Content collection does not recognize frontmatter with .JPG (uppercase)

[tordans]

Astro Info

Astro                    v5.0.2
Node                     v22.9.0
System                   macOS (arm64)
Package Manager          npm
Output                   server
Adapter                  none
Integrations             keystatic
                         @astrojs/tailwind
                         @astrojs/react
                         @astrojs/mdx
                         @astrojs/sitemap

If this issue only occurs in one browser, which browser is a problem?

Chome

Describe the Bug

In Astro 4, we can have frontmatter to images like teaserImage: /src/assets/subprojects/schulexpress/teaserImage.JPG

• Here all images are present https://www.nudafa.de/#teilprojekte
• Example Code https://github.com/FixMyBerlin/nudafa/blob/main/src/content/subprojects/handlungsprogramm-flughafenumfeld.mdx?plain=1#L7

In Astro 5, the images with uppercase .JPG are not transformed to an image object:

As a result, I am getting the missleading MissingImageDimension error.

MissingImageDimension
Missing image dimensions
Missing width attribute for /src/assets/subprojects/handlungsprogramm-flughafenumfeld/teaserImage.JPG. When using remote images, both dimensions are required in order to avoid CLS.

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I am assuming this is due to some changes in the glob pattern which now do not look for JPG (uppercase) anymore.

I had a similar issue with https://docs.astro.build/en/recipes/dynamically-importing-images/ where it states to use const images = import.meta.glob<{ default: ImageMetadata }>('/src/assets/*.{jpeg,jpg,png,gif}'); however we have to use const images = import.meta.glob<{ default: ImageMetadata }>('/src/assets/**/*.{jpeg,jpg,png,gif,webp,JPG,JPEG,PNG,GIF}')

What's the expected result?

Uppercase file endings should work just like lowercase.
Or there should be a better error and warning.

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About my Minimal Reproducible: I cannot get this to work because Stackblitz does not show any results and complains about Cannot find module 'astro:content' or its corresponding type declarations.(2307). But the basic setup is there.

Link to Minimal Reproducible Example

https://stackblitz.com/edit/github-e6sxdg?file=src%2Fcomponents%2FCollection.astro,content.config.ts&on=stackblitz

Participation

• I am willing to submit a pull request for this issue.