| name | new-component |
| description | Scaffold a new React component with optional Storybook story and Vitest test files. Use this skill whenever the user asks to "create a component", "make a button", "scaffold a card", "add a new component", or asks for a new file under `app/components/` following the project's component pattern (PascalCase folder, index.tsx, tests/). |
| model | haiku |
new-component
Trigger: user asks to create a component, scaffold a card, etc.
Workflow
- Confirm with user via AskUserQuestion: name (PascalCase), parent dir (default
app/components), props (or "none"), story (default yes).
- Run:
.gaia/cli/gaia scaffold component <Name> [flags]
- Verify:
pnpm typecheck clean. Open the new files, sanity-check the props.
- If user wants more (variants, conditional rendering, complex children): edit the generated files. The skill does not regenerate.
Flags
--no-story, skip Storybook story--parent <dir>, non-default parent dir (e.g. app/components/Form)--props "a:string,b:number", typed props rendered as a Props alias and destructured in the signature. Only top-level commas separate props, so comma-bearing types (Record<K, V>, (a, b) => void, tuples) are supported within a single entry.
Accessibility assertion
Scaffolded test files include a test('a11y') block that calls expectNoA11yViolations from test/a11y.ts (axe-core, full default ruleset, no tag filter). Because axe-core is incompatible with the project's default happy-dom test environment (Node.prototype.isConnected is getter-only, capricorn86/happy-dom#978), the scaffolder writes // @vitest-environment jsdom as the first line of the test file. The directive is required: expectNoA11yViolations throws an actionable error if it detects a non-jsdom runtime. Don't strip the directive when editing the file.
The a11y block renders a non-degenerate instance so it can fail against a real violation rather than passing vacuously against an empty DOM. With --props, the scaffolder fills representative values (title="title", count={0}, …) at the render site (in the story Default when a story exists, otherwise inline in the test). Replace the placeholder values with realistic ones. The render-only axe pass is a starting point, not complete a11y evidence: add interaction-state and prop-variant assertions as the component grows.
