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qwik-theme-toggle

v2.1.0

Published

The Qwik-Theme-Toggle Library is a lightweight, user-friendly JavaScript library developed as a Qwik component. It provides an efficient theme toggle button for web applications, enabling users to switch between light, dark, and auto modes, enhancing thei

Downloads

208

Readme

Qwik-Theme-Toggle

Qwik-Theme-Toggle is a lightweight, zero‑flicker, SSR‑safe theme toggler built as a Qwik component.

It supports:

  • Custom CSS themes (e.g., latte, dracula)
  • Auto mode with OS preference detection
  • DaisyUI & Tailwind compatibility
  • Icon modes (light, dark, auto)
  • URL query param sync (optional)
  • LocalStorage persistence
  • SSR hydration consistency

Installation

npm install qwik-theme-toggle
# or
bun install qwik-theme-toggle

Usage

1. Add ThemeScript inside <head>

<ThemeScript
  themeStorageKey="theme"
  themeQuery="theme"     // optional
  lightTheme="latte"     // optional, default: 'light'
  darkTheme="dracula"    // optional, default: 'dark'
/>

2. Add ThemeToggle anywhere in your UI

<ThemeToggle
  themeStorageKey="theme"
  themeQuery="theme"               // optional
  lightTheme="latte"               // optional, default: 'light'
  darkTheme="dracula"              // optional, default: 'dark'
  textSize="text-3xl"
  myClass="hover:text-secondary"
/>

How it works

LocalStorage stores CSS theme:

latte | dracula | auto

HTML is always consistent:

<html
  class="latte"
  data-theme="latte"
  icon-theme="light"
/>

icon-theme is always:

light | dark | auto

Auto mode resolves OS preference:

auto → latte (light OS)
auto → dracula (dark OS)

Project Structure

src/
 ├── components/theme-toggle/
 └── index.ts
example/

Development

bun install
bun start

Production Build

bun run build

Outputs:

  • lib/ — compiled library
  • lib-types/ — TypeScript definitions

Live Demo

Codesandbox: https://codesandbox.io/p/github/lieranderl/qwik-theme-toggle/main
Video demo: https://www.youtube.com/watch?v=51iWIiZFCQY