{ decoder : Result Http.Error Bytes -> decoded
, fields : List ( String
, String )
, headers : List ( String
, String )
, url : Maybe String
}
submit : Bytes.Decode.Decoder decoded -> { fields : List ( String, String ), headers : List ( String, String ) } -> Fetcher (Result Http.Error decoded)
map : (a -> b) -> Fetcher a -> Fetcher b