1fruis

1fruis is a fictional open-source software framework designed for building web and cross-platform user interfaces. It presents a declarative component model, a small runtime, and a plugin system intended to amplify developer productivity while keeping runtime size minimal. The project name combines the CSS grid unit 1fr with UI, signaling its focus on flexible layouts.

Core concepts include a virtual DOM-like diffing engine, a reactive data layer, and a tree of reusable components. It emphasizes predictable state, explicit data flows, and accessibility. The framework ships with a minimal standard library, theming support, and tooling for type-safe templates.

History: origin in 2022 as a side project by a fictional group “Aurora Labs.” The first public release appeared in 2023 under an MIT-style license; community growth remained modest, with contributors focusing on core stability and documentation.

Architecture: the runtime is implemented in JavaScript/TypeScript. It comprises a core runtime, a component system, rendering backends for web and native targets, and a plugin interface. The data layer uses observable state and computed properties, enabling reactive updates and efficient re-renders.

Usage and reception: adopted by a small number of teams for dashboards and internal tools; praised for small bundle size, clear data flow, and ergonomic APIs. Critics note a limited ecosystem and fewer third-party integrations compared with larger frameworks.

See also: React, Vue, Svelte, SolidJS.