Skills by biomejs
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biome-developer
Apache-2.0· ★ 25,418 · updated 2026-07-27 — This skill guides developers working on Biome's codebase through essential patterns and pitfalls. It covers AST and syntax node navigation, efficient string extraction without…
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changeset
Apache-2.0· ★ 25,418 · updated 2026-07-27 — This skill walks you through building changesets for Biome pull requests that introduce user-facing changes—bug fixes, new features, rule updates, or formatter tweaks. It covers…
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diagnostics-development
Apache-2.0· ★ 25,418 · updated 2026-07-27 — Build effective error messages, warnings, and hints for Biome lint rules using the Diagnostic trait and advice system. Learn to craft messages that explain what went wrong, why it…
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doc-comments
Apache-2.0· ★ 25,418 · updated 2026-07-27 — This skill establishes documentation standards for Biome developers writing comments and rustdoc in the codebase. It distinguishes three comment types—module docs for explanation,…
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eslint-migrate-options
Apache-2.0· ★ 25,418 · updated 2026-07-27 — This skill guides you through building option migrators for the `biome migrate eslint` command, preserving ESLint rule configurations beyond severity alone. Learn to model ESLint…
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formatter-development
Apache-2.0· ★ 25,418 · updated 2026-07-27 — Learn to implement and modify Biome's formatters using its trait-based IR system. This skill covers generating formatter boilerplate, writing FormatNodeRule implementations,…
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lint-rule-development
Apache-2.0· ★ 25,418 · updated 2026-07-27 — This skill guides you through building new lint rules and assist actions for Biome. It covers rule scaffolding across multiple languages, implementation patterns with semantic…
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parser-development
Apache-2.0· ★ 25,418 · updated 2026-07-27 — This skill teaches you how to add parsing support for new languages to Biome by authoring grammars in ungrammar format, implementing lexers and token sources, and writing parse…
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pull-request
Apache-2.0· ★ 25,418 · updated 2026-07-27 — This skill walks you through the pull request workflow for the Biome project, covering branch selection based on change type, conventional commit title formatting, and the…
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testing-codegen
Apache-2.0· ★ 25,418 · updated 2026-07-27 — testing-codegen guides you through snapshot testing with insta and code generation for the Biome codebase. It covers running tests for specific crates, fast iteration with…
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type-inference
Apache-2.0· ★ 25,418 · updated 2026-07-27 — This skill teaches you how to work with Biome's type inference engine and module graph architecture for building type-aware lint rules. It covers the three-phase type resolution…