svelte.config.ts not recognized

[notramo]

Describe the bug

Bun can natively import TS files without any plugin needed. However, renaming svelte.config.js to svelte.config.ts makes the build (or dev server) fail.

Reproduction

mv svelte.config.js svelte.config.ts

Logs

The logs contain import failures mentioning my project files which I don't disclose (but does not mention import failure of `svelte.config.ts`).

System Info

Running using Bun in Docker.

  System:
    OS: Linux 6.11 Debian GNU/Linux 11 (bullseye) 11 (bullseye)
    Container: Yes
    Shell: 5.1.4 - /bin/bash
  Binaries:
    bun: 1.1.34 - /tmp/bun-node-5e5e7c60f/bun
  npmPackages:
    @sveltejs/adapter-node: ^5.2.8 => 5.2.9
    @sveltejs/enhanced-img: ^0.3.9 => 0.3.9
    @sveltejs/kit: ^2.7.2 => 2.7.2
    @sveltejs/vite-plugin-svelte: ^4.0.0 => 4.0.0
    svelte: ^5.0.5 => 5.0.5
    vite: ^5.4.9 => 5.4.9

Severity

annoyance

Additional Information

No response

[polyzen]

Duplicate of #2576