Writing TypeScript code using a functional programming style has many benefits, among which we can highlight the following:
- Our code is testable: If we try to write our functions as pure functions, we will be able to write unit tests extremely easily. We will learn more about pure functions later in this chapter.
- Our code is easy to reason about: Functional programming can seem hard to understand for developers with a lack of experience in functional programming. However, when an application is implemented correctly using the functional programming paradigm, the results are very small functions (often one-line functions) and very declarative APIs that can be reasoned about with ease. Also, pure functions ...