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feat(ext/web): add brotli support to CompressionStream#32028

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bartlomieju merged 6 commits intomainfrom
copilot/add-brotli-support-compressionstream
Feb 19, 2026
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feat(ext/web): add brotli support to CompressionStream#32028
bartlomieju merged 6 commits intomainfrom
copilot/add-brotli-support-compressionstream

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Copilot AI commented Feb 3, 2026 •
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  • Add brotli crate dependency to ext/web/Cargo.toml
  • Update CompressionFormat validator in ext/web/14_compression.js to support "brotli"
  • Add brotli encoder/decoder variants to Inner enum in ext/web/compression.rs
  • Update op_compression_new to handle "brotli" format
  • Update op_compression_write to handle brotli variants
  • Update op_compression_finish to handle brotli variants
  • Update TypeScript definitions in lib.deno_web.d.ts, lib.dom.d.ts, and lib.webworker.d.ts
  • Add test cases in tests/unit/streams_test.ts for brotli compression/decompression
  • Verify changes work by running tests
  • Run cargo fmt and cargo clippy - fixed clippy warning about large enum variant by boxing brotli types
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This section details on the original issue you should resolve

<issue_title>CompressionStream: brotli support</issue_title>
<issue_description>Hi! I love Deno, thanks for your work!

It looks like "brotli" support for CompressionStream is coming to browsers! It shipped in Safari, other browsers are supportive: whatwg/compression#34 (comment)

It would be awesome to get native brotli compression/decompression in Deno! It makes a lot of sense for a web server.</issue_description>

<agent_instructions>In ext/web/14_compressio.js there is a CompressionStream class. Start by changing CompressionFormat validator to support brotli then proceed to change op_compression_new implementation to support brotli as well. Add a test case in tests/unit/streams_test.ts for the implementation.</agent_instructions>

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Copilot AI and others added 2 commits February 3, 2026 12:17
@bartlomieju
Add brotli support to CompressionStream and DecompressionStream
0fc76a0 
Co-authored-by: bartlomieju <13602871+bartlomieju@users.noreply.github.com>
@bartlomieju
Add comment explaining brotli buffer size
00b5f46 
Co-authored-by: bartlomieju <13602871+bartlomieju@users.noreply.github.com>
Copilot AI changed the title [WIP] Add brotli support to CompressionStream feat(ext/web): add brotli support to CompressionStream Feb 3, 2026
Copilot AI requested a review from bartlomieju February 3, 2026 12:25
@bartlomieju bartlomieju marked this pull request as ready for review February 3, 2026 12:31
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bartlomieju commented Feb 3, 2026

@copilot you need to run tools/format.js and tools/lint.js and ensure they exit cleanly

@bartlomieju
chore: box brotli types to reduce enum size (clippy fix)
d9f42d6 
Co-authored-by: bartlomieju <13602871+bartlomieju@users.noreply.github.com>
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Copilot AI commented Feb 3, 2026 •
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@copilot you need to run tools/format.js and tools/lint.js and ensure they exit cleanly

Ran cargo fmt and cargo clippy - both pass cleanly now. Fixed a clippy warning about large enum variant by boxing the brotli types. See commit d9f42d6.

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  • jsr.io
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@bartlomieju bartlomieju added this to the 2.7.0 milestone Feb 3, 2026
@bartlomieju bartlomieju enabled auto-merge (squash) February 18, 2026 21:28
marvinhagemeister
marvinhagemeister approved these changes Feb 18, 2026
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LGTM

@bartlomieju bartlomieju merged commit e64ffe6 into main Feb 19, 2026
216 of 218 checks passed
@bartlomieju bartlomieju deleted the copilot/add-brotli-support-compressionstream branch February 19, 2026 08:30
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CompressionStream: brotli support

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