Originally inspired by http://khanlou.com/2017/01/request-behaviors/
Depends on Soroush Khanlou’s lovely little Promise library, see https://github.com/khanlou/Promise

This project uses swift package manager. You can generate an Xcode project on the command line by running

swift package generate-xcodeproj 

This simple example sends a GET request to https://github.com/foo?foo=bar with Accept and Content-Type headers for JSON, parses the response into a MyObject class, and lets you deal with the object or potential errors in a chainable fashion.

let client = NetworkClient(baseURL: URL(string: "https://github.com")!, defaultRequestBehavior: JSONRequestBehavior())

client.GET("/foo")
  .withQuery(["foo" : "bar"])
  .sendRequest()
  .then({ result in
      return try JSONDecoder().decode(MyObject.self, from: result.data)
  }).then({ object in
    // do something with object
  }).catch { error in
      print("error: \(error)")
  }