Add React + Vite port of the logo generator

Full React port sharing src/logo.js core (shadow geometry, CSS
output, defaults, font list). App.jsx holds the entire state in a
single useState object; controlled inputs drive the live render and
generated CSS. Keeps the accessibility markup (labels, aria,
<details>/<summary>, focus rings) from the html/vanilla versions;
reset restores defaults via the form's onReset.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

index.html

@@ -7,7 +7,7 @@
   <link href="https://fonts.googleapis.com/css2?family=Anton&family=Bowlby+One&family=Bebas+Neue&family=Bungee&family=Passion+One:wght@900&family=Ultra&display=swap" rel="stylesheet">
 </head>
 <body>
-  <div id="app"></div>
+  <div id="root"></div>
-  <script type="module" src="/src/main.js"></script>
+  <script type="module" src="/src/main.jsx"></script>
 </body>
 </html>

package-lock.json

@@ -1,25 +1,169 @@
 {
-  "name": "demo-ecmascript-vue",
+  "name": "demo-ecmascript-react",
   "version": "1.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "demo-ecmascript-vue",
+      "name": "demo-ecmascript-react",
       "version": "1.0.0",
       "license": "WTFPL",
       "dependencies": {
-        "vue": "^3.5.13"
+        "react": "^19.0.0",
+        "react-dom": "^19.0.0"
       },
       "devDependencies": {
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+        "@vitejs/plugin-react": "^4.3.4",
         "vite": "^6.0.0"
       }
     },
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@@ -49,10 +219,77 @@
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@@ -504,10 +741,61 @@
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     "node_modules/@rollup/rollup-android-arm-eabi": {
@@ -899,6 +1187,51 @@
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@@ -906,138 +1239,127 @@
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+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/browserslist"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "escalade": "^3.2.0",
+        "picocolors": "^1.1.1"
+      },
+      "bin": {
+        "update-browserslist-db": "cli.js"
+      },
+      "peerDependencies": {
+        "browserslist": ">= 4.21.0"
+      }
+    },
     "node_modules/vite": {
       "version": "6.4.2",
       "resolved": "https://registry.npmjs.org/vite/-/vite-6.4.2.tgz",
@@ -1339,26 +1808,12 @@
         }
       }
     },
-    "node_modules/vue": {
+    "node_modules/yallist": {
-      "version": "3.5.35",
+      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/vue/-/vue-3.5.35.tgz",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
-      "integrity": "sha512-cx89fnr+0kVGHiNFG6y6s0bdjypJRFNZn6x3WPstNdQR1bi1mbB7h4v5IBGTsPJU3nK1+0Iqj3Zf+hZWMieR4Q==",
+      "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==",
-      "license": "MIT",
+      "dev": true,
-      "dependencies": {
+      "license": "ISC"
-        "@vue/compiler-dom": "3.5.35",
-        "@vue/compiler-sfc": "3.5.35",
-        "@vue/runtime-dom": "3.5.35",
-        "@vue/server-renderer": "3.5.35",
-        "@vue/shared": "3.5.35"
-      },
-      "peerDependencies": {
-        "typescript": "*"
-      },
-      "peerDependenciesMeta": {
-        "typescript": {
-          "optional": true
-        }
-      }
     }
   }
 }

package.json

@@ -1,7 +1,7 @@
 {
-  "name": "demo-ecmascript-vue",
+  "name": "demo-ecmascript-react",
   "version": "1.0.0",
-  "description": "LIBRETECH logo generator — Vue + Vite",
+  "description": "LIBRETECH logo generator — React + Vite",
   "repository": {
     "type": "git",
     "url": "ssh://tengo@git.librete.ch:41240/public/demo-ecmascript.git"
@@ -14,10 +14,11 @@
     "preview": "vite preview"
   },
   "dependencies": {
-    "vue": "^3.5.13"
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0"
   },
   "devDependencies": {
-    "@vitejs/plugin-vue": "^5.2.1",
+    "@vitejs/plugin-react": "^4.3.4",
     "vite": "^6.0.0"
   }
 }

