N
Nuxt•2mo ago
Zhaolin Lau

generate warning

when i build using generate, it shows WARN 11:28:58 PM (!) Some chunks are larger than 500 kB after minification. Consider: - Using dynamic import() to code-split the application - Use build.rollupOptions.output.manualChunks to improve chunking: https://rollupjs.org/configuration-options/#output-manualchunks - Adjust chunk size limit for this warning via build.chunkSizeWarningLimit.
Rollup
The JavaScript module bundler
2 Replies
kapa.ai
kapa.ai•2mo ago
Hi @Zhaolin Lau. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- The warning you are seeing during the build process: 
(!) Some chunks are larger than 500 kB after minification. Consider:
- Using dynamic import() to code-split the application
- Use build.rollupOptions.output.manualChunks to improve chunking: <https://rollupjs.org/configuration-options/#output-manualchunks>
- Adjust chunk size limit for this warning via build.chunkSizeWarningLimit.
(!) Some chunks are larger than 500 kB after minification. Consider:
- Using dynamic import() to code-split the application
- Use build.rollupOptions.output.manualChunks to improve chunking: <https://rollupjs.org/configuration-options/#output-manualchunks>
- Adjust chunk size limit for this warning via build.chunkSizeWarningLimit.
is a standard message from the build tool (Vite/Rollup) used by Nuxt. It indicates that some of your JavaScript chunks are quite large, which can negatively impact your application's loading performance. How to address this warning: 1. Dynamic Imports for Code Splitting:
Use import() to dynamically load parts of your application. This splits your code into smaller chunks that are loaded only when needed, improving initial load time. 2. Manual Chunking:
You can customize how chunks are split by using the build.rollupOptions.output.manualChunks option in your Nuxt config. This allows you to group dependencies or modules into separate chunks. For example: 
   export default defineNuxtConfig({
     vite: {
       build: {
         rollupOptions: {
           output: {
             manualChunks: id => {
               if (id.includes('node_modules')) {
                 if (id.includes('gsap')) {
                   return 'gsap'
                 }
                 if (id.includes('pinia') && !id.includes('vue')) {
                   return 'vendor-utils'
                 }
                 if (id.includes('@vueuse') && !id.includes('vue')) {
                   return 'vendor-vueuse'
                 }
               }
             }
           }
         }
       }
     }
   })
   
   export default defineNuxtConfig({
     vite: {
       build: {
         rollupOptions: {
           output: {
             manualChunks: id => {
               if (id.includes('node_modules')) {
                 if (id.includes('gsap')) {
                   return 'gsap'
                 }
                 if (id.includes('pinia') && !id.includes('vue')) {
                   return 'vendor-utils'
                 }
                 if (id.includes('@vueuse') && !id.includes('vue')) {
                   return 'vendor-vueuse'
                 }
               }
             }
           }
         }
       }
     }
   })
This example is adapted from a real-world Nuxt config and shows how you can split specific libraries into their own chunks to reduce the size of your main bundle Nuxt3 build .output folder remains empty, nothing copied from .nuxt Part 2. 3. Adjust the Warning Threshold:
If you are aware of your chunk sizes and are okay with them, you can increase the warning threshold using build.chunkSizeWarningLimit in your Vite config. Summary:
This warning is informational and does not stop your build. However, addressing it by splitting large chunks can improve your app's performance, especially for users on slow networks or devices. For more details, see the official Rollup manualChunks documentation and the related Nuxt discussion Nuxt3 build .output folder remains empty, nothing copied from .nuxt Part 2. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
kapa.ai
kapa.ai•2mo ago
<@520675622830342144> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

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