Svelte / SvelteKit

This skill covers Svelte and SvelteKit development with deep knowledge of SSR, SSG, and modern web patterns, including the Svelte 5 runes system and how it differs from legacy Svelte 4 reactivity.

Core Principles

• Write concise, technical components with accurate SvelteKit examples
• Emphasize SSR/SSG capabilities and performance optimization
• Use TypeScript with proper naming conventions
• Prioritize minimal client-side JavaScript through server-side rendering
• Follow functional and declarative programming patterns

Svelte 5 Runes

Svelte 5 introduces runes — compiler-level primitives that make reactivity explicit, replacing Svelte 4's implicit let/$: reactivity.