General
PromptBeginner5 minmarkdown
- Break down PostCSS traversal logic into small
testable utility functions.
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General
PromptBeginner5 minmarkdown
- **Error Handling:** When parsing weird syntax
fail gracefully. Do not crash the linter process.
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General
PromptBeginner5 minmarkdown
- **Utility Usage:** Before writing a helper function
check whether the standard library
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General
PromptBeginner5 minmarkdown
- **Custom Syntax Awareness:** When a rule depends on syntax that does not exist in plain CSS
scope it carefully and document the expected `customSyntax` or file context.
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General
PromptBeginner5 minmarkdown
- **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 minmarkdown
3. Edge cases (nested rules
comments
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General
PromptBeginner5 minmarkdown
- 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
PromptBeginner5 minmarkdown
- **AST Traversal:** Use the narrowest viable PostCSS walk (`walkDecls`
`walkRules`
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General
PromptBeginner5 minmarkdown
- **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 minmarkdown
- `dist/`
coverage outputs
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General
PromptBeginner5 minmarkdown
- If your change touches one of those surfaces
think beyond only unit tests.
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General
PromptBeginner5 minmarkdown
- If the repository syncs Node version files
peer dependency ranges
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General
PromptBeginner5 minmarkdown
- Beyond ESLint and TypeScript
many plugin repos also enforce:
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General
PromptBeginner5 minmarkdown
- In repositories like this one
sync/validation flows may include:
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General
PromptBeginner5 minmarkdown
- In repositories like this template
that often includes:
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General
PromptBeginner5 minmarkdown
- Before changing a config file
check whether there is already a matching script
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General
PromptBeginner5 minmarkdown
- When changing package exports
entrypoints
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General
PromptBeginner5 minmarkdown
- **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
PromptBeginner5 minmarkdown
- **Utilities:** Prefer the standard library
existing repository helpers
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General
PromptBeginner5 minmarkdown
## Repository Tooling
Quality Gates
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General
PromptBeginner5 minmarkdown
- **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 minmarkdown
- Your main goal is to build a Stylelint plugin that is not just functional
but performant
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General
PromptBeginner5 minmarkdown
- **Testing:** Vitest v4+
direct `stylelint.lint(...)` integration tests
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Coding & Debugging
PromptBeginner5 minmarkdown
- **Modern TypeScript:** TypeScript v5.9+
focusing on compiler APIs
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