feat: add darkmode persist

src/App.jsx

@@ -1,12 +1,13 @@
 import { h } from 'preact';
-import { useState} from 'preact/hooks'
 import Home from './components/home'
+import { useDarkModeState }  from './hooks/useDarkMode'
 import './styles/main.css'
 
 function App() {
-  const [isDark, setIsDark] = useState(false)
+  const [isDark, setIsDark] = useDarkModeState()
+
   const onChangeTheme = (arg) => {
-    setIsDark(arg)
+     setIsDark(arg)
   }
 
   return (

src/hooks/useDarkMode.js

@@ -0,0 +1,17 @@
+import { useState, useEffect } from "preact/hooks"
+
+const DARK = 'dark'
+const LIGHT =  'ligth'
+
+export const useDarkModeState = () => {
+    const [isDark, setIsDark] = useState(() => {
+        const mode = localStorage.getItem('themeMode', LIGHT)
+        return mode === 'dark'
+    });
+
+    useEffect(() => {
+        localStorage.setItem('themeMode', isDark ? DARK : LIGHT)
+    }, [isDark])
+
+    return [isDark, setIsDark]
+}