Unknown Content Collection Error when parent directory starts with an underscore

[justtobetrendy]

What version of astro are you using?

2.0.14

Are you using an SSR adapter? If so, which one?

None

What package manager are you using?

npm

What operating system are you using?

Mac

Describe the Bug

Hello,

I was experimenting with Astro and was constantly getting an Unknown Content Collection Error when accessing the /blog URL of the blog template site.

Steps to reproduce

1. mkdir _sandbox, cd _sandbox (the underscore is important)
2. npm create astro@latest, create it in ./blog, select Use blog template, install dependencies, initialize git repo and select Strict TypeScript configuration.
3. cd blog
4. npm run dev
5. navigate to http://localhost:3000/blog

What I noticed was:

1. the type definition were not generated in ./astro when running npm run dev or npm run astro sync,
2. this works in astro@2.0.6 but stopped working in astro@2.0.7,
3. removing the underscore from the parent directory (create it in sandbox directory rather than _sandbox) resolves the issue in astro@2.0.14.

Note that I can't reproduce this on stackblitz since I do not have control over the parent directory.

Link to Minimal Reproducible Example

https://stackblitz.com/edit/withastro-astro-2gphvs?file=package.json,src%2Fcontent%2Fconfig.ts,.gitignore

Participation

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