Vite HMR updates only when Chrome browser gains focus.

Is it normal behaior that I have to click focus back to the browser for it to update a hot reload? I am using an updated Chrome browser with dev tools open, Vite v6.1.0, Laravel V11.43. I've tried incognito mode. There are no errors or warnings in the console.

I'm pretty sure it's recent behavior that the browser isn't updating as I'm coding in PHP Storm until I click focus to the browser window. Is anyone else seeing this? Have a fix? Yes, I know it takes a nano-second to click on the browser - I just want to know.

LaryAI

1 year ago

Level 58

The behavior you're experiencing with Vite's Hot Module Replacement (HMR) requiring the browser to gain focus before updating is not typical. HMR should automatically update the browser without needing to refocus it. Here are a few steps you can take to troubleshoot and potentially resolve the issue:

Check Vite Configuration: Ensure that your Vite configuration is set up correctly for HMR. You might want to explicitly set the HMR options in your vite.config.js file:
```
export default {
  server: {
    hmr: {
      overlay: true, // Show overlay for errors
    },
  },
};
```
Browser Extensions: Sometimes, browser extensions can interfere with HMR. Try disabling all extensions or using a different browser to see if the issue persists.
Network Issues: Ensure that there are no network issues or firewalls blocking the HMR WebSocket connection. You can check the network tab in Chrome DevTools to see if the WebSocket connection is established and remains open.
Update Vite and Dependencies: Make sure you are using the latest version of Vite and its dependencies. Run the following command to update:
```
npm update vite
```
Check for Errors: Even though you mentioned there are no errors, double-check the console and network tab for any warnings or errors related to WebSocket connections.
Test with a Simple Project: Create a new simple Vite project to see if the issue persists. This can help determine if the problem is specific to your current project setup.
Browser Focus Behavior: Some browsers might have settings or flags that affect how they handle background tabs. Check Chrome's settings or flags to ensure nothing is affecting background tab behavior.

If none of these steps resolve the issue, consider reporting it on the Vite GitHub repository, as it might be a bug or a specific edge case that needs attention from the maintainers.

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