Vercel currently ignores any pre-compressed assets that are uploaded, for example /_framework/dotnet.native.wasm, compressed to /_framework/dotnet.native.wasm.br, and appears to retrieve the uncompressed file, and do its own compression before serving it to the client. This is inefficient, as I compress my assets with a higher level of compression at build time. I believe the behaviour is the same for gzip, however I am most concerned with br (brotli).

Note that if you call or navigate to /_framework/dotnet.native.wasm.br directly in a browser or postman, you do get the original br compressed file (validated by file size and hash).

Current: Retrieves uncompressed file and performs own compression before serving. Expected: Retrieves a pre-compressed file based on the incoming Accept-Encoding header, and returns that directly, without doing any of its own compression.

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Deployment URL or Custom Domain: https://matthew-parker-dev-blazor.vercel.app/
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Environment (local, preview, production): production
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Project Framework: Blazor Wasm
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Build Settings:
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  Framework Preset: Other
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  Build Command (if not default): chmod +x build-cloudflare.sh && ./build-cloudflare.sh
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  Output Directory (if not default): output/wwwroot
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  Install Command (if not default):
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Node/Runtime Version: 20.x
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Package Manager: N/A
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Relevant Packages: N/A