Pretty print JSON from an object in Swift5

gistfile1.txt

do {
  let jsonEncoder = JSONEncoder()
  jsonEncoder.outputFormatting = .prettyPrinted
  let jsonData = try jsonEncoder.encode(palettes)
  if let jsonString = String(data: jsonData, encoding: .utf8) {
      print(jsonString)
   }
} catch {
  print("error")
}