Building — Calm Systems with Svelte 5

01
Routes Are State Boundaries File-based routing isn't just organization—it's architecture. Each route owns its data, and that's a feature.

6 min concept
02
Load Functions Are Pure Load functions fetch data. The UI derives from it. This separation keeps your code predictable and testable.

6 min concept
03
Forms and Progressive Enhancement SvelteKit forms work without JavaScript. With use:enhance, they become instant. Learn to build forms that never break.

7 min tutorial
04
When to Refresh Data SvelteKit's invalidation system lets you control exactly when data refreshes. Learn to use invalidate() and depends() for predictable updates.

6 min reference
05
Component Communication Props down, callbacks up. Plus $bindable for forms and snippets for flexible content. Everything you need for component APIs.

7 min reference