Add Svelte + Vite port of the logo generator

Svelte 5 (runes) single-component port over the shared src/logo.js
core. $state holds the model, $derived produces the generated CSS and
the logo's style string, $effect syncs the body background. bind:value
drives the controls (range/number inputs coerce to numbers). Keeps the
accessibility markup (labels, aria, <details>/<summary>, focus rings);
reset restores defaults via the form's onreset handler.

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="root"></div>
-  <script type="module" src="/src/main.jsx"></script>
+  <div id="app"></div>
+  <script type="module" src="/src/main.js"></script>
 </body>
 </html>

package-lock.json

@@ -1,304 +1,19 @@
 {
-  "name": "demo-ecmascript-react",
+  "name": "demo-ecmascript-svelte",
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+      "workspaces": [
+        "tests/deps/*",
+        "tests/projects/*",
+        "tests/projects/workspace/packages/*"
+      ],
+      "peerDependencies": {
+        "vite": "^3.0.0 || ^4.0.0 || ^5.0.0 || ^6.0.0 || ^7.0.0 || ^8.0.0"
+      },
+      "peerDependenciesMeta": {
+        "vite": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/zimmerframe": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/zimmerframe/-/zimmerframe-1.1.4.tgz",
+      "integrity": "sha512-B58NGBEoc8Y9MWWCQGl/gq9xBCe4IiKM0a2x7GZdQKOW5Exr8S1W24J6OgM1njK8xCRGvAJIL/MxXHf6SkmQKQ==",
+      "dev": true,
+      "license": "MIT"
     }
   }
 }

package.json

@@ -1,7 +1,7 @@
 {
-  "name": "demo-ecmascript-react",
+  "name": "demo-ecmascript-svelte",
   "version": "1.0.0",
-  "description": "LIBRETECH logo generator — React + Vite",
+  "description": "LIBRETECH logo generator — Svelte + Vite",
   "repository": {
     "type": "git",
     "url": "ssh://tengo@git.librete.ch:41240/public/demo-ecmascript.git"
@@ -13,12 +13,9 @@
     "build": "vite build",
     "preview": "vite preview"
   },
-  "dependencies": {
-    "react": "^19.0.0",
-    "react-dom": "^19.0.0"
-  },
   "devDependencies": {
-    "@vitejs/plugin-react": "^4.3.4",
+    "@sveltejs/vite-plugin-svelte": "^5.0.3",
+    "svelte": "^5.16.0",
     "vite": "^6.0.0"
   }
 }

src/App.jsx

@@ -1,135 +0,0 @@
-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.svelte

@@ -0,0 +1,133 @@
+<script>
+  import { defaults, fonts, logoStyle, cssOutput } from './logo.js';
+
+  const FONT_LABELS = { Impact: 'Impact (System)' };
+
+  let s = $state({ ...defaults });
+  let copied = $state(false);
+
+  const css = $derived(cssOutput(s));
+  const logoCss = $derived(styleString(logoStyle(s)));
+
+  $effect(() => {
+    document.body.style.background = s.bg;
+  });
+
+  // logoStyle() returns a camelCase object; the style attribute needs a string.
+  function styleString(obj) {
+    return Object.entries(obj)
+      .map(([k, v]) => `${k.replace(/[A-Z]/g, (m) => '-' + m.toLowerCase())}:${v}`)
+      .join(';');
+  }
+
+  async function copy() {
+    try {
+      await navigator.clipboard.writeText(css);
+      copied = true;
+      setTimeout(() => (copied = false), 1500);
+    } catch {
+      alert('Kopieren fehlgeschlagen — bitte manuell aus dem Code-Feld kopieren.');
+    }
+  }
+
+  function onSubmit(e) {
+    e.preventDefault();
+  }
+
+  // bind:value owns the values, so restore defaults explicitly on reset.
+  function onReset(e) {
+    e.preventDefault();
+    s = { ...defaults };
+  }
+</script>
+
+<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" onsubmit={onSubmit} onreset={onReset}>
+      <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" bind:value={s.text}></textarea>
+
+      <h2>Schrift</h2>
+      <select id="font" aria-label="Schriftart" bind:value={s.font}>
+        {#each fonts as f}
+          <option value={f}>{FONT_LABELS[f] || f}</option>
+        {/each}
+      </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" bind:value={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" bind:value={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" bind:value={s.ls} />
+
+      <h2>Farben</h2>
+      <div class="color-row">
+        <input type="color" id="c-bg" bind:value={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" bind:value={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" bind:value={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" bind:value={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" bind:value={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" bind:value={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" bind:value={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" bind:value={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" bind:value={s.rot} />
+        </div>
+        <div>
+          <label for="skew">Schräge: <span class="val">{s.skew}</span>°</label>
+          <input type="range" id="skew" min="-20" max="20" bind:value={s.skew} />
+        </div>
+      </div>
+
+      <h2>Generiertes CSS</h2>
+      <code id="cssout">{css}</code>
+      <button type="button" class="copy-btn" class:copied onclick={copy}>
+        {copied ? 'Kopiert!' : 'CSS kopieren'}
+      </button>
+      <button type="reset" class="reset-btn">Zurücksetzen</button>
+    </form>
+  </div>
+</details>

src/main.js

@@ -0,0 +1,7 @@
+import { mount } from 'svelte';
+import App from './App.svelte';
+import './style.css';
+
+const app = mount(App, { target: document.getElementById('app') });
+
+export default app;

src/main.jsx

@@ -1,10 +0,0 @@
-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;
 }
-#root { display: contents; }
+#app { display: contents; }
 .logo {
   font-size: 18vw;
   font-weight: 400;

svelte.config.js

@@ -0,0 +1,5 @@
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
+
+export default {
+  preprocess: vitePreprocess(),
+};

vite.config.js

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