PrettyPrint Coddle

struct A: Codable {
    var a = "test"
    var b = 1
}

private extension Encodable {
    var prettyPrinted: String {
        let encoder = JSONEncoder()
        encoder.outputFormatting = [.prettyPrinted, .sortedKeys]
        return (try? encoder.encode(self))
            .flatMap { String(data: $0, encoding: .utf8) } ?? "\(self)"
    }
}