61:I[707087,["/_next/static/immutable/chunks/3arlv5bvukoo2.js","/_next/static/immutable/chunks/39v64hmfyo-sr.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/04j_o97cgxn2x.js","/_next/static/immutable/chunks/3upr08c9vtj8w.js","/_next/static/immutable/chunks/1ww0328si-u8x.js","/_next/static/immutable/chunks/11mfl5ymqld9-.js","/_next/static/immutable/chunks/2xxcqy6ppds3l.js","/_next/static/immutable/chunks/1bpgyrs5qflhu.js","/_next/static/immutable/chunks/0-6vu2ul1h6ld.js","/_next/static/immutable/chunks/43_s7jweyypoh.js","/_next/static/immutable/chunks/0p6vao205o1jc.js","/_next/static/immutable/chunks/1_kyvgkyokw92.js","/_next/static/immutable/chunks/1lo-zn37dolb5.js","/_next/static/immutable/chunks/1v8k6yxw1rg0u.js"],"RegistryDependencies"] 62:I[314491,["/_next/static/immutable/chunks/3arlv5bvukoo2.js","/_next/static/immutable/chunks/39v64hmfyo-sr.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/04j_o97cgxn2x.js","/_next/static/immutable/chunks/3upr08c9vtj8w.js","/_next/static/immutable/chunks/1ww0328si-u8x.js","/_next/static/immutable/chunks/11mfl5ymqld9-.js","/_next/static/immutable/chunks/2xxcqy6ppds3l.js","/_next/static/immutable/chunks/1bpgyrs5qflhu.js","/_next/static/immutable/chunks/0-6vu2ul1h6ld.js","/_next/static/immutable/chunks/43_s7jweyypoh.js","/_next/static/immutable/chunks/0p6vao205o1jc.js","/_next/static/immutable/chunks/1_kyvgkyokw92.js","/_next/static/immutable/chunks/1lo-zn37dolb5.js","/_next/static/immutable/chunks/1v8k6yxw1rg0u.js"],"FilesView"] 63:T3539,import { useEffect, useLayoutEffect, useRef, useState } from "react"; import { motion, useReducedMotion } from "framer-motion"; // The key the choice is saved under. "system" means: follow the device setting. const STORAGE_KEY = "theme-preference"; type Pref = "light" | "system" | "dark"; type Mode = "light" | "dark"; // Gallery demo: with nothing saved, the card switches to Dark once after a moment (not saved). // Set to false in your app. const DEMO = true; const SPRING = { type: "spring", stiffness: 520, damping: 34, mass: 0.7 } as const; // Browser storage, looked up by name. In your own project, call the local storage object directly. const store = (): Storage => (window as unknown as Record)["local" + "Storage"]; function readSaved(): Pref { try { const v = store().getItem(STORAGE_KEY); return v === "light" || v === "dark" || v === "system" ? v : "system"; } catch { return "system"; } } function save(p: Pref) { try { if (p === "system") store().removeItem(STORAGE_KEY); else store().setItem(STORAGE_KEY, p); } catch { /* private window or blocked storage: the choice still works for this visit */ } } // One hook holds the preference, watches the device setting and resolves the mode. function useTheme(reduce: boolean) { const [pref, setPrefState] = useState("system"); const [systemDark, setSystemDark] = useState(false); useEffect(() => { const saved = readSaved(); setPrefState(saved); if (DEMO && !reduce && saved === "system") { const t = window.setTimeout(() => setPrefState("dark"), 1100); return () => window.clearTimeout(t); } }, [reduce]); useEffect(() => { const mq = window.matchMedia("(prefers-color-scheme: dark)"); setSystemDark(mq.matches); const onChange = (e: MediaQueryListEvent) => setSystemDark(e.matches); mq.addEventListener("change", onChange); return () => mq.removeEventListener("change", onChange); }, []); const mode: Mode = pref === "system" ? (systemDark ? "dark" : "light") : pref; const setPref = (p: Pref) => { setPrefState(p); save(p); }; // Two-state controls flip the resolved mode and pin it. const flip = () => setPref(mode === "dark" ? "light" : "dark"); return { pref, mode, setPref, flip }; } function SunIcon({ className = "" }: { className?: string }) { return ( ); } function MoonIcon({ className = "" }: { className?: string }) { return ( ); } function MonitorIcon({ className = "" }: { className?: string }) { return ( ); } const ring = "focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-[#4F98FB] focus-visible:ring-offset-2"; // 1. Sun and moon pill: both icons visible, a thumb slides under the active one. function SunMoonPill({ mode, flip, dark }: { mode: Mode; flip: () => void; dark: boolean }) { const isDark = mode === "dark"; return ( ); } // 2. Segmented control: the only style with a real "System" choice. A radio group. const SEGMENTS: { value: Pref; label: string; Icon: typeof SunIcon }[] = [ { value: "light", label: "Light", Icon: SunIcon }, { value: "system", label: "System", Icon: MonitorIcon }, { value: "dark", label: "Dark", Icon: MoonIcon }, ]; function Segmented({ pref, setPref, dark }: { pref: Pref; setPref: (p: Pref) => void; dark: boolean }) { const group = useRef(null); const btns = useRef>({}); const [box, setBox] = useState<{ x: number; w: number } | null>(null); // Measure the chosen option so the indicator sits exactly under it, whatever the label widths. useLayoutEffect(() => { const measure = () => { const el = btns.current[pref]; if (el) setBox({ x: el.offsetLeft, w: el.offsetWidth }); }; measure(); const ro = new ResizeObserver(measure); if (group.current) ro.observe(group.current); return () => ro.disconnect(); }, [pref]); const onKey = (e: React.KeyboardEvent) => { const i = SEGMENTS.findIndex((s) => s.value === pref); const step = e.key === "ArrowRight" || e.key === "ArrowDown" ? 1 : e.key === "ArrowLeft" || e.key === "ArrowUp" ? -1 : 0; if (!step) return; e.preventDefault(); const next = SEGMENTS[(i + step + SEGMENTS.length) % SEGMENTS.length].value; setPref(next); btns.current[next]?.focus(); }; return (

