Cloudflare workers Hydration node mismatch
I'm moving Website from node env to Cloudfalre Workers.
Using preset cloudflare_module
On Node everything works fine, on CF workers I get Hydration node mismatch, What can be suggested to debug this?
4 Replies
Hi @Frox. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
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When moving a Nuxt app from a Node environment to Cloudflare Workers using the
Cloudflare's platform can inject scripts or modify your HTML, which may cause hydration errors. Make sure to disable the following options in your Cloudflare dashboard: - "Rocket Loader™" - "Mirage" - "Email Address Obfuscation"
These features can interfere with Nuxt's hydration process and cause mismatches between server-rendered and client-rendered DOM nodes. Disabling them helps ensure Cloudflare doesn't alter your Nuxt app's output unexpectedly.
See more details in the Nuxt deployment docs. 2. Ensure Consistent Data Fetching
Hydration errors often happen when the data rendered on the server is different from what the client receives during hydration. Use SSR-friendly composables like
Read more about hydration and data consistency. 3. Check for Environment-Specific Differences
Cloudflare Workers have a different runtime than Node.js. Some Node APIs or behaviors may not be available or may behave differently. Make sure your code does not rely on Node-specific features unless polyfilled or supported by Workers. 4. Debugging Tips
- Try to reproduce the issue with a minimal example to isolate the cause. - Check if any third-party modules or custom code behave differently on Workers. - If you use Tailwind or Vite, be aware that certain class names (e.g., those with
See related discussion. 5. Cloudflare Workers and Nuxt Content
If you use Nuxt Content, ensure your database and bindings are correctly configured for Workers.
See the deployment guide for Cloudflare Workers. If after these checks the issue persists, try to create a minimal reproduction and share it with the Nuxt community or on GitHub for more targeted help. I'm sorry, but the knowledge sources do not provide a step-by-step debugging guide specific to Cloudflare Workers hydration mismatches beyond these general recommendations. If you need more detailed troubleshooting, consider sharing a minimal reproduction of your issue. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
cloudflare_module preset, hydration node mismatch errors can occur due to differences in the runtime environment or how assets and data are handled.
Here are some steps and suggestions to debug this issue, based on the available knowledge sources:
1. Check Cloudflare-Specific OptimizationsCloudflare's platform can inject scripts or modify your HTML, which may cause hydration errors. Make sure to disable the following options in your Cloudflare dashboard: - "Rocket Loader™" - "Mirage" - "Email Address Obfuscation"
These features can interfere with Nuxt's hydration process and cause mismatches between server-rendered and client-rendered DOM nodes. Disabling them helps ensure Cloudflare doesn't alter your Nuxt app's output unexpectedly.
See more details in the Nuxt deployment docs. 2. Ensure Consistent Data Fetching
Hydration errors often happen when the data rendered on the server is different from what the client receives during hydration. Use SSR-friendly composables like
useAsyncData or useFetch to ensure data fetched on the server is reused on the client, preventing repeated requests and mismatches.Read more about hydration and data consistency. 3. Check for Environment-Specific Differences
Cloudflare Workers have a different runtime than Node.js. Some Node APIs or behaviors may not be available or may behave differently. Make sure your code does not rely on Node-specific features unless polyfilled or supported by Workers. 4. Debugging Tips
- Try to reproduce the issue with a minimal example to isolate the cause. - Check if any third-party modules or custom code behave differently on Workers. - If you use Tailwind or Vite, be aware that certain class names (e.g., those with
# or dynamic SVG masks) have caused hydration issues in production for some users.See related discussion. 5. Cloudflare Workers and Nuxt Content
If you use Nuxt Content, ensure your database and bindings are correctly configured for Workers.
See the deployment guide for Cloudflare Workers. If after these checks the issue persists, try to create a minimal reproduction and share it with the Nuxt community or on GitHub for more targeted help. I'm sorry, but the knowledge sources do not provide a step-by-step debugging guide specific to Cloudflare Workers hydration mismatches beyond these general recommendations. If you need more detailed troubleshooting, consider sharing a minimal reproduction of your issue. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
<@252212996334551040> Kapa.ai is still learning and improving, please let me know how I did by reacting below.
The problem is due to using defineAsyncComponent …
https://github.com/nuxt/nuxt/pull/32358
this is not helping
GitHub
fix(nuxt): pass
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