Turbopack: importing `.avif` files fails with ‘AVIF image not supported’ warnings

Link to the code that reproduces this issue

https://codesandbox.io/p/devbox/sleepy-stitch-xhgd6r?file=%2Fapp%2Fpage.tsx

To Reproduce

1. Import an .avif file using a static import statement
2. Build with Turbopack -> warns about AVIF not being supported 💥

Current vs. Expected behavior

Currently, Turbopack shows a warning about AVIF imports:

$ pnpm build

> @ build /project/workspace
> next build

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▲ Next.js 16.0.2-canary.27 (Turbopack)

  Creating an optimized production build ...
Turbopack build encountered 1 warnings:
./app/a.avif
AVIF image not supported
This version of Turbopack does not support AVIF images, will emit without optimization or encoding

Import trace:
  Server Component:
    ./app/a.avif
    ./app/page.tsx


✓ Compiled successfully in 2.6s
✓ Finished TypeScript in 2.5s    
✓ Collecting page data using 3 workers in 399.3ms    
✓ Generating static pages using 3 workers (4/4) in 136.9ms
✓ Finalizing page optimization in 12.9ms    

Route (app)
┌ ○ /
└ ○ /_not-found


○  (Static)  prerendered as static content

webpack supports .avif imports

Expected: Turbopack supports AVIF

Provide environment information

Operating System:
  Platform: linux
  Arch: x64
  Version: #1 SMP PREEMPT_DYNAMIC Sun Aug  6 20:05:33 UTC 2023
  Available memory (MB): 8198
  Available CPU cores: 4
Binaries:
  Node: 20.12.1
  npm: 10.5.0
  Yarn: 1.22.19
  pnpm: 8.15.6
Relevant Packages:
  next: 16.0.2-canary.27 // Latest available version is detected (16.0.2-canary.27).
  eslint-config-next: N/A
  react: 19.2.0
  react-dom: 19.2.0
  typescript: 5.9.3
Next.js Config:
  output: N/A

Which area(s) are affected? (Select all that apply)

Turbopack

Which stage(s) are affected? (Select all that apply)

next build (local)

Additional context

--

Start with the linked CodeSandbox reproduction and run pnpm build to confirm the warning for the static .avif import in app/page.tsx. Trace the Turbopack handling that produces the “AVIF image not supported” warning. Done means a static AVIF import builds without that warning and behaves as expected, matching the stated webpack behavior.