docs: Add next-i18n-router
as a resource for internationalized routing
#52344
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Why?
Many developers are asking how to add internationalized routing in the App Router as it works in the Pages Router. next-i18n-router is a very helpful package that fully solves this challenge.
How?
Unlike the example provided in these Next.js i18n docs, next-i18n-router does not require nesting all pages in a
[lang]
dynamic segment. It also allows for the default language to be accessible without a locale prefix in the path (just like in the Pages Router).It includes locale detection based on the
accept-language
header as recommended in the Next.js docs, as well as support for theNEXT_LOCALE
cookie to set a user's preferred language (just like in the Pages Router).