Creating readable and writable streams

The Node.js stream core module provides the Node.js stream API. This recipe will introduce using streams in Node.js. It will cover how to create both a readable stream and a writable stream to interact with files using the Node.js core fs module.

Getting ready

Before diving into this recipe, we must set up our workspace by creating a directory and files:

1. First, let’s create a directory to work in:

   $ mkdir learning-streams
   $ cd learning-streams

2. Create the following two files:

   $ touch write-stream.js
   $ touch read-stream.js

Now, we’re ready to start this recipe.

How to do it…

In this recipe, we’ll learn how to create both a readable stream and a writeable stream. First, we’ll create a writable stream so that we can write a large file. After, we’ll read that large file using a readable stream:

1. Start by importing the Node.js core File system module into write-stream.js:

   const...