StatelyPinia-inspired state for Svelte 5 and SvelteKit

Direct-mutation stores with SSR-safe managers and opt-in persistence, history, sync, and async orchestration.

Get started

API reference

GitHub

Familiar store ergonomics

Use `defineStore()` with option stores or setup stores while keeping direct mutation and Pinia-like helper names.

SSR-safe by default

Create request-scoped managers and provide them through Svelte context instead of leaking singleton state on the server.

Advanced flows stay opt-in

Add persistence, history, time travel, multi-tab sync, and async request control only where a store needs them.

What you get

Stately is a Svelte 5 state library for teams that want a small core runtime with explicit plugin-based features. It is designed for package consumers who want predictable store behavior in both SPA and SSR flows.

Start here

Read the guide for installation, store definitions, SSR patterns, plugins, and release workflows.
Jump to the API reference for the exported runtime surface.
Browse the packaged examples under src/lib/examples/ for consumer-facing patterns that match the public API.