Svelte 5 runes, snippets, SvelteKit patterns, and modern best practices for TypeScript and component development. Use when writing, reviewing, or refactoring Svelte 5 components and SvelteKit applications. Triggers on: Svelte components, runes ($state, $derived, $effect, $props, $bindable, $inspect), snippets ({#snippet}, {@render}), event handling, SvelteKit data loading, form actions, Svelte 4 to Svelte 5 migration, store to rune migration, slots to snippets migration, TypeScript props typing, generic components, SSR state isolation, performance optimization, or component testing.
インストールする前に、エージェントに与えられる指示の中身を確認できます。
| Topic | When to Use | Reference |
|---|---|---|
| Runes | $state, $derived, $effect, $props, $bindable, $inspect | runes.md |
| Snippets | Replacing slots, {#snippet}, {@render} | snippets.md |
| Events | onclick handlers, callback props, context API | events.md |
| TypeScript | Props typing, generic components | typescript.md |
| Migration | Svelte 4 to 5, stores to runes | migration.md |
| SvelteKit | Load functions, form actions, SSR, page typing | sveltekit.md |
| Performance | Universal reactivity, avoiding over-reactivity, streaming | performance.md |
<script>
let count = $state(0); // Reactive state
let doubled = $derived(count * 2); // Computed value
</script>
<script>
let { name, count = 0 } = $props();
let { value = $bindable() } = $props(); // Two-way binding
</script>
<script>
let { children, header } = $props();
</script>
{@render header?.()}
{@render children()}
<!-- Svelte 5: use onclick, not on:click -->
<button onclick={() => count++}>Click</button>
<script>
let { onclick } = $props();
</script>
<button onclick={() => onclick?.({ data })}>Click</button>
let without $state - Variables are not reactive without $state()$effect for derived values - Use $derived insteadon:click syntax - Use onclick in Svelte 5createEventDispatcher - Use callback props instead<slot> - Use snippets with {@render}$bindable() - Required for bind: to workPromise.all for parallel requestsまだレビューはありません。使ってみた感想をお寄せください。
概要と使いどころ
Audit and improve web accessibility following WCAG 2.2 guidelines. Use when asked to "improve accessibility", "a11y audit", "WCAG compliance", "screen reader support", "keyboard navigation", or "make accessible".
日本語の概要は準備中です。原文の説明を表示しています。
Use when building, running, testing, or bundling JavaScript/TypeScript applications. Reach for Bun when you need to execute scripts, manage packages, run tests, or bundle code for production. Bun is a drop-in replacement for Node.js with integrated package manager, test runner, and bundler.
日本語の概要は準備中です。原文の説明を表示しています。
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.
日本語の概要は準備中です。原文の説明を表示しています。
Use when writing Playwright tests, fixing flaky tests, debugging failures, implementing Page Object Model, configuring CI/CD, optimizing performance, mocking APIs, handling authentication or OAuth, testing accessibility (axe-core), file uploads/downloads, date/time mocking, WebSockets, geolocation, permissions, multi-tab/popup flows, mobile/responsive layouts, touch gestures, GraphQL, error handling, offline mode, multi-user collaboration, third-party services (payments, email verification), console error monitoring, global setup/teardown, test annotations (skip, fixme, slow), test tags (@smoke, @fast, @critical, filtering with --grep), project dependencies, security testing (XSS, CSRF, auth), performance budgets (Web Vitals, Lighthouse), iframes, component testing, canvas/WebGL, service workers/PWA, test coverage, i18n/localization, Electron apps, or browser extension testing. Covers E2E, component, API, visual, accessibility, security, Electron, and extension testing.
日本語の概要は準備中です。原文の説明を表示しています。
CLI tools for Svelte 5 documentation lookup and code analysis. MUST be used whenever creating, editing or analyzing any Svelte component (.svelte) or Svelte module (.svelte.ts/.svelte.js). If possible, this skill should be executed within the svelte-file-editor agent for optimal results.
日本語の概要は準備中です。原文の説明を表示しています。
Provides comprehensive Tailwind CSS utility-first styling patterns including responsive design, layout utilities, flexbox, grid, spacing, typography, colors, and modern CSS best practices. Use when styling React/Vue/Svelte components, building responsive layouts, implementing design systems, or optimizing CSS workflow.
日本語の概要は準備中です。原文の説明を表示しています。