Introduction to the Node.js API

Learn about the Node.js API, and set up our project folder to practice newly learned concepts.

We'll cover the following

By the end of this chapter, we’ll be able to do the following:

  • Use the fs module to access and interact with the file system.
  • Use the process module to interact with the current Node.js process.

Node.js API overview

Let’s get started with Node.js by exploring its module system.

The module system allows us to load built-in Node.js modules as well as third-party libraries into our application to perform various tasks, including but not limited to the following:

  • Create web servers
  • Manipulate the file system.
  • Make HTTP requests
  • Connect to a database.

In this chapter, we’ll explore two popular and widely used built-in Node.js modules: process and fs.

We’ll also apply the http and https modules to create web servers, make HTTP requests, and perform other networking tasks.

Setup

Follow the setup instructions below:

  1. Inside intro-to-nodejs-course, create a subfolder called nodejs-api, and move into it:
mkdir intro-to-nodejs-course
cd intro-to-nodejs-course
mkdir nodejs-api
cd nodejs-api
  1. Inside nodejs-api, create these files: file-system.js, process.js, and test.txt.
touch file-system.js process.js test.txt

Try the steps above in the provided terminal.

Terminal 1
Terminal
Loading...

Later, we’ll be using some dmmy text in test.txt, which is the file we will interact with in this chapter.

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