fix: prevent extendBaseUrl recursion

[BobbieGoede]

🔗 Linked issue

• Huge memory leak #2034

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Fixes the recursive wrapping of nuxtI18nOptions and investigated and described here #2034 (comment).

This PR #2620 by @s00d would have fixed this issue as well (credited in commit), I opted for making a copy of nuxtI18nOptions instead, to ensure the options are not mutated elsewhere by requests.

I will publish a new release after this is merged, after which I think we can close the issues related to the memory leak.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[s00d]

I have checked it on my side, and now everything is working fine. The issue is resolved, and your approach is even better than my solution. This will help avoid problems in other areas as well.

[dargmuesli]

Looking very good with my project. The main leak is gone now, only some left but I guess those are on me 😉

[BobbieGoede]

Looking very good with my project. The main leak is gone now, only some left but I guess those are on me 😉

That's good to hear, I'll publish a release in a bit, it worries me that the latest release contains this recursion issue 😥.. I still do think there are leaks, but I haven't found a reliable way to reproduce them.