A state manager, a business logic layer and an API client — three independent tools in one library. Take exactly what you need.
Reactive storages with a unified API. No RxJS, no React — just state and subscriptions.
A business logic layer on top of storage: actions, effects and module assembly. Shaped like NestJS services, but without a heavy DI container.
A built-in HTTP client with smart caching — like RTK Query, but simpler.
A pure-TypeScript core: works with any framework or none at all. rxjs and react are optional peer dependencies.
Strict typing and autocomplete across actions, selectors and effects. Types are inferred, not duplicated by hand.
Memory, LocalStorage and IndexedDB under one IStorage interface — swap the implementation in a single line, painlessly.
Ready-made middleware (batching, shallow-compare) plus your own — for optimization and intercepting storage operations.
Broadcast state sharing between browser tabs out of the box — no third-party libraries.
Server rendering via createSynapseCtx({ ssr: true }) with dehydrate/hydrate — content in HTML with no hydration mismatch.
The State Manager is responsible for where state lives, while the Business Logic Layer handles how logic drives it. Take only the layer you need.
where state lives
how logic drives state
One package, three independent tools. Start with the install and plug in your layer.