Duplicated brackets are generated in data collections.

[syhily]

Astro Info

Astro                    v4.10.3
Node                     v22.3.0
System                   macOS (arm64)
Package Manager          npm
Output                   server
Adapter                  @astrojs/node
Integrations             @astrojs/mdx

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

No response

Describe the Bug

The latest release astro doesn't generate the JSON schema correctly. A duplicated }; is introduced for each yaml data file. I think this bug is introduced by the #11249

What's the expected result?

Valid schema json.

Link to Minimal Reproducible Example

https://github.com/syhily/yufan.me

Participation

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

[syhily]

IIUC, the line in the belowing PR shouldn't be moved into the for-loop. It should be kept in the original place.

https://github.com/withastro/astro/pull/11249/files#diff-7e9b96084af9c6f79604dd4aaba392dc11ebb3e64f5a47f2d5c1ce67cb8abb79R452

[markgaze]

Apologies, this was my fault! Like I said on the PR comment, I'll have a look to see if I can add some tests around this because I made an assumption that the tests passing meant everything was fine with the types but that wasn't the case, unfortunately!