Rouse

The JavaScript UI and state orchestrator for server-rendered HTML

[!WARNING]
Pre-release software: Rouse is currently in active development, unstable, and not intended for production use. Breaking changes will occur without notice.

Motivation

Rouse is being built to bridge the gap between server-rendered HTML and reactive UIs. The goal is to deliver the performance and SEO benefits of server-side rendering (SSR) with the dynamic experience of a single-page application (SPA) – without the build-step overhead or architectural complexity.

Instead of locking you into a single paradigm, Rouse gives you the flexibility to build pragmatically. You shouldn't have to fight your framework. Whether an interaction demands server-rendered HTML fragments or client-managed reactive state, Rouse handles both within a single, cohesive system.

Key features

• Zero build or compile step: Import Rouse as an ES module from a CDN, or integrate it into your build pipeline with first-class TypeScript support.
• Backend agnostic: Pairs seamlessly with your stack of choice – Rails, Django, Laravel, Go, Express, Hono, and more.
• Server-managed (hypermedia): Fetch HTML fragments on any event; let the server drive targeting, redirects, and history through response headers.
• Client-managed (reactive): Local scopes and global stores powered by fine-grained signals, two-way binding, and optimistic updates.
• On-demand reconciliation: Sync client state back to the server with built-in rollback capabilities, conflict detection, and per-field dirty tracking.
• Declarative and programmatic: Combine the speed of expressive HTML attributes with the power of an elegant JavaScript API.
• Advanced orchestration: Define custom scope logic, handle fine-grained activation strategies, and cleanly hydrate third-party libraries inside isolated regions.