NullableURLPropertyWrapper.swift

import Foundation

@propertyWrapper
public struct NullableURL: Codable {
    
    public let wrappedValue: URL?
    
    public init(wrappedValue: URL?) {
        self.wrappedValue = wrappedValue
    }
    
    public init(from decoder: Decoder) throws {
        let container = try decoder.singleValueContainer()
        self.wrappedValue = try? container.decode(URL?.self)
    }
    public func encode(to encoder: Encoder) throws {
        try wrappedValue.encode(to: encoder)
    }
}