How to Remove Duplicate Elements from an Array in JavaScript

Unused dependencies can bloat your project and introduce vulnerabilities. Here’s how to clean them effectively:

Tools for Detection

1. npm-check: Identifies unused and outdated dependencies. bash
   npm install -g npm-check
   npm-check
2. depcheck: Performs static analysis to find unnecessary or missing libraries.
   npm install -g depcheck
   depcheck

Manual Inspection

Open package.json and verify dependencies manually using your IDE’s search feature.

Build Tools for Analysis

Use tools like webpack-bundle-analyzer or vite-plugin-analyzer to visualize and identify unnecessary libraries in your project’s build.

Removing Dependencies

Run:

Best Practices

• Regularly use tools like depcheck in your CI/CD pipeline.
• Track package.json changes during code reviews.
• Document dependencies and their purposes for clarity.

For TypeScript Projects

Enable unused code detection:

1 {  
2   "compilerOptions": {  
3     "noUnusedLocals": true,  
4     "noUnusedParameters": true  
5   }  
6 }

Frequent checks keep your project efficient and secure!