`, favicon, and body of `Root()` to\nmatch your app's existing `index.html`, and stamp anything else your shell\nreferences directly (images, css) with `immutableFileUrl()`.\n\n1. Create `frontend/root.tsx`:\n\n```tsx\n/** @jsxImportSource npm:hono@4/jsx */\nimport { raw } from \"npm:hono@4/html\";\nimport { immutableFileUrl } from \"https://esm.town/v/std/utils/index.ts\";\n\n// The HTML shell for the app. It is never cached, so immutableFileUrl can stamp\n// the current val version into each asset URL — the browser caches those\n// immutably, and publishing the val changes the URLs, refetching exactly once.\nexport function Root() {\n return (\n <>\n {raw(\"<!DOCTYPE html>\")}\n <html lang=\"en\">\n <head>\n <meta charSet=\"UTF-8\" />\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n <title>React Hono Val Town Starter

\n );\n}\n\nfunction Sparks() {\n const sparks = Array.from({ length: 14 }, (_, i) => ({\n left: `${(i * 7 + 5) % 100}%`,\n size: 3 + ((i * 5) % 5),\n duration: 8 + ((i * 3) % 7),\n delay: (i * 1.3) % 9,\n }));\n return (\n <>\n {sparks.map((s, i) => (\n \n ))}\n \n );\n}\n\nexport function Login3D() {\n const [email, setEmail] = useState(\"\");\n const [password, setPassword] = useState(\"\");\n const [status, setStatus] = useState(null);\n const tiltRef = useRef(null);\n\n const onMove = useCallback((e: React.MouseEvent) => {\n const el = tiltRef.current;\n if (!el) return;\n const rect = el.getBoundingClientRect();\n const px = (e.clientX - rect.left) / rect.width - 0.5;\n const py = (e.clientY - rect.top) / rect.height - 0.5;\n el.style.transform = `rotateY(${px * 16}deg) rotateX(${-py * 16}deg)`;\n }, []);\n\n const onLeave = useCallback(() => {\n const el = tiltRef.current;\n if (el) el.style.transform = \"rotateY(0deg) rotateX(0deg)\";\n }, []);\n\n const submit = async (e: React.FormEvent) => {\n e.preventDefault();\n setStatus(\"Signing in…\");\n try {\n const res = await fetch(\"/api/login\", {\n method: \"POST\",\n headers: { \"Content-Type\": \"application/json\" },\n body: JSON.stringify({ email, password }),\n });\n const data = await res.json();\n setStatus(res.ok ? `✅ ${data.message}` : `❌ ${data.error}`);\n } catch {\n setStatus(\"❌ Network error\");\n }\n };\n\n return (\n

\n \n \n \n

\n );\n}\n","label",[155,156,64],"frontend","components","pulls","branches",1,"forks","envVars",{"_165":26,"_167":26},"connections",{"_165":26,"_166":26},"count","unfilledCount","emptyCount",{"_32":256,"_13":155,"_62":206,"_42":-5,"_34":35,"_148":159,"_149":85,"_36":257,"_38":26,"_65":253,"_151":-5,"_67":24,"_153":-5,"_186":258,"_17":259},{"_32":251,"_13":156,"_62":147,"_42":206,"_34":35,"_148":159,"_149":85,"_36":252,"_38":26,"_65":253,"_151":-5,"_67":24,"_153":-5,"_186":254,"_17":255},{"_32":243,"_13":244,"_62":245,"_42":147,"_34":35,"_148":246,"_149":85,"_36":247,"_38":159,"_65":66,"_151":248,"_67":24,"_153":-5,"_186":249,"_17":250},{"_32":236,"_13":237,"_62":238,"_42":147,"_34":35,"_148":159,"_149":85,"_36":239,"_38":26,"_65":66,"_151":240,"_67":24,"_153":-5,"_186":241,"_17":242},{"_32":146,"_13":64,"_62":63,"_42":147,"_34":35,"_148":39,"_149":85,"_36":233,"_38":26,"_65":66,"_151":152,"_67":24,"_153":-5,"_186":234,"_17":235},{"_32":226,"_13":227,"_62":228,"_42":206,"_34":35,"_148":159,"_149":85,"_36":229,"_38":26,"_65":21,"_151":230,"_67":24,"_153":-5,"_186":231,"_17":232},{"_32":219,"_13":220,"_62":221,"_42":206,"_34":35,"_148":159,"_149":85,"_36":222,"_38":26,"_65":66,"_151":223,"_67":24,"_153":-5,"_186":224,"_17":225},{"_32":212,"_13":213,"_62":214,"_42":206,"_