What is Next.js Bundle Analyzer and how do I use it?

What is Next.js Bundle Analyzer and how do I use it?

Next.js Bundle Analyzer is a tool that helps you visualize the size of your JavaScript bundles. It allows you to see which modules are taking up the most space, helping you optimize your application.

How can I install it in my Next.js project?

You can install it by running npm install @next/bundle-analyzer in your project directory. Then, you need to configure it in your next.config.js file.

Can you show me an example of the configuration?

Sure! Here’s a basic example:

const withBundleAnalyzer = require('@next/bundle-analyzer')({
  enabled: process.env.ANALYZE === 'true',
});

module.exports = withBundleAnalyzer({
  // your Next.js config
});

What command do I run to analyze the bundle?

You can run ANALYZE=true npm run build to generate the bundle analysis report.