With the Decorator pattern you can add behaviour to classes dynamically.
In this example I'll show you how to program a system to sell Tesla cars with many options (such as Auto Pilot). Each option affects the price of the car differently and a customer can choose many options or none at all. This is exactly the kind of problem that you can solve efficiently with a Decorator pattern.
Interested? Continue watching this series and learn more design patterns:
https://goo.gl/e1Ab4w
Are you new to TypeScript? Check out my video series to get started with TypeScript:
https://goo.gl/mOEotf
The code used in this video is available on GitHub:
https://github.com/SavjeeTutorials/typescript-design-patterns
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