next.js bundle analyzer isn't creating pages to vew bundles

user_7208058 0
Viewed 2314

I'm trying to reduce the bundle size of my site by using https://www.npmjs.com/package/@next/bundle-analyzer

At the moment, when I run npm analyze with

"analyze": "cross-env ANALYZE=true next build",

It isn't outputting the html files with the visualization needed.

This is my next.config.js

const withPWA = require('next-pwa')
const runtimeCaching = require('next-pwa/cache')


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

module.exports = withPWA({
  pwa: {
    dest: 'public',
    runtimeCaching,
  },
  poweredByHeader: false,
},
withBundleAnalyzer(),

)

using this nextjs-analyze-app-bundle tutorial.

What is going wrong?

webpack-bundle-analyzer webpack next.js reactjs
2 Answers

Looks like this has been answered on Vercel's issues board. Copying their solution here:

These plugins are functions that enhance the configuration object, so you have to wrap them instead of providing them as arguments:

const withPWA = require('next-pwa')
const runtimeCaching = require('next-pwa/cache')


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

module.exports = withBundleAnalyzer(withPWA({
    pwa: {
        dest: 'public',
        runtimeCaching,
    },
    poweredByHeader: false,
}));
user_153695530

Before I was doing it like this,

module.exports = withBundleAnalyzer(
  withPWA({
    pwa: {
      dest: 'public',
      runtimeCaching,
    },
    poweredByHeader: false,
  })
)

module.exports = 
  {
    env: {
      BASE_URL: process.env.BASE_URL,
    },
    future: {
      webpack5: true,
    },
    reactStrictMode: true,
  }

Not sure but I think you should only need to have one module.exports so I wrapped my other stuff inside the withBundleAnalyzer like this

module.exports = withBundleAnalyzer(
  withPWA({
    pwa: {
      dest: 'public',
      runtimeCaching,
    },
    poweredByHeader: false,
  }),
  {
    env: {
      BASE_URL: process.env.BASE_URL,
    },
    future: {
      webpack5: true,
    },
    reactStrictMode: true,
  }
)
user_94199380
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