Access JSON properties dynamically like JavaScript

if let jsonObject = try? JSONSerialization.jsonObject(with: data, options: []) as? [String: Any],
   let user = jsonObject["user"] as? [String: Any],
   let username = user["username"] as? String {
	// ...
}

let username = JSON(data).user?.username?.string

pod 'DynamicJSON'

github "saoudrizwan/DynamicJSON"

let json = JSON(Data())
           JSON(123)
           JSON(["key": "value"])
           JSON(["element", 1])
           JSON("Hello world")
           JSON(false)

let json = "Hello world" as JSON
           123 as JSON
           [1, 2, 3] as JSON

let user: JSON = [
	"username": "Saoud",
	"age": 21,
	"address": [
	    "zip": "12345",
	    "city": "San Diego"
	]
]

let dictionary = json.dictionary
let array = json[0]?.cars?.array
let string = json[3]?.users?[1]?.username?.string
let nsnumber = json.creditCard?.pin?.number
let double = json[3]?[1]?.height?.double
let int = json[0]?.age.int
let bool = json.biography?.isHuman?.bool

let number = json.account?.contact?["number"]?.number
let description = json.user?.biography?["description"]?.string

let json1 = JSON(jsonData1)
let json2 = JSON(jsonData2)

// Equality applies to all types (Dictionary, Array, String, NSNumber, Bool, NSNull)
let isEqual = json1 == json2

// Less/greater than only applies to NSNumbers (Double, Int) and Strings
let isLessThan = json1 < json2
let isLessThanOrEqual = json1 <= json2
let isGreaterThan = json1 > json2
let isGreaterThanOrEqual = json1 >= json2

print(json)

let anyObject = json.object

let data = json.data() // optionally specify options...