Wasp•12mo ago

[Error] TypeError: Module name, '.prisma/client/index-browser' does not resolve to a valid URL.

I ran into an issue after deploying to fly.io which I believe is related to Enums:
[Error] TypeError: Module name, '.prisma/client/index-browser' does not resolve to a valid URL.

I used something like

import { PostStatus, MediaType } from '@prisma/client';

import { PostStatus, MediaType } from '@prisma/client';

to have types on the client.

Works locally though. Any help would be appreciated. What does fly do differently than when running locally?

kapa.ai•1/7/25, 9:54 PM

Hi @Samir Alibabic. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base.

kapa.ai•1/7/25, 9:55 PM

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This error is related to how Prisma client is being imported on the client-side after deployment to Fly.io. The issue stems from differences in how the Prisma client is handled in the production build compared to the local development environment. Let me explain the problem and provide a solution based on the available information.

The error occurs because the client-side code is trying to import Prisma types directly, which is not supported in the production build. When running locally, this import might work due to how the development environment is set up, but it fails in the production environment on Fly.io.

To resolve this issue, you should avoid importing Prisma types directly on the client-side. Instead, you can define these types manually in your client-side code or import them from a shared types file. Here's what you can do:

Create a separate file for shared types, for example, :

Import these types in your client-side code instead of importing from '@prisma/client':

This approach ensures that your client-side code doesn't depend on Prisma directly, which is causing the issue in the production build.

For more information on deploying Wasp apps to Fly.io and handling potential issues, you can refer to the following resources:

kapa.ai•1/7/25, 9:55 PM

These resources provide guidance on the deployment process and might help you understand the differences between local development and production environments on Fly.io.

If you continue to face issues after making these changes, you may need to review your deployment configuration and ensure that all necessary environment variables and build steps are correctly set up for your Fly.io deployment.
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Note: you can ask me a follow up question by @ mentioning me again

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kapa.ai•1/7/25, 9:55 PM

Sorry @Samir Alibabic, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist:

Perhaps try again in 15mins?

Samir AlibabicOP•1/8/25, 8:03 AM

@kapa.ai I've made the changes and now use separate file for shared types but I still get:
[Error] TypeError: Module name, '.prisma/client/index-browser' does not resolve to a valid URL.
or in firefox:
Uncaught TypeError: The specifier “.prisma/client/index-browser” was a bare specifier, but was not remapped to anything. Relative module specifiers must start with “./”, “../” or “/”. index-c6x-aDJm.js:1:15

kapa.ai•1/8/25, 8:03 AM

Let me check the knowledge base for you again. One moment!

kapa.ai•1/8/25, 8:03 AM

----------------------
I apologize that the previous solution didn't resolve your issue. It seems that the problem persists and is likely related to how Prisma client is being referenced in your production build. Let's explore this further based on the information available in our knowledge sources.

The error you're seeing suggests that there's still an attempt to import Prisma client on the client-side, which isn't supported in the browser environment. This could be happening due to a few reasons:

There might be some leftover imports from '@prisma/client' in your client-side code.
The build process might be including Prisma client in the client bundle incorrectly.

To address this, I recommend the following steps:

Double-check all your client-side files to ensure there are no remaining imports from '@prisma/client'. This includes not only direct imports but also any re-exports or indirect uses.
Review your Wasp configuration file (main.wasp) to ensure that Prisma-related operations are correctly set up. According to the Github issue about Prisma-related operations, Wasp has been working on moving Prisma-related operations to the project's top level. Make sure your project structure aligns with the latest Wasp recommendations.
If you're using any custom webpack or build configurations, ensure they're not inadvertently including Prisma client in the client bundle.
Try running
```
wasp clean
```
```
wasp clean
```
and then
```
wasp start
```
```
wasp start
```
again locally to ensure all generated files are up-to-date and correctly structured, as suggested in a 🙋questions(Resolved) Prisma Error on Mac.

kapa.ai•1/8/25, 8:03 AM

When deploying to Fly.io, make sure you're using the latest deployment commands and following the most recent documentation. The Wasp documentation on deploying to Fly.io provides the following command for deployment:

Ensure you're running this command from the correct directory (usually ).

Check your environment variables, especially
```
DATABASE_URL
```
```
DATABASE_URL
```
, to make sure they're correctly set for your Fly.io deployment. You can use to set these variables.

If after trying these steps you're still encountering the same error, it might be helpful to share more details about your project structure, main.wasp file contents, and any custom configurations you might have. This would allow for a more targeted diagnosis of the issue.

Remember, the goal is to ensure that Prisma client is only used on the server-side and that no Prisma-specific code is being bundled with your client-side JavaScript.
----------------------
Note: you can ask me a follow up question by @ mentioning me again

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kapa.ai•1/8/25, 8:04 AM

Sorry @Samir Alibabic, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist:

Perhaps try again in 15mins?

Samir AlibabicOP•1/8/25, 8:09 AM

@kapa.ai If I have prisma/client in a hook thats being used in client, this could also be the issue? I have a few places where I import prisma/client and those utiliy functions are used in both, frontend and backend.

Samir AlibabicOP•1/8/25, 8:10 AM

kapa.ai•1/8/25, 8:10 AM

Let me check the knowledge base for you again. One moment!

MEE6•1/8/25, 8:10 AM

Wohooo @Samir Alibabic, you just became a Waspeteer level 1!

kapa.ai•1/8/25, 8:11 AM

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Yes, you're absolutely correct. Importing in hooks or utility functions that are used on the client-side is indeed likely to be the source of your issue. This is a common mistake that can lead to the error you're experiencing.

In Wasp, and generally in web applications, Prisma should only be used on the server-side. The Prisma client is not designed to run in the browser environment, which is why you're seeing the error about the module not resolving to a valid URL.

Here's what you should do:

Identify all instances where you're importing in your codebase, especially in hooks or utility functions that might be used on the client-side.
Refactor these functions to separate the client-side and server-side logic. You should move all Prisma-related operations to the server-side, typically in your queries and actions.
For client-side code that needs data from the database, use Wasp's operations (queries and actions) instead of directly accessing Prisma.

Here's an example of how you might refactor:

Instead of:

You should have:

This approach ensures that all Prisma operations are performed on the server, while the client only deals with the results.

kapa.ai•1/8/25, 8:11 AM

For more information on how to properly structure your Wasp app and use operations, you can refer to the Wasp documentation on working with entities.

Remember, as mentioned in the documentation:

"You can only use the Prisma Client in your Wasp server code."

By following these guidelines and refactoring your code to keep Prisma operations server-side, you should be able to resolve the error you're experiencing both locally and in your Fly.io deployment.
----------------------
Note: you can ask me a follow up question by @ mentioning me again

----------------------

kapa.ai•1/8/25, 8:11 AM

Sorry @Samir Alibabic, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist:

Perhaps try again in 15mins?

Samir AlibabicOP•1/8/25, 8:53 AM

Resolved.
I was importing @prisma/client in some hooks and utility functions that were shared, and replacing with shared types, did the trick.
Just in case anyone asks :be:

miho•1/8/25, 10:04 AM

@Samir Alibabic just to check, you were importing the server specific values (not types) on the client?

Samir AlibabicOP•1/8/25, 12:00 PM

Correct