34":35,"_148":208,"_149":85,"_36":215,"_38":26,"_65":21,"_151":216,"_67":24,"_153":-5,"_186":217,"_17":218},{"_32":203,"_13":204,"_62":205,"_42":206,"_34":35,"_148":111,"_149":85,"_36":207,"_38":208,"_65":66,"_151":209,"_67":24,"_153":-5,"_186":210,"_17":211},{"_32":196,"_13":197,"_62":198,"_42":-5,"_34":35,"_148":159,"_149":85,"_36":199,"_38":26,"_65":21,"_151":200,"_67":24,"_153":-5,"_186":201,"_17":202},{"_32":189,"_13":190,"_62":191,"_42":-5,"_34":35,"_148":159,"_149":85,"_36":192,"_38":26,"_65":21,"_151":193,"_67":24,"_153":-5,"_186":194,"_17":195},{"_32":180,"_13":181,"_62":83,"_42":-5,"_34":35,"_148":182,"_149":85,"_36":183,"_38":159,"_65":184,"_151":185,"_67":24,"_153":14,"_186":187,"_17":188},"2b7e4c96-6ea3-4a3c-b2d5-a9b271388790","index.ts",4,["D",1787994989992],"http","import { parseVal, serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { Hono } from \"npm:hono\";\nimport { Root } from \"./frontend/root.tsx\";\n\nconst app = new Hono();\n\n// Serve the (never-cached) HTML shell at the root /\napp.get(\"/\", (c) => c.html(Root()));\n\n// Serve frontend files at the version-addressed URLs Root() stamps, cached immutably\napp.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path));\n\n// View source redirect\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\n\n// Demo login endpoint — replace with real auth (e.g. better-auth) later\napp.post(\"/api/login\", async (c) => {\n const { email, password } = await c.req.json<{ email?: string; password?: string }>();\n if (!email || !password) {\n return c.json({ error: \"Email and password are required\" }, 400);\n }\n // Placeholder: accept anything for the demo\n return c.json({ message: `Signed in as ${email}` });\n});\n\napp.onError((err) => Promise.reject(err));\n\nexport default app.fetch;\n","children",[],[181],"2ad12647-8876-4190-940d-ad723f552603","README.md","01a04ccd-a074-777d-91f8-104d1af801f7",["D",1787994939443],"# React + Hono Starter\n\nA minimal starter template for building client-side React apps with a Hono\nbackend on Val Town. Click **Remix** to get your own copy.\n\n## Picking a starter\n\n| Starter | When to pick it |\n| --- | --- |\n| [`basic-html-starter`](https://www.val.town/x/templates/basic-html-starter) | Static HTML pages. Sprinkle of vanilla JS. No server-side rendering. |\n| [`hono-jsx-starter`](https://www.val.town/x/templates/hono-jsx-starter) | Dynamic server-rendered HTML with JSX. API routes. No React, no SPA. |\n| **[`react-hono-starter`](https://www.val.town/x/templates/react-hono-starter)** *(you're here)* | Client-side React SPA with a Hono API backend. |\n\n**Want to build UI?** Start writing React components in\n[`frontend/components/`](/frontend/components/). Import them into `App.tsx` and\nyou're good to go. Styling is [Twind](https://twind.style/) — just use Tailwind\nutility classes, zero config.\n\n**Want to add an API?** Add routes in [`index.ts`](/index.ts) (there's a\ncommented-out example). Fetch them from your React components.\n\n## Architecture\n\n```mermaid\ngraph LR\n Browser -->|\"GET /\"| Hono[\"index.ts
