Svelte

Svelte Expert

Complete Svelte knowledge base combining official documentation and real-world patterns.

When to Use

• Building Svelte components
• Working with Svelte reactivity (runes)
• State management with stores
• Animations and transitions
• Svelte component architecture used inside SvelteKit apps (component layer only)
• Component composition patterns

Quick Reference

Svelte 5 Runes

<script>
  let count = $state(0);
  double = $derived(count * 2);

  function increment() {
    count += 1;
  }
</script>

<button
  {count} x 2 = {double}
</button>

Stores

import { writable } from "svelte/store";
const count = writable(0);

Props

<script>
  let { name = 'World', ...props } = $props();
</script>

References

• references/documentation/runes_state.md - Reactivity with $state
• references/documentation/runes_derived.md - Derived values with $derived
• references/documentation/runes_effect.md - Side effects with $effect
• references/documentation/stores.md - Svelte stores
• references/documentation/svelte_files.md - Component patterns and file conventions
• references/documentation/styles.md - Styling and transitions
• references/documentation/lifecycle_hooks.md - Lifecycle patterns
• references/documentation/other.md - Common issues and advanced topics

Related Skills

• svelte-kit (full-stack framework)
• svelte-cli (project scaffolding)
• svelte-mcp (MCP server)
• tailwind (styling)