DictionaryDecoder - close to insanity?

gistfile1.txt

internal class DictionaryDecoder: JSONDecoder {
    func decode<T>(_ type: T.Type, from dictionary: Any) throws -> T where T : Decodable {
        let jsonData = try JSONSerialization.data(withJSONObject: dictionary, options: [])
        return try decode(T.self, from: jsonData)
    }
}