Load Function + TypeScript Only
Server-side rendering with compile-time type checking. Smallest bundle size, no runtime validation overhead.
Understanding TypeScript-Only Validation
Learn when compile-time type checking is sufficient and how it eliminates runtime overhead.
Load Function + TypeScript Only
Quick Start with CLI
Generate this entire pattern automatically:
During the interactive prompts, select Load function strategy and TypeScript only validator, then define your fields (title, description).
How It Works
- Most Svelte-native approach - Uses standard SvelteKit
load()functions to pass data from page to layout - Server-side rendered - Data is available immediately on page load, no client-side fetching
- TypeScript only - Compile-time type checking with no runtime validation overhead (0kb validator bundle)
- SEO-friendly - Content is in the initial HTML response for search engines
- Zero layout shift - No hydration flicker or content jumping
- Type-safe - Full TypeScript support with interface definitions
Code Examples (used on this page)
1. Define your type with a TypeScript interface:
2. Return region data from your load function:
3. Consume the region in your +layout.svelte file (no schema prop needed for TypeScript-only):
Note: The @const typedData = data as unknown as ArticleHeaderData line narrows the type from Record<string, unknown> to your interface type for full TypeScript autocomplete and type safety. Learn more about typing snippets.
4. Or, abstract the region to its own component for better organization (this is how our CLI generates regions):
5. Then your +layout.svelte stays clean and organized — the region is now a self-contained component with its own schema, validation, and UI.