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feat: add dark/light theme switcher #20

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Merged
nadimtuhin merged 1 commit into from
Jun 27, 2026
Merged

feat: add dark/light theme switcher #20

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26 changes: 26 additions & 0 deletions src/App.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,25 @@ import {
GripVertical,
PlayCircle,
Shield as ShieldIcon,
Moon,
Sun,
} from "lucide-react";

// ── theme ─────────────────────────────────────────────────────────────────────
function useTheme() {
const [dark, setDark] = useState<boolean>(() => {
const saved = localStorage.getItem("theme");
if (saved) return saved === "dark";
return window.matchMedia("(prefers-color-scheme: dark)").matches;

@kilo-code-bot kilo-code-bot Bot Jun 27, 2026

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CRITICAL: SSR compatibility issue - window is undefined on server side

The window.matchMedia call will throw a ReferenceError during server-side rendering (SSR) or in any Node.js environment. The fallback for system preference detection needs a guard for window availability.

Suggested change
return window.matchMedia("(prefers-color-scheme: dark)").matches;
if (saved) return saved === "dark";
return typeof window !== "undefined" && window.matchMedia("(prefers-color-scheme: dark)").matches;

This check ensures the code gracefully handles environments where window doesn't exist.

Reply with @kilocode-bot fix it to have Kilo Code address this issue.

});

useEffect(() => {
document.documentElement.classList.toggle("dark", dark);
localStorage.setItem("theme", dark ? "dark" : "light");
}, [dark]);

return { dark, toggle: () => setDark((d) => !d) };
}
import UnixTimeConverter from "./components/UnixTimeConverter";
import JsonValidator from "./components/JsonValidator";
import { Base64SideBySide } from "./components/Base64SideBySide";
Expand Down Expand Up @@ -197,6 +215,7 @@ function Layout({ tools: defaultTools }: { tools: Tool[] }) {
const [isShortcutsOpen, setIsShortcutsOpen] = useState(false);
const [isSidebarExpanded, setIsSidebarExpanded] = useState(true);
const [isDragActive, setIsDragActive] = useState(false);
const { dark, toggle: toggleTheme } = useTheme();
const { state, startTour, hideWelcome, notifyDragComplete } = useOnboarding();
const [tools, setTools] = useState<Tool[]>(() => {
const savedOrder = localStorage.getItem("toolsOrder");
Expand Down Expand Up @@ -398,6 +417,13 @@ function Layout({ tools: defaultTools }: { tools: Tool[] }) {
>
<PlayCircle size={18} />
</button>
<button
onClick={toggleTheme}
className="p-1.5 hover:bg-gray-100 dark:hover:bg-gray-700 rounded"
title={dark ? "Switch to light mode" : "Switch to dark mode"}
>
{dark ? <Sun size={18} /> : <Moon size={18} />}
</button>
<button
onClick={() => setIsSidebarExpanded(false)}
className="p-1.5 hover:bg-gray-100 rounded"
Expand Down
1 change: 1 addition & 0 deletions tailwind.config.js
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
/** @type {import('tailwindcss').Config} */
export default {
content: ['./index.html', './src/**/*.{js,ts,jsx,tsx}'],
darkMode: 'class',
theme: {
extend: {
animation: {
Expand Down
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