Hendrik LiebauandGitHub a46ff7c861 Error when accessing undefined root params in generateStaticParams (#91519) ...

Follow-up to #91189 which added support for accessing root params inside
`generateStaticParams`. Previously, if a `generateStaticParams` function
tried to read a root param that hasn't been defined yet — either because
the current segment is supposed to define it, or because a child segment
defines it — `getRootParam` would silently return `undefined`. This is
especially problematic because #91019 will type root param getters as
`Promise<string>` without `undefined`, making this a silent type safety
violation.

This change makes `getRootParam` throw an explicit error with the
`generate-static-params` work unit store when the requested param is not
present in `rootParams`.

2026-03-17 17:27:50 +00:00

..

app/[lang]/[locale]

Error when accessing undefined root params in generateStaticParams (#91519)

2026-03-17 17:27:50 +00:00

next.config.ts

Error when accessing undefined root params in generateStaticParams (#91519)

2026-03-17 17:27:50 +00:00