Builder pattern
The third design pattern that you will learn about now is the Builder pattern. This pattern deals with simplifying the process of creating complex objects. We start by learning more about Builder and why it exists. You will then see a typical implementation in TypeScript together with some modern variants. At the end of this section, you will get all the necessary skills to apply this pattern when needed in real-world applications.
Builder is a creational design pattern that you can use to deal with the step-by-step construction of objects that can have multiple future representations. Quite often you create objects that take more than two or three parameters and many of those parameters are not known ahead of time. They are required, though, to initialize the object with the right state.
We might have complex objects for a variety of reasons. For example, the business domain might want to attach several cohesive attributes to the objects for easier access. In...
