URL is considered invalid in `experimental_getFontFileURL()` when using Cloudflare adapter

[azrdn]

Astro Info

Astro                    v7.2.2
Node                     v26.3.0
System                   Linux (x64)
Package Manager          pnpm
Output                   static
Adapter                  @astrojs/cloudflare
Integrations             none

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

Not applicable

Describe the Bug

When experimental_getFontFileURL() is used while using the cloudflare adapter, vite errors with:

14:03:33 [ERROR] [vite] Internal server error: The `"/_astro/fonts/font-inter-400-italic-latin-863c6d4ebf55aa09.woff2"` URL passed to the `experimental_getFontFileURL()` function is invalid.
      at getFontFileURL (/home/azrd/Repositories/font_repro/node_modules/.pnpm/astro@7.2.2_@emnapi+core@1.11.1_@emnapi+runtime@1.11.3/node_modules/astro/dist/assets/fonts/core/create-get-font-file-url.js:11:13)
      at Module.GET (/home/azrd/Repositories/font_repro/src/pages/og.png.ts:7:20)
      at renderEndpoint (/home/azrd/Repositories/font_repro/node_modules/.pnpm/astro@7.2.2_@emnapi+core@1.11.1_@emnapi+runtime@1.11.3/node_modules/astro/dist/runtime/server/endpoint.js:37:32)
      at PagesHandler.handle (/home/azrd/Repositories/font_repro/node_modules/.pnpm/astro@7.2.2_@emnapi+core@1.11.1_@emnapi+runtime@1.11.3/node_modules/astro/dist/core/pages/handler.js:23:26)

This was used in a astro endpoint to generate og images (src/pages/og.png.ts), it breaks recently in new Astro version (idk which version)

What's the expected result?

Font url is is generated without errors

Link to Minimal Reproducible Example

https://github.com/azrdn/astro_font_bug

Participation

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