDecoder jsonString