Back ArrowExplore all kits

How to import util module in Node JS

share link

by shivanisanju03 dot icon Updated: Mar 31, 2023

technology logo
technology logo

Guide Kit Guide Kit  

The Util module implements the Node.js util module for environments that do not have it. If your code runs in Node.js, util is built in, or you have to install util yourself. For accessing util module functions, we have to call them by 'require('util')'. The util.inspect is an inbuilt application programming interface of the util module, which is used for debugging and will return a string representation of the object.  


The Util module provides access to some utility functions. Syntax The syntax for including the Util module in your application: var util = require ('util'); 


Below is an example of importing the util module in Node JS. 

Fig: Preview of the output that you will get on running this code from your IDE.

Code


How to import util module in Node.js?

JavaScriptdotLines of Code : 25dotLicense : Strong Copyleft (CC BY-SA 4.0)

npm install util

const util = require('util');

class Foo {
  constructor() {
    this.a = 42;
  }

  bar(callback) {
    callback(null, this.a);
  }
}

const foo = new Foo();

const naiveBar = util.promisify(foo.bar);
// TypeError: Cannot read property 'a' of undefined
// naiveBar().then(a => console.log(a));

naiveBar.call(foo).then((a) => console.log(a)); // '42'

const bindBar = naiveBar.bind(foo);
bindBar().then((a) => console.log(a)); // '42'

Instructions


Follow the steps carefully to get the output easily.

  1. Install Node and Visual Studio Code on your computer.
  2. Create a new folder in your local.
  3. Open that folder in Visual Studio Code.
  4. Then create a new JS file(Eg: node.js).
  5. Copy the snippet using 'copy' button and paste it into that file.
  6. Save the file and open the terminal, use this command 'node filename(node.js)' to get the output in your console.


I hope you found this helpful.


NOTE: First line of the code is to install util , do not add it with the code


I found this code snippet by searching for 'How to import util module in Nodejs' in kandi. You can try any such use case!

Environment Tested


I tested this solution in the following versions. Be mindful of changes when working with other versions.

  1. The solution is created and tested in Visual Studio Code 1.74.1.
  2. The solution is tested in Node v18.15.0.


Using this solution, we are able to know how to import util module in Node JS with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to know how to import util module in Node JS

Support


  1. For any support on kandi solution kits, please use the chat
  2. For further learning resources, visit the Open Weaver Community learning page.


Open Weaver – Develop Applications Faster with Open Source

kandi

Community and Support

Company

Follow

  • © 2023 Open Weaver Inc.