Disallow new operators with calls to require

This rule was deprecated in ESLint v7.0.0. Please use the corresponding rule in eslint-plugin-n.

The require function is used to include modules that exist in separate files, such as:

var appHeader = require('app-header');

Some modules return a constructor which can potentially lead to code such as:

var appHeader = new require('app-header');

Unfortunately, this introduces a high potential for confusion since the code author likely meant to write:

var appHeader = new (require('app-header'));

For this reason, it is usually best to disallow this particular expression.

Rule Details

This rule aims to eliminate use of the new require expression.

Examples of incorrect code for this rule:

Open in Playground
/*eslint no-new-require: "error"*/

var appHeader = new require('app-header');

Examples of correct code for this rule:

Open in Playground
/*eslint no-new-require: "error"*/

var AppHeader = require('app-header');
var appHeader = new AppHeader();

When Not To Use It

If you are using a custom implementation of require and your code will never be used in projects where a standard require (CommonJS, Node.js, AMD) is expected, you can safely turn this rule off.


This rule was introduced in ESLint v0.6.0.


Change Language