Dawn release v20251218.170355 at revision https://dawn.googlesource.com/dawn/+log/e78ae5f0450857eb95217ef469fbb173a3cf103d.
Built/tested with emsdk release 4.0.20.

Use either the emdawnwebgpu-*.remoteport.py file (Emscripten 4.0.10+) or the emdawnwebgpu_pkg-*.zip.
For full instructions, see the README which is included in both files.