`, 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 Top 5\n

\n\n {rows === null &&

Loading…

}\n {rows?.length === 0 && (\n

No runs yet. Be the first.

\n )}\n\n {rows && rows.length > 0 && (\n

\n \n {MEDALS[i] ?? i + 1}\n \n {row.name}\n {formatDate(row.created_at)}\n {row.score}\n

\n )}\n

\n );\n}\n","label",[157,158,65],"frontend","components","pulls","branches",1,"forks","envVars",{"_167":26,"_169":26},"connections",{"_167":26,"_168":26},"count","unfilledCount","emptyCount",{"_