[5.0.0-beta.2] Astro.request.headers warning when building app

[GiyoMoon]

Astro Info

Astro                    v5.0.0-beta.2
Node                     v22.8.0
System                   macOS (arm64)
Package Manager          pnpm
Output                   static
Adapter                  none
Integrations             none

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

No response

Describe the Bug

When building the page with pnpm build, every page prints this warning about astro headers:

 generating static routes 
10:22:48 ▶ src/pages/index.astro
10:22:48   └─ /index.html10:22:48 [WARN] `Astro.request.headers` is not available on prerendered pages. If you need access to request headers, make sure that the page is server rendered using `export const prerender = false;` or by setting `output` to `"server"` in your Astro config to make all your pages server rendered.
 (+3ms)
10:22:48 ✓ Completed in 6ms.

The warning doesn't appear when using 5.0.0-beta.1.

What's the expected result?

It shouldn't print this warning as I'm not accessing the headers in my code.

Link to Minimal Reproducible Example

https://github.com/GiyoMoon/astro-header-warning-v5-beta-2

Participation

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

[stefanprobst]

seeing the same warning with v4.15.9 (but not with 4.15.8)

[ematipico]

@GiyoMoon please provide a valid reproduction, the repository you provided still relies on v4

[github-actions]

Hello @GiyoMoon. Please provide a minimal reproduction using a GitHub repository or StackBlitz. Issues marked with needs repro will be closed if they have no activity within 3 days.

[GiyoMoon]

@ematipico wait huh? The repo has 5.0.0-beta.2 as it's dependency 🤔

[ematipico]

Weird. Anyway, I could reproduce and I sent a PR to fix the issue :)

[GiyoMoon]

awesome, thanks!

[ematipico]

Closed by #12070

[stefanprobst]

seeing the same warning with v4.15.9 (but not with 4.15.8)

this is when the following is set in astro.config.js:

security: {
	checkOrigin: true,
},

should i open a new issue?