src/App.jsx

@@ -0,0 +1,135 @@
+import { useEffect, useState } from 'react';
+import { defaults, fonts, logoStyle, cssOutput } from './logo.js';
+
+const FONT_LABELS = { Impact: 'Impact (System)' };
+
+export default function App() {
+  const [s, setS] = useState(defaults);
+  const [copied, setCopied] = useState(false);
+
+  const set = (key) => (value) => setS((prev) => ({ ...prev, [key]: value }));
+  const num = (key) => (e) => set(key)(+e.target.value);
+  const str = (key) => (e) => set(key)(e.target.value);
+
+  useEffect(() => {
+    document.body.style.background = s.bg;
+  }, [s.bg]);
+
+  const css = cssOutput(s);
+
+  const copy = async () => {
+    try {
+      await navigator.clipboard.writeText(css);
+      setCopied(true);
+      setTimeout(() => setCopied(false), 1500);
+    } catch {
+      alert('Kopieren fehlgeschlagen — bitte manuell aus dem Code-Feld kopieren.');
+    }
+  };
+
+  // Controlled inputs are not reset by the browser, so restore defaults here.
+  const reset = (e) => {
+    e.preventDefault();
+    setS(defaults);
+  };
+
+  return (
+    <>
+      <div className="logo" style={logoStyle(s)}>{s.text || ' '}</div>
+
+      <details className="disclosure" id="panel" open>
+        <summary className="toggle-panel">Panel ein/aus</summary>
+
+        <div className="panel">
+          <h1>Logo-Generator</h1>
+
+          <form id="logoForm" onSubmit={(e) => e.preventDefault()} onReset={reset}>
+            <h2>Inhalt</h2>
+            <p className="hint" id="hint-text">Mehrere Zeilen mit Enter trennen.</p>
+            <textarea
+              id="text"
+              rows={2}
+              aria-label="Logo-Text"
+              aria-describedby="hint-text"
+              value={s.text}
+              onChange={str('text')}
+            />
+
+            <h2>Schrift</h2>
+            <select id="font" aria-label="Schriftart" value={s.font} onChange={str('font')}>
+              {fonts.map((f) => (
+                <option key={f} value={f}>{FONT_LABELS[f] || f}</option>
+              ))}
+            </select>
+
+            <div className="row-2col">
+              <div>
+                <label htmlFor="fs">Größe: <span className="val">{s.fs}</span>vw</label>
+                <input type="range" id="fs" min="6" max="30" step="0.5" value={s.fs} onChange={num('fs')} />
+              </div>
+              <div>
+                <label htmlFor="lh">Zeilenabstand: <span className="val">{s.lh.toFixed(2)}</span></label>
+                <input type="range" id="lh" min="0.5" max="2" step="0.05" value={s.lh} onChange={num('lh')} />
+              </div>
+            </div>
+            <label htmlFor="ls">Buchstabenabstand: <span className="val">{s.ls.toFixed(3)}</span>em</label>
+            <input type="range" id="ls" min="-0.15" max="0.3" step="0.005" value={s.ls} onChange={num('ls')} />
+
+            <h2>Farben</h2>
+            <ColorRow id="bg" label="Hintergrund" value={s.bg} onChange={str('bg')} />
+            <ColorRow id="face" label="Face" value={s.face} onChange={str('face')} />
+            <ColorRow id="depth" label="Tiefe" value={s.depth} onChange={str('depth')} />
+            <ColorRow id="shadow" label="Schatten & Kontur" value={s.shadow} onChange={str('shadow')} />
+
+            <h2>Lichtrichtung</h2>
+            <p className="hint">Steuert alle Versätze gleichzeitig — Schatten geht in Lichtrichtung, Tiefe entgegen.</p>
+            <label htmlFor="angle">Winkel: <span className="val">{s.angle}</span>° (0=oben, 90=rechts, 180=unten)</label>
+            <input type="range" id="angle" min="0" max="359" value={s.angle} onChange={num('angle')} />
+
+            <h2>Schichten</h2>
+            <p className="hint">Hinten nach vorn: Schatten · Tiefe · Kontur · Face</p>
+            <label htmlFor="shadow-len">Schatten-Länge: <span className="val">{s.shadowLen}</span>px</label>
+            <input type="range" id="shadow-len" min="0" max="80" value={s.shadowLen} onChange={num('shadowLen')} />
+            <label htmlFor="depth-len">Tiefe (in Gegenrichtung): <span className="val">{s.depthLen}</span>px</label>
+            <input type="range" id="depth-len" min="0" max="30" value={s.depthLen} onChange={num('depthLen')} />
+            <label htmlFor="contour-len">Kontur (vor der Tiefe): <span className="val">{s.contourLen}</span>px</label>
+            <input type="range" id="contour-len" min="0" max="20" value={s.contourLen} onChange={num('contourLen')} />
+
+            <h2>Komposition</h2>
+            <div className="row-2col">
+              <div>
+                <label htmlFor="rot">Drehung: <span className="val">{s.rot}</span>°</label>
+                <input type="range" id="rot" min="-25" max="25" value={s.rot} onChange={num('rot')} />
+              </div>
+              <div>
+                <label htmlFor="skew">Schräge: <span className="val">{s.skew}</span>°</label>
+                <input type="range" id="skew" min="-20" max="20" value={s.skew} onChange={num('skew')} />
+              </div>
+            </div>
+
+            <h2>Generiertes CSS</h2>
+            <code id="cssout">{css}</code>
+            <button
+              type="button"
+              className={'copy-btn' + (copied ? ' copied' : '')}
+              onClick={copy}
+            >
+              {copied ? 'Kopiert!' : 'CSS kopieren'}
+            </button>
+            <button type="reset" className="reset-btn">Zurücksetzen</button>
+          </form>
+        </div>
+      </details>
+    </>
+  );
+}
+
+function ColorRow({ id, label, value, onChange }) {
+  return (
+    <div className="color-row">
+      <input type="color" id={`c-${id}`} value={value} onChange={onChange} aria-labelledby={`lbl-${id}`} />
+      <span className="swatch-label" id={`lbl-${id}`}>{label}</span>
+      <span className="hex">{value}</span>
+    </div>
+  );
+}

