Disallow new require (no-new-require)
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. As such, it warns whenever new require
is found in code.
The following pattern is considered a warning:
var appHeader = new require('app-header');
The following pattern is not a warning:
var AppHeader = require('app-header');
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.
Version
This rule was introduced in ESLint 0.6.0.