Building production-ready UIs with SonoJS and Tailwind v4
Alex Rivera
Introduction
Modern front-end development demands more than just getting things to work — it requires systems that scale, components that compose, and designs that adapt. SonoJS is built to satisfy all three. In this guide, we walk through a full-featured interface, from project setup to production.
Setting Up the Project
The fastest way to start is with the SonoJS CLI. Run npx @sonojs/ui@latest init and follow the prompts for your framework, theme tokens, and TypeScript setup. The scaffolder wires Tailwind v4 with the correct CSS imports and aliases.
Semantic Token System
One of SonoJS’s strongest features is its token hierarchy. Instead of hardcoding colors, you style with tokens like bg-primary, text-foreground, and border-border. Because these map to CSS custom properties backed by oklch values, dark mode is zero-effort: flip the dark class and every token inverts appropriately.
Responsive Layouts
Prefer logical layout utilities and breakpoint maps so grids and stacks adapt without physical left/right assumptions. Keep control heights consistent across breakpoints and let width and stacking change instead.
Accessibility by Default
Interactive SonoJS components ship with correct ARIA attributes, keyboard navigation, and focus management. Overlays handle focus trapping. Your job is semantic HTML structure — use main, nav, section, and header landmarks appropriately.
Production Checklist
Before shipping: run typecheck, verify the build, and test at 375px, 768px, and 1280px viewports. Check both light and dark modes. Ensure interactive elements have visible focus rings and aria-labels. Use Lighthouse or axe DevTools to catch remaining gaps.
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