[node.js] Find unused npm packages in package.json

You can use an npm module called depcheck (requires at least version 10 of Node).

  1. Install the module:

     npm install depcheck -g
    
     or
    
     yarn global add depcheck
    
  2. Run it and find the unused dependencies:

     depcheck
    

The good thing about this approach is that you don't have to remember the find or grep command.

To run without installing use npx:

npx depcheck 

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