Mastering JavaScript Functional Programming

Do we need design patterns?

There is an interesting point of view that says that design patterns are only needed to patch shortcomings of a programming language. The rationale is that if you can solve a problem with a language, in a simple, trivial way, then you may not need a design pattern at all.

In any case, it's interesting, for OOP developers, to really understand why FP helps solve some problems without need of further tools. In the next section, we shall consider several well-known design patterns and take a look at why we don't need them or how we can easily implement them. It's also a fact that we have already applied several patterns earlier in the text, so we'll point out to those examples as well.

We won't try, however, to express ...