Content-Type wrong for .data files

[stefnotch]

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Describe the bug

I have some emscripten compiled files in my public directory. Emscripten generates somename.data files and expects them to have the content type application/octet-stream.

Expected
Content-Type: application/octet-stream

Actual
Vite serves it as application/javascript

Vite also complains about it in the logs

[vite] failed to parse /public/pyodide/pyodide.asm.data for import rewrite.
If you are using JSX, make sure to named the file with the .jsx extension.

Reproduction

1. Clone or download https://github.com/stefnotch/quantum-sheet/tree/e5075aad4bf4a14c772e369e7c14c284b202b38b
2. npm install
3. npm run download:pyodide to download and unpack pyodide.
4. npm run dev to start the development server

System Info

• required vite version: 0.20.8
• required Operating System: Windows 10
• required Node version: v14.4.0
• Optional:
  • npm/yarn version
  • Installed vue version (from yarn.lock or package-lock.json)
  • Installed @vue/compiler-sfc version

Logs (Optional if provided reproduction)

1. Run vite or vite build with the --debug flag.
2. Provide the error log here.