Emit build error for unknown cache kinds (#72832)
When a `"use cache"` directive with a custom cache kind is used, e.g.
`"use cache: custom"`, a cache handler with the same name must be
specified in the Next.js config:
```js
/**
* @type {import('next').NextConfig}
*/
const nextConfig = {
experimental: {
dynamicIO: true,
cacheHandlers: {
custom: require.resolve('path/to/custom/cache/handler'),
},
},
}
module.exports = nextConfig
```
If this is not the case, we emit a build error with an error message
that explains this requirement.
<img width="795" alt="Screenshot 2024-11-14 at 23 30 01"
src="https://github.com/user-attachments/assets/bd138c97-608f-42ce-abb2-edb3e44edc3f">
When we'll get a docs page for this experimental config, we will add the
usual "Read more: ..." hint as well.
---------
Co-authored-by: Benjamin Woodruff <benjamin.woodruff@vercel.com>
Co-authored-by: Janka Uryga <lolzatu2@gmail.com>
