Swift Encodable Dont Encode

dontencode.swift

@propertyWrapper
struct DontEncode<T: Codable> {
    var wrappedValue: T
}

extension DontEncode: Codable {
    init(from decoder: Decoder) throws {
        self.wrappedValue = try T(from: decoder)
    }

    func encode(to encoder: Swift.Encoder) throws {
        fatalError("this propertys will not encode")
    }
}

extension KeyedEncodingContainer {
    mutating func encode<T>(
        _ value: DontEncode<T>,
        forKey key: KeyedEncodingContainer<K>.Key) throws where T: Encodable {
        // ignore
    }
}