Theme Switcher

Preview

Rendered from the story the storybook (a11y) CI gate runs axe against — the preview can't show something that hasn't been verified.

Install

Two equivalent paths — the URL works in any shadcn-CLI setup; the alias works once you've registered @interlace in your components.json.

npx shadcn@latest add https://ds.interlace.tools/r/theme-switcher.json

npx shadcn@latest add @interlace/theme-switcher

Import

4 named exports — pull the parts you need.

import { MIN_VIEWPORT, ThemeSchemeToggle, ThemeSwitcher, themeSwitcherVariants } from '@/components/ui/theme-switcher';

Anatomy

Extracted from the primitive's JSDoc header. The source is the only documentation that can't drift.

<ThemeSwitcher>                       ← DropdownMenuTrigger (button)
    └ popup                             ← data-min-viewport, role="menu"
       ├ "Theme"        radiogroup      ← one item per registered theme
       ├ separator
       └ "Appearance"   radiogroup      ← Light / Dark / System
  <ThemeSchemeToggle>                   ← Base UI Toggle, aria-pressed

Variants

Closed prop unions enforced by class-variance-authority. See Storybook's Variants story for the rendered matrix.

• size
  • sm
  • defaultdefault

API reference

Parsed from the type declarations in the source — the same file the install writes into your tree, so this table can't drift from the component you get.

Accessibility

Every story for this component is rendered headlessly and checked with axe-core (wcag2aa, wcag22aa, best-practice, ACT) on every PR. That gate has no continue-on-error, so what ships has zero known violations.

What follows is what static analysis can see. Axe cannot press a key and never sees an overlay open, so the operable-without-a-mouse claim lives in Behavior instead, where the keyboard path is replayed step by step.

Focus + keyboard behaviour

Native element semantics — no interaction layer to get wrong.

Focus ring (WCAG 2.2 SC 2.4.13)

Inherited from the preflight focus contract shipped in @interlace/theme.

Reduced motion

No animation to gate.

ARIA in the source

• role="menu"
• aria-current
• aria-hidden
• aria-label

Examples

4 more states from the same story file.

R-rule compliance

Every primitive in @interlace/ui models to the portable 26-rule floor enforced by the componentApi ESLint preset. The cells below pin exactly where each rule applies in this file.

Dependencies

Base UI primitive

Native / no Base UI dependency

Lucide icons

• MonitorIcon
• MoonIcon
• SunIcon

NPM dependencies

• class-variance-authority
• lucide-react

Registry dependencies

• @interlace/theme
• @interlace/cn
• @interlace/dropdown-menu
• @interlace/theme-tokens
• @interlace/toggle
• @interlace/use-theme

Source

The full implementation — components/ui/theme-switcher.tsx once installed.

'use client';

import * as React from 'react';

// @interlace/theme-switcher v1.0.0 — Interlace design system.
// Docs, props and live preview: https://ds.interlace.tools/c/theme-switcher
// What changed since: https://ds.interlace.tools/c/theme-switcher#history
// Generated banner — keep it, the upgrade diff reads this version.

/**
 * @interlace/ui — ThemeSwitcher + ThemeSchemeToggle
 *
 * The UI half of the two-axis theme contract (`styles/index.css`,
 * `src/lib/use-theme.ts`). Two controls, because the two axes are genuinely
 * different questions and a single control that tries to serve both ends up
 * as a four-item list called "Light / Dark / Harbor / Harbor Dark" — a
 * cross-product that grows multiplicatively with every theme added.
 *
 *   ThemeSwitcher       menu: which THEME  ×  which SCHEME  (two radio groups)
 *   ThemeSchemeToggle   one-click light ⇄ dark, for a nav bar

…292 more lines…

Registry JSON

The raw registry record — what the shadcn CLI fetches.