Recent changes to blog pages surfaced existing errors because we stopped
silently swallowing errors. We were not properly handing the case when
the requested slug was not found, now this properly calls notFound()
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Enhanced error handling for missing blog posts to display a proper
"Not Found" page instead of showing an application error when users
attempt to access unavailable blog content.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## What kind of change does this PR introduce?
- Bug fix that resolves DEPR-396
- Additional improvements to blog post image handling
## What is the current behavior?
Blog post Open Graph metadata often prefers `imgThumb` over `imgSocial`,
so social previews on X, iMessage, and similar surfaces can render the
on-site thumbnail instead of the intended social image.
The image selection and path-normalization rules are also duplicated
across blog surfaces, which makes the precedence rules easy to drift.
## What is the new behavior?
- Centralizes blog image handling in `apps/www/lib/blog-images.ts`
- Uses `imgSocial` first, then `imgThumb`, for blog OG/Twitter metadata
- Uses `imgThumb` first, then `imgSocial`, then the placeholder, for
blog thumbnails and post hero images
- Normalizes relative blog image paths into absolute URLs for metadata
- Adds warning-only validation during content reads/builds for partial
or malformed `imgSocial` / `imgThumb` config
- Updates a few recent blog posts so `imgThumb` is a thumbnail-only
asset instead of duplicating the social image
## Additional context
- Replaces #42319 with the additional above fixes
- Added unit coverage for the shared image helper
---------
Co-authored-by: Alan Daniel <stylesshjs@gmail.com>
## What kind of change does this PR introduce?
Frontmatter name change.
## What is the current behavior?
We repeatedly mistake `thumb` for `image` and visa versa, meaning the
wrong images are used for Open Graph and in-site thumbnails on blog
posts. Events and case studies use the same naming convention too.
## What is the new behavior?
These two bits of frontmatter are renamed for clarity:
- Blog posts: `imgThumb` + `imgSocial`
That mapping for blog posts:
- `thumb` is now `imgThumb`
- `image` is now `imgSocial`
These related bits remain as-is:
- Events
- Case studies
The
[www/README.md](https://github.com/supabase/supabase/blob/dnywh/chore/blog-image-frontmatter/apps/www/README.md#best-practices)
file has been expanded to clarify all of the above. It now also provides
instructions on image optimisation.
## To test
A lot of files were touched here. Please help make sure:
- [ ] The CMS works as intended. This is the **biggest unknown**.
- [x] All blog posts render the correct image as their on-site thumbnail
and Open Graph image. You can test the latter by firing up a draft
iMessage. Online Open Graph services like Facebook cache images, so
aren’t reliable.
- [x] All events render their correct images
- [x] All case studies render their correct images
- [x] All customer stories render their correct images ([known
issue](https://supabase.slack.com/archives/C072FL5KKKP/p1768888063209359?thread_ts=1768885681.502169&cid=C072FL5KKKP),
predates this work)
* show cms blog posts in www
* remove contentlayer from www
* outputFileTracingExcludes
* update remotePatterns
* fetch cms posts server-side with revalidation
* add cms env vars to turbo.json
* add www env vars to turbo.json
* include cms posts in www sitemap
* add migration to remove image from cms post
* update cms meta image mapping in www
* add contentlayer2 to www
* remove authorURL from blog post meta
* latest blog posts in Developers dropdown menu
* parse blog slug in contentlayer
* change next config plugins order
* contentlayer build in www package.json
* contentlayer2
* contentlayer2 build on typecheck in www
* remove comment
* Update package-lock.json
* revert npm package version
* Update package-lock.json
---------
Co-authored-by: Jonathan Summers-Muir <MildTomato@users.noreply.github.com>
Charis