is-main-module - npm explorer

Problem description

The standard way to detect whether NodeJS module was called directly (via CLI) or required by another module is to use
``module === require.main`

. 

When using Webpack both that objects do not refer to the original objects

`module` and `require.main`

 provided by NodeJS, as we expect by default.

See this issue



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How to use



1.

`npm i --save is-main-module`



2. Make sure you have set

`externals: [nodeExternals()]`

 in your Webpack config.

3. Check if your module is required by another one with

`!isMain()`. In addition you can get refs to this `module` and `require.main`





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Example



const thisModule = require('is-main-module');



const isThisModuleRequired = thisModule.!isMain();

const isThisModuleMain = thisModule.isMain();

const refToThisModule = thisModule.moduleRef;

const refToMainModule = thisModule.mainRef;