How to use fs.createReadStream

Node.js / October 15, 2020 / TopCode / 0

Introduction

In this blog post, you will lean how to use fs.createReadStream() method in your Node.js application. The createReadStream() method is an inbuilt API of fs module which allows you to open up a readable stream( file/stream )and read the data present in it.

Syntax

fs.createReadStream( path, options )

This method accept two parameters as described below:

• path: The path of the readable stream . It could be a string, buffer or URL.
• options: An optional parameter .

 This method returns the fs.ReadStream object.

Following code snippet illustrates fs.createReadStream() method usage:

const fs = require('fs'),
  
// Use fs.createReadStream() method to read a file
reader = fs.createReadStream('foo.txt');
  
// Read and display the file data on console
reader.on('data', function (chunk) {
    console.log(chunk.toString());
});

// Error handler to catch any errors that happen while creating the readable stream
reader.on('error', function(err) {
    console.log("Error occurred:",err)
  });

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