JSON Swift String Interpolation

JSONStringInterpolation.swift

extension String.StringInterpolation {
    mutating func appendInterpolation(json JSONData: Data) {
        guard let JSONObject = try? JSONSerialization.jsonObject(with: JSONData, options: []),
              let jsonData = try? JSONSerialization.data(withJSONObject: JSONObject, options: .prettyPrinted) else {
            appendInterpolation("Invalid JSON data")
            return
        }
        appendInterpolation("\n\(String(decoding: jsonData, as: UTF8.self))")
    }
}

// Use

let jsonData = """
    {
        "name": "Wassily Kandinsky"
    }
""".data(using: .utf8)!

print("The provided JSON is \(json: jsonData)")