src/App.vue

@@ -1,121 +0,0 @@
-<script setup>
-import { reactive, computed, ref, watchEffect } from 'vue';
-import { defaults, fonts, logoStyle, cssOutput } from './logo.js';
-
-const FONT_LABELS = { Impact: 'Impact (System)' };
-
-const s = reactive({ ...defaults });
-const css = computed(() => cssOutput(s));
-const logoCss = computed(() => logoStyle(s));
-const copied = ref(false);
-
-watchEffect(() => {
-  document.body.style.background = s.bg;
-});
-
-async function copy() {
-  try {
-    await navigator.clipboard.writeText(css.value);
-    copied.value = true;
-    setTimeout(() => (copied.value = false), 1500);
-  } catch {
-    alert('Kopieren fehlgeschlagen — bitte manuell aus dem Code-Feld kopieren.');
-  }
-}
-
-// v-model bindings own the values, so restore defaults explicitly on reset.
-function reset() {
-  Object.assign(s, defaults);
-}
-</script>
-
-<template>
-  <div class="logo" :style="logoCss">{{ s.text || ' ' }}</div>
-
-  <details class="disclosure" id="panel" open>
-    <summary class="toggle-panel">Panel ein/aus</summary>
-
-    <div class="panel">
-      <h1>Logo-Generator</h1>
-
-      <form id="logoForm" @submit.prevent @reset.prevent="reset">
-        <h2>Inhalt</h2>
-        <p class="hint" id="hint-text">Mehrere Zeilen mit Enter trennen.</p>
-        <textarea id="text" rows="2" aria-label="Logo-Text" aria-describedby="hint-text" v-model="s.text"></textarea>
-
-        <h2>Schrift</h2>
-        <select id="font" aria-label="Schriftart" v-model="s.font">
-          <option v-for="f in fonts" :key="f" :value="f">{{ FONT_LABELS[f] || f }}</option>
-        </select>
-
-        <div class="row-2col">
-          <div>
-            <label for="fs">Größe: <span class="val">{{ s.fs }}</span>vw</label>
-            <input type="range" id="fs" min="6" max="30" step="0.5" v-model.number="s.fs" />
-          </div>
-          <div>
-            <label for="lh">Zeilenabstand: <span class="val">{{ s.lh.toFixed(2) }}</span></label>
-            <input type="range" id="lh" min="0.5" max="2" step="0.05" v-model.number="s.lh" />
-          </div>
-        </div>
-        <label for="ls">Buchstabenabstand: <span class="val">{{ s.ls.toFixed(3) }}</span>em</label>
-        <input type="range" id="ls" min="-0.15" max="0.3" step="0.005" v-model.number="s.ls" />
-
-        <h2>Farben</h2>
-        <div class="color-row">
-          <input type="color" id="c-bg" v-model="s.bg" aria-labelledby="lbl-bg" />
-          <span class="swatch-label" id="lbl-bg">Hintergrund</span>
-          <span class="hex">{{ s.bg }}</span>
-        </div>
-        <div class="color-row">
-          <input type="color" id="c-face" v-model="s.face" aria-labelledby="lbl-face" />
-          <span class="swatch-label" id="lbl-face">Face</span>
-          <span class="hex">{{ s.face }}</span>
-        </div>
-        <div class="color-row">
-          <input type="color" id="c-depth" v-model="s.depth" aria-labelledby="lbl-depth" />
-          <span class="swatch-label" id="lbl-depth">Tiefe</span>
-          <span class="hex">{{ s.depth }}</span>
