baseUrl defined as function not working

[AndersCV]

Environment

---

- Operating System: Linux
- Node Version:     v18.20.3
- Nuxt Version:     3.13.2
- CLI Version:      3.14.0
- Nitro Version:    2.9.7
- Package Manager:  npm@10.2.3
- Builder:          -
- User Config:      -
- Runtime Modules:  -
- Build Modules:    -
------------------------------

Reproduction

https://stackblitz.com/edit/nuxt-starter-qqn2vx

Describe the bug

in nuxt.config.ts define baseUrl as a function returning a string is not working correctly.

Problematic for apps with differentDomains: true as the canonical url generated by the module for SEO purposes always points the defaultLocales domain regardless for the current active locale.

Additional context

No response

Logs

No response

[drzastwakamil]

I'am experiencing same issue. My i18n config:

i18n: {
    lazy: true,
    // works perfectly fine
    baseUrl: 'https://somedomain.com',
    // never gets executed
    // baseUrl: () => {
    //   return 'https://somedomain.com';
    // },
    langDir: 'locales',
    strategy: 'prefix_except_default',
    defaultLocale: 'de',
    locales: [
      {
        code: 'de',
        language: 'de',
        name: 'DE',
        files: ['german/de.locale.common.json', 'german/de.locale.units.json', 'german/de.locale.searchQuestions.json'],
      },
      {
        code: 'en',
        language: 'en',
        name: 'EN',
        files: [
          'english/en.locale.common.json',
          'english/en.locale.units.json',
          'english/en.locale.searchQuestions.json',
        ],
      },
    ],
  }

For some reason the function never gets executed.

[drzastwakamil]

I found a solution which I'am satisfied with. Might also help you. It's not ideal but it's working. I modify the baseURL using a Nuxt Plugin.

// plugins/i18dynamicBaseUrl.ts
export default defineNuxtPlugin((nuxtApp) => {
  // @ts-ignore
  nuxtApp.$i18n.baseUrl = useRequestURL().origin;
});

I use the useRequest() function since I want the baseURL to be dynamic based on the domain. But you can put any operations you want there.

I am not sure if that's a safe approach also however the result of useLocaleHead included the baseUrl in the paths so it looks like the Seo Requirements are met with this approach.

[AndersCV]

Ah yes that looks like a pretty good workaround meanwhile! Thanks for sharing.