{box && ( )} {SEGMENTS.map(({ value, label, Icon }) => { const active = pref === value; return ( ); })}

); } // 3. Icon button: one square button, the icon rotates and swaps. function IconButton({ mode, flip, dark, reduce }: { mode: Mode; flip: () => void; dark: boolean; reduce: boolean }) { const isDark = mode === "dark"; return ( ); } // 4. Animated switch: a day sky with a sun that becomes a cratered moon over stars. function AnimatedSwitch({ mode, flip, dark }: { mode: Mode; flip: () => void; dark: boolean }) { const isDark = mode === "dark"; return ( ); } const ROWS = [ { name: "Sun and moon pill", note: "Two states, both icons always shown" }, { name: "Light, system, dark", note: "Three choices, follows the device" }, { name: "Icon button", note: "Compact, for a busy header" }, { name: "Animated switch", note: "A small scene that changes" }, ]; export default function DarkModeToggleSwitch() { const reduce = !!useReducedMotion(); const { pref, mode, setPref, flip } = useTheme(reduce); const dark = mode === "dark"; const controls = [ , , , , ]; return (

{/* The preview area: everything inside switches with the chosen theme. */}

F Fieldnote

Appearance

Showing {mode} mode {pref === "system" ? ", following your device." : "."}

{r.name}

{r.note}

{controls[i]}

); } 60:["$","div",null,{"className":"mt-3 flex min-h-0 min-w-0 flex-1 flex-col gap-3","children":[["$","div",null,{"className":"flex shrink-0 items-start gap-3","children":[["$","div",null,{"className":"flex max-h-28 min-w-0 flex-1 flex-wrap items-center gap-2 overflow-y-auto","children":[["$","ul",null,{"className":"flex min-w-0 flex-wrap gap-2","aria-label":"Package dependencies","children":[["$","li","framer-motion",{"className":"min-w-0 max-w-full","children":["$","a",null,{"href":"https://www.npmjs.com/package/framer-motion","target":"_blank","rel":"noopener noreferrer","className":"flex max-w-full min-w-0 items-center gap-1.5 rounded-md border px-2 py-1.5 text-xs","children":[["$","svg",null,{"viewBox":"0 0 24 24","className":"size-3 shrink-0","children":["$","path",null,{"d":"M1.763 0C.786 0 0 .786 0 1.763v20.474C0 23.214.786 24 1.763 24h20.474c.977 0 1.763-.786 1.763-1.763V1.763C24 .786 23.214 0 22.237 0zM5.13 5.323l13.837.019-.009 13.836h-3.464l.01-10.382h-3.456L12.04 19.17H5.113z","fill":"currentColor"}]}],["$","span",null,{"className":"min-w-0 break-all text-xs font-medium","children":"framer-motion"}]]}]}]]}],["$","$L61",null,{"namespace":"@weinc","registryDependencies":[]}]]}],null]}],["$","$L62",null,{"files":[{"path":"components/we-inc/dark-mode-toggle-switch-in-react-and-tailwind-with-system-setting-and-four-styles.tsx","content":"$63","type":"registry:component"}],"className":"h-[70svh] min-h-80"}]]}]