-        </div>
-        <div class="color-row">
-          <input type="color" id="c-shadow" v-model="s.shadow" aria-labelledby="lbl-shadow" />
-          <span class="swatch-label" id="lbl-shadow">Schatten &amp; Kontur</span>
-          <span class="hex">{{ s.shadow }}</span>
-        </div>
-
-        <h2>Lichtrichtung</h2>
-        <p class="hint">Steuert alle Versätze gleichzeitig — Schatten geht in Lichtrichtung, Tiefe entgegen.</p>
-        <label for="angle">Winkel: <span class="val">{{ s.angle }}</span>° (0=oben, 90=rechts, 180=unten)</label>
-        <input type="range" id="angle" min="0" max="359" v-model.number="s.angle" />
-
-        <h2>Schichten</h2>
-        <p class="hint">Hinten nach vorn: Schatten · Tiefe · Kontur · Face</p>
-        <label for="shadow-len">Schatten-Länge: <span class="val">{{ s.shadowLen }}</span>px</label>
-        <input type="range" id="shadow-len" min="0" max="80" v-model.number="s.shadowLen" />
-        <label for="depth-len">Tiefe (in Gegenrichtung): <span class="val">{{ s.depthLen }}</span>px</label>
-        <input type="range" id="depth-len" min="0" max="30" v-model.number="s.depthLen" />
-        <label for="contour-len">Kontur (vor der Tiefe): <span class="val">{{ s.contourLen }}</span>px</label>
-        <input type="range" id="contour-len" min="0" max="20" v-model.number="s.contourLen" />
-
-        <h2>Komposition</h2>
-        <div class="row-2col">
-          <div>
-            <label for="rot">Drehung: <span class="val">{{ s.rot }}</span>°</label>
-            <input type="range" id="rot" min="-25" max="25" v-model.number="s.rot" />
-          </div>
-          <div>
-            <label for="skew">Schräge: <span class="val">{{ s.skew }}</span>°</label>
-            <input type="range" id="skew" min="-20" max="20" v-model.number="s.skew" />
-          </div>
-        </div>
-
-        <h2>Generiertes CSS</h2>
-        <code id="cssout">{{ css }}</code>
-        <button type="button" class="copy-btn" :class="{ copied }" @click="copy">
-          {{ copied ? 'Kopiert!' : 'CSS kopieren' }}
-        </button>
-        <button type="reset" class="reset-btn">Zurücksetzen</button>
-      </form>
-    </div>
-  </details>
-</template>

src/main.js

@@ -1,5 +0,0 @@
-import { createApp } from 'vue';
-import App from './App.vue';
-import './style.css';
-
-createApp(App).mount('#app');

src/main.jsx

@@ -0,0 +1,10 @@
+import { StrictMode } from 'react';
+import { createRoot } from 'react-dom/client';
+import App from './App.jsx';
+import './style.css';
+
+createRoot(document.getElementById('root')).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+);

src/style.css

@@ -9,7 +9,7 @@ body {
   overflow: hidden;
   transition: background 0.15s;
 }
-#app { display: contents; }
+#root { display: contents; }
 .logo {
   font-size: 18vw;
   font-weight: 400;

vite.config.js

@@ -1,6 +1,6 @@
 import { defineConfig } from 'vite';
-import vue from '@vitejs/plugin-vue';
+import react from '@vitejs/plugin-react';
 
 export default defineConfig({
-  plugins: [vue()],
+  plugins: [react()],
 });