Node JS Modules you need to learn if you are a beginner

NodeJS is an open-source single thread JavaScript runtime environment for the server. NodeJS built on Chrome V8 Engine. Nowadays, JavaScript is one of the most popular languages. JavaScript has too many libraries and packages of front-end, back-end, and mobile development.

It’s also powerful packages related to data science and machine learning. So I will try to share how we can make a career in Full-Stack JavaScript Developer in upcoming blogs. In this blog, Today I am sharing with you NodeJS Modules to learn if you are a beginner.

NodeJS Modules

You can acknowledge the modules as like the javascript libraries. Every module has its classes and functions that assist in creating a real web application. We can also create custom modules.

1- HTTPS

Https is a built-in module. It needs to start the creates a server object to listen and send the requests from the client-side on a specific server port and path. It parses a header and body message when the req. end() function call.

We can customize or send the raw headers and also set HTTP Status codes. This module supports the Events as if the user connects or abort to the server. We can run a callback function when the event fire.

2- File system

It is a module to interact with the file system of your computer or a server. Common uses Create, Write, Read, Delete and Rename of the files.

The filesystem work with asynchronous and synchronous operations. Use asynchronous operation otherwise if we use synchronous operations on a server which have thousands of clients. It won’t work properly because NodeJS has a single thread.

 3- Events

Events are one of the core modules of NodeJS. Every action on the computer is an event. When the user double click on the file than event fire and this event open the file. In the same way in NodeJS Events on asynchronous event-driven architecture in a certain type of object called emitter. Emit named event function that causes the object called the listener.

4- OS

OS module gets information about the operating system. We can check the total memory and available free memory of your system. It’s monitor the server resources for the powerful tasking.

We can arrange the events and tasks according to server performance. We can also get many reports like load avg, uptime etc.

5- Path

Path module gives a way of working with the files and directories. First of all, We create an object to get information about the files and directories. basename(), dirname(), Join() etc. These functions return the data about the file or a directory.  

6- Streams

This module allows us to stream the data. There are mainly three types of streams. Readable, writeable and duplex streams. But the nodejs provide the readable and writeable streams.

Readable streams allow us to read the data from the stream and writeable stream allow to write the data from the streams.