Using Svelte 5 Runes for Fine‑Grained Reactive State
Learn how Svelte 5’s $state, $derived, and $effect runes replace the $: label syntax, enable module‑scope reactive state, and reduce unnecessary re‑renders in large UIs.
Loading…
ReadMeFeed / Community knowledge
Svelte
Real questions. Useful conversations. Find the people who know your stack.
Svelte
Frameworks & web · #svelte
Choosing Between Svelte Writable, Readable, and Derived Stores
Learn when to use each Svelte store type, see a comparison table, and follow a concrete example that shows how to create, update, and validate them.
Using Svelte Reactive Statements for a Debounced Search Input
Learn how Svelte’s reactive statements ($:) enable automatic, zero‑overhead side‑effects and see a concrete debounced search example that reduces unnecessary API calls.
Designing State Boundaries with Svelte Stores: An Architecture Note
An architecture note on Svelte stores: when shared state justifies a store, the read-only-export pattern that enforces a single write boundary, SSR caveats, and the leak and reactivity failure modes to check for.
Svelte 5 Runes Explained: Migrating from $: Reactive Statements to $state, $derived, and $effect
Svelte 5 replaces implicit $: reactive statements with explicit runes. Learn when to use $state, $derived, and $effect, with a worked migration and the mistakes that cause loops.
Designing Global State with Svelte Derived Stores: Requirements, Boundaries, and Checks
Learn how to use Svelte derived stores for global state: requirements, minimal design, data boundaries, operational checks, failure modes, and when to revisit the design.
Diagnosing Svelte UI Not Updating After State Changes
When a Svelte variable changes but the DOM stays static, the issue is usually missing assignment-based invalidation. Learn how to diagnose and fix it in Svelte 3/4 and note differences in Svelte 5.
Svelte Reactive Statements: Stop Manually Syncing Derived Values
Svelte's $: reactive statements turn derived state from an update-everywhere liability into a declare-once guarantee. Here's how they work, a working counter example, and the performance trade-off to watch.
Managing Component State with Svelte Context API
Learn how to use Svelte's Context API to eliminate prop drilling. This guide covers reactive patterns using stores, Symbol-based keys, and common pitfalls like initialization timing.