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styled-jsx-component

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Create or refactor a React functional component styled with styled-jsx (<style jsx>). Use for scoped component styles, including variants, theming via CSS variables, and accessible UI patterns.

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/design/styled-jsx-component/SKILL.md

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styled-jsx Component Skill (React Functional Components)

You are creating or refactoring a React FUNCTIONAL component that uses styled-jsx for styling.

Inputs

  • $ARGUMENTS may include a component name and a short intent/variant description.

Non-negotiables

  1. Functional component only (no class components).
  2. Prefer semantic HTML and accessibility by default:
    • Correct element choice (button/a/input/etc)
    • Keyboard support
    • aria-* only when needed
  3. Use styled-jsx {...} for component-scoped CSS.
  4. Keep styling maintainable:
    • Prefer CSS variables for theming/tokens
    • Avoid overly-specific selectors
    • Avoid styling through DOM structure that will change easily
  5. Variants:
    • Prefer a single "variant" prop (string union) over many booleans.
    • Use data attributes (e.g., data-variant) for styling hooks.
  6. Dynamic styling:
    • Prefer className toggling or CSS variables for runtime values.
    • Use template literal interpolation only when it’s necessary and safe.
  7. SSR/Next.js considerations:
    • styled-jsx is SSR-compatible; do not use browser-only APIs during render.

Output expectations

  • Create/modify files per template.md.
  • Provide:
    1. Component implementation
    2. Minimal test (render + primary interaction + a11y)
    3. Storybook story (basic variants)
    4. Short usage snippet

Best-practice patterns to apply

  • Tokens:
    • Use CSS vars like --color-fg, --color-bg, --radius, --space-2.
    • Provide sensible defaults in :root only when asked; otherwise keep tokens local to the component with fallback values.
  • Prefer:
    • :global(...) only for one-off escape hatches
    • data-* attributes for styling states (data-state, data-variant)
  • Avoid:
    • Global leakage
    • Deep descendant styling
    • Interpolating untrusted strings into CSS

Use the accompanying template.md as the default structure; deviate only when the component needs a different intrinsic element type or ref pattern.