Encodable and Decodable helper extensions

CodableHelper.swift

extension String {
    
    func parse<D>(to type: D.Type) -> D? where D: Decodable {
        
        let data: Data = self.data(using: .utf8)!
        
        let decoder = JSONDecoder()
        
        do {
            let _object = try decoder.decode(type, from: data)
            return _object
            
        } catch {
            return nil
        }
    }
}

protocol StringEncodable: Encodable {
    func asData() -> Data?
    func asString() -> String?
}

extension StringEncodable{
    
    func asString() -> String? {
        
        guard let data = asData() else {
            return nil
        }
        
        return String(data: data, encoding: .utf8)
    }
    
    func asData() -> Data? {
        var jsonData = Data()
        let jsonEncoder = JSONEncoder()
        do {
            jsonData = try jsonEncoder.encode(self)
        }
        catch {
        }
        return jsonData
    }
}