Show HN: Styler – CSS-in-JS rebuilt around React 19 streaming SSR (5KB, 0 deps)

Category: library

Tags: css-in-js, react, server-side-rendering

Score: 6.0/10 (Innovation: 5, Technical: 7, Documentation: 6, Utility: 6)

Styler is a lightweight CSS-in-JS engine for React 19, designed as a drop-in replacement for styled-components with a focus on streaming SSR and small bundle size (5KB, 0 deps). It is part of a larger composable UI toolkit that includes responsive props, multi-dimensional theming, and type-safe chainable APIs, making it interesting for building custom UI systems.

Target audience: frontend devs

Repository: https://github.com/vitus-labs/ui-system/tree/main/packages/styler · TypeScript · MIT · 2 stars

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