Node.js was created by Ryan Dahl in 2009.

Node.js itself includes several main components:

• the V8 engine;

• libuv library, which is responsible for the central part of node - the event loop, which interacts with the OS, as well as for asynchronous input/output (I/O);

• from a set of different JS libraries and the JS language itself.

Let's move on to its pros and cons.

Pros:

• ease and speed of writing

• lightweight

• relative simplicity (compared to java)

• npm (node package manager (a huge number of libraries that can be installed in one line)

• each library gets into the dependency tree and all this is done easily

• constant development (now TypeScript is actively developing (which brings typing, decorators to JS and is used for example for Angular)

Cons:

• flexibility and rapid development also gives rise to disadvantages because you need to constantly monitor updates, some things are not sufficiently tested;

• there was a case when a developer removed his library from NPM and many applications using it stopped working;

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