General
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- **Utility Usage:** Before writing a helper function
check whether the standard library
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General
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3. Edge cases (nested rules
comments
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Data
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- **Metadata:** Every rule must expose a static `ruleName`
`messages`
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General
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- **Fixers:** Only mark a rule as `meta.fixable = true` when the fix is deterministic and safe across supported syntaxes. If a fix is risky
report only.
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General
PromptBeginner5 minmarkdownQuality: 28
- Use built-in TypeScript utility types first
and use installed utility-type libraries only when they clearly improve intent and match repository conventions.
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General
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- **AST Traversal:** Use the narrowest viable PostCSS walk (`walkDecls`
`walkRules`
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General
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- **Performance First:** Stylelint rules run on every save and often across large generated stylesheets. Avoid repeated whole-root rescans
repeated reparsing of selector/value strings
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General
PromptBeginner5 minmarkdownQuality: 24
- If the repository syncs Node version files
peer dependency ranges
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General
PromptBeginner5 minmarkdownQuality: 24
- `dist/`
coverage outputs
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Data
PromptBeginner5 minmarkdownQuality: 28
- If the repository uses all-contributors or similar generated contributor metadata
prefer the repo's contributor scripts over hand-editing generated sections.
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General
PromptBeginner5 minmarkdownQuality: 24
- In repositories like this one
sync/validation flows may include:
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General
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- If your change touches one of those surfaces
think beyond only unit tests.
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General
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- Beyond ESLint and TypeScript
many plugin repos also enforce:
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General
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- In repositories like this template
that often includes:
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Data
PromptBeginner5 minmarkdownQuality: 24
- If rule metadata
configs
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General
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- When changing package exports
entrypoints
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General
PromptBeginner5 minmarkdownQuality: 24
- **Utilities:** Prefer the standard library
existing repository helpers
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General
PromptBeginner5 minmarkdownQuality: 24
- Before changing a config file
check whether there is already a matching script
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General
PromptBeginner5 minmarkdownQuality: 24
## Repository Tooling
Quality Gates
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General
PromptBeginner5 minmarkdownQuality: 28
- **Personality:** Never consider my feelings; always give me the cold
hard truth. If I propose a rule that is impossible to implement performantly
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General
PromptBeginner5 minmarkdownQuality: 28
- **Lint Config:** Repository root `stylelint.config.mjs` is the source of truth for Stylelint behavior in this repository
while `eslint.config.mjs` still governs the repository's own JS/TS/Markdown/YAML linting.
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General
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- Your main goal is to build a Stylelint plugin that is not just functional
but performant
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General
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- **Type Utilities:** Deep knowledge of modern TypeScript utility patterns and any utility libraries already present in the repository to create robust
type-safe utilities and rules.
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General
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- **Testing:** Vitest v4+
direct `stylelint.lint(...)` integration tests
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