biomejs/biome - CodSpeed

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Performance History

Latest Results

perf(rowan): share elements across the builds of a node cache A node cache now keeps its arena across builds, so a build reuses the elements of earlier ones again, as it did before arenas. The cached benchmarks, like the Tailwind parser's, and reparses with a kept cache had lost that sharing. Handles to arena elements now always count a reference, from any thread, including while a build is running. This is what makes it safe for a build to allocate in an arena whose earlier trees are still in use. A build's own handles are the exception: the cache makes them from pointers instead of cloning them, and each one moves into an element, is discarded, or becomes the counted root. Factories can drop the children they're given, so the factory wrappers discard handles to elements of the running build instead of dropping them. Clones and drops no longer read the arena's open flag, which also cuts the cost of edits, like the formatter's rewrites. The cache starts a new arena once its arena holds twice the bytes of its first build and more than 1 MiB, so that elements earlier builds made don't accumulate without bound. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

dyc3/perf-rowan-green-arena-prototype

1 hour ago

[autofix.ci] apply automated fixes

feat/mdx-js-embedding

5 hours ago

feat(analyze): lint the JavaScript of MDX documents regardless of analyzeEmbeds MDX compiles the JavaScript of its constructs into the document's module, so a mistake there breaks the document, unlike the examples in code blocks. The ESM blocks, expressions, and JSX tags of an MDX file are now analyzed even when `markdown.analyzeEmbeds` is disabled. Code blocks still follow the option.

feat/mdx-analyze

5 hours ago

feat(service): format the JavaScript of MDX documents regardless of formatEmbeds MDX compiles the JavaScript of its constructs into the document's module, so it belongs to the document rather than to an embedded example. The ESM blocks, expressions, and JSX tags of an MDX file are now formatted even when `markdown.formatter.formatEmbeds` is disabled. Code blocks still follow the option.

feat/mdx-service

5 hours ago

test(markdown_formatter): cover MDX constructs with every prose wrap mode

feat/mdx-formatter

5 hours ago

test(markdown_parser): cover an MDX flow line at the end of a list

feat/mdx-parser-jsx-tags

5 hours ago

refactor(js_extent): binary search expression keywords and classify word bytes with lookup_byte

refactor/js-extent

5 hours ago

refactor(markdown_parser): leave the line ending of MDX blocks to the enclosing block list

feat/mdx-parser-esm-expressions

5 hours ago

Latest Branches

+10%

perf(rowan): allocate the green trees of a build in an arena#12940

6 hours ago

f4b1417

dyc3/perf-rowan-green-arena-prototype

+7%

feat(js_parser): parse MDX snippets#12833

3 days ago

92c02e2

feat/mdx-js-embedding

-33%

feat(analyze): lint MDX documents#12836

10 hours ago

850358b

feat/mdx-analyze

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