svelte5-best-practices

Guide Svelte 5 codebases with runes, Snippets, and SvelteKit patterns.

28|3|Updated Jan 15, 2026

Search Tags:#typescript #migration #svelte #runes #sveltekit #svelte5 #snippets

Ready to run

npx skills add https://github.com/Ketbome/hytalepanel --skill svelte5-best-practices

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Skill: svelte5-best-practices
Source: https://github.com/Ketbome/hytalepanel/tree/main/.agents/skills/svelte5-best-practices
Command: npx skills add https://github.com/Ketbome/hytalepanel --skill svelte5-best-practices

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Aligns teams around modern Svelte 5 patterns to reduce fragmentation, improve readability, and accelerate development by providing a practical guide to runes, Snippets, and SvelteKit patterns.

Core Features & Use Cases

Guidance on using runes such as $state, $derived, $effect, $props, $bindable, and $inspect for predictable, scalable reactivity.
Patterns for Snippets and slot-to-snippet migrations, including rendering with {@render} and typed component props.
SvelteKit patterns for load functions, SSR isolation, page data typing, and form actions to streamline end-to-end development.

Quick Start

Open a Svelte 5 project and apply the best practices described here to refactor components and improve maintainability.

Frequently Asked Questions about svelte5-best-practices

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I migrate Svelte components to runes in Svelte 5?▼

Migrate Svelte components to runes by replacing let statements with $state, computed values with $derived, and lifecycle hooks with $effect. This Skill provides actionable refactoring patterns for predictable reactivity and production-ready code.

What is the best way to type Svelte 5 component props with TypeScript?▼

Type Svelte 5 component props using the $props rune with TypeScript interfaces for strict typing. This Skill outlines patterns for defining props, utilizing $bindable, and ensuring type safety across your SvelteKit application.

How do slots migrate to Snippets in Svelte 5?▼

Slots migrate to Snippets in Svelte 5 by defining snippet blocks and rendering them with the {@render} tag. This Skill details slot-to-snippet migration patterns to improve component readability and maintainability.

How do I handle SSR isolation and load functions in SvelteKit?▼

Handle SSR isolation and load functions in SvelteKit by properly typing page data and isolating server-side logic. This Skill provides SvelteKit patterns for load functions, form actions, and SSR considerations to streamline development.

When should I use $effect vs $derived in Svelte 5?▼

Use $derived for computed state that synchronously updates, and $effect for side effects reacting to state changes. This Skill offers guidance on runes usage to ensure scalable reactivity and performance best practices.