🐛 BUG: npm create cloudflare (C3) fails with astro framework - error adding type declarations to src/env.d.ts

[jldec]

Which Cloudflare product(s) does this pertain to?

C3 (npm create cloudflare)

What version(s) of the tool(s) are you using?

c3 v2.33.1, create-astro@4.10.0

What version of Node are you using?

22.11.0

What operating system and version are you using?

macOS Sequoia v15.1.1

Describe the Bug

Observed behavior

c3 exits with a fatal error when it tries to add type declarations in src/env.d.ts
This file appear to have been removed (made optional).

Expected behavior

c3 should not error out with astro projects.

Steps to reproduce

• npm create cloudflare (with or without --experimental, both fail in the same way)
• select "Framework Starter", and then "Astro"
• select "Include sample files" (or "Blog" or "Empty")
• select "Yes" for TypeScript (the default)

Please provide a link to a minimal reproduction

No response

Please provide any relevant error logs

Updating configuration in astro.config.mjs
Adding type declarations in src/env.d.ts
ERROR  Error: Error parsing file: src/env.d.ts