Write a prettyPrinted JSON object with sorted keys in Swift

Question

We often want to use JSON for human readability. As such, it is common to ask to sort the JSON keys alphabetically (or alphanumerically) in Go, in .NET, in Python, in Java, ...<

Answer 1

For iOS 11+ and macOS High Sierra (10.13+), a new option .sortedKeys solves the problem easily:

JSONSerialization.writeJSONObject(jsonObject, to: outputStream, options: [.sortedKeys, .prettyPrinted], error: nil)

Thank you Hamish for the hint.