fix: set router.base to app.baseURL

[wattanx]

🔗 Linked issue

resolve: #16
resolve: #790

❓ 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

Nuxt 2's router.base must use app.baseURL in Nuxt 3 and Nuxt Bridge.
Fixed the app.baseURL value to be set to _app.basePath, since the Nuxt 2 router must also be configured when using app.baseURL.
(Without this modification, both app.baseURL and router.base must be set.)

📝 Checklist

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

[danielroe]

Nuxt 2 has a very early concept of app.baseURL as _app.basePath here:

https://github.com/nuxt/nuxt/blob/18ae3e1d8b564fbdf78dbbc6963b8f90bcf07b0c/packages/vue-app/template/router.js#L105

and here:

https://github.com/nuxt/nuxt/blob/18ae3e1d8b564fbdf78dbbc6963b8f90bcf07b0c/packages/config/src/options.js#L467-L471

Maybe it would be worth respecting that instead?

[wattanx]

It looked better to use _app.basePath, so I fixed it!
Thank you!

Sorry, this implementation does not work with webpack and nitro: true.
I will fix it.

[wattanx]

There is some processing that depends on router.base and cannot be replaced by _app.basePath 😢
https://github.com/nuxt/nuxt/blob/18ae3e1d8b564fbdf78dbbc6963b8f90bcf07b0c/packages/webpack/src/config/client.js#L186