Make sure installation is complete and pre-requisites are met
HCaptcha exposes its API to real native code, so it can be used from Objective-C.
Because HCaptcha is a pure Swift library, it exposes its API through the @objc attribute.
The @objc attribute makes Swift methods, properties, and classes available to Objective-C code. By marking a Swift method or class with @objc, it is automatically bridged to Objective-C, allowing for interoperability between Swift and Objective-C.
Also because Objective-C doesn't support optional arguments, the most popular constructors of HCaptcha are available in Objective-C
The full code is in ViewController.m.