Node.js Design Patterns - Second Edition.pdf

Some principles and design patterns literally define the Node.js platform and its ecosystem;
the most peculiar ones are probably its asynchronous nature and its programming style that
makes heavy use of callbacks. It's important that we first dive into these fundamental
principles and patterns, not only for writing correct code, but also to be able to take effective
design decisions when it comes to solving bigger and more complex problems.
Another aspect that characterizes Node.js is its philosophy. Approaching Node.js is in fact
way more than simply learning a new technology; it's also embracing a culture and a
community. We will see how this greatly influences the way we design our applications
and components, and the way they interact with those created by the community.
In addition to these aspects it's worth knowing that the latest versions of Node.js introduced
support for many of the features described by ES2015, which makes the language even
more expressive and enjoyable to use. It is important to embrace these new syntactical and
functional additions to the language to be able to produce more concise and readable code
and come up with alternative ways to implement the design patterns that we are going to
see throughout this book.