(Hono server)\"]\n Hono -->|serves| HTML[\"root.tsx\"]\n HTML -->|loads| Entry[\"index.tsx\"]\n Entry -->|renders| App[\"App.tsx\"]\n App -->|renders| Counter[\"Counter.tsx\"]\n```\n\n## File structure\n\n```\nindex.ts ← Hono backend (serves frontend + API routes)\nfrontend/\n root.tsx ← HTML shell (stamps immutable asset URLs)\n index.tsx ← React entrypoint (mounts )\n favicon.svg ← App icon\n components/\n App.tsx ← Root component (layout + view source link)\n Counter.tsx ← Example component with state\n```\n\n## How it works\n\n1. **`index.ts`** is the HTTP entrypoint — a Hono server that serves the\n frontend and any API routes you add.\n2. **`frontend/root.tsx`** is the HTML shell — it loads Twind and stamps\n immutable asset URLs for the favicon and React entrypoint.\n3. **`frontend/index.tsx`** mounts the React app.\n4. **`frontend/components/App.tsx`** is the root layout — add new components\n alongside it.\n5. **`frontend/components/Counter.tsx`** is an example stateful component —\n replace it with your own!\n\n## Next steps\n\n- Add API routes in `index.ts`\n- Add new components in `frontend/components/`\n- Add a SQLite database — see the\n [React Hono Example](https://www.val.town/x/stevekrouse/reactHonoExample) for\n a full-stack example with database, queries, and shared types\n\nTemplate updates and upgrade paths for existing remixes: [CHANGELOG.md](/CHANGELOG.md)\n",[],[190],"e8d75107-6728-4532-be2d-8dd87ee66e95","CHANGELOG.md","01a04ccd-a074-777d-91f8-0caf743a9ec8",["D",1787994939443],"# Changelog\n\n## 2026-07-30 — Immutable asset caching\n\nFrontend files are now served at version-addressed URLs\n(`/__immutable/45/frontend/index.tsx`) with\n`Cache-Control: public, max-age=31536000, immutable`, so repeat visits load the\nwhole client graph from the browser cache — roughly 3× faster (~665ms → ~157ms\nmeasured). Publishing your val bumps its version, which changes every URL, so\ncaches invalidate automatically. Old-version URLs return 404 after a publish\n(like Next.js build assets); a reload picks up the new version.\n\nWhat changed in the template:\n\n- `frontend/index.html` → [`frontend/root.tsx`](/frontend/root.tsx): the HTML\n shell is now JSX and stamps asset URLs with `immutableFileUrl()`\n- [`index.ts`](/index.ts): serves `Root()` at `/`, and one\n `app.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path))` route\n serves all frontend files\n\n### Upgrading an existing remix\n\nYour copy of this template doesn't update automatically. Two options:\n\n**Minimal (most of the benefit):** point both routes at `serveImmutableFile` —\nyour existing bare URLs redirect into versioned space, the new route serves\nthem, and the whole module graph gets cached (costs one redirect per page view):\n\n```ts\nimport { serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\n\napp.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path));\napp.get(\"/frontend/**/*\", (c) => serveImmutableFile(c.req.path)); // was serveFile\n```\n\n**Full upgrade (also removes the redirect):** three self-contained steps —\nno other files needed. Adjust the ``, favicon, and body of `Root()` to\nmatch your app's existing `index.html`, and stamp anything else your shell\nreferences directly (images, css) with `immutableFileUrl()`.\n\n1. Create `frontend/root.tsx`:\n\n```tsx\n/** @jsxImportSource npm:hono@4/jsx */\nimport { raw } from \"npm:hono@4/html\";\nimport { immutableFileUrl } from \"https://esm.town/v/std/utils/index.ts\";\n\n// The HTML shell for the app. It is never cached, so immutableFileUrl can stamp\n// the current val version into each asset URL — the browser caches those\n// immutably, and publishing the val changes the URLs, refetching exactly once.\nexport function Root() {\n return (\n <>\n {raw(\"<!DOCTYPE html>\")}\n <html lang=\"en\">\n <head>\n <meta charSet=\"UTF-8\" />\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n <title>React Hono Val Town Starter\n

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History · Login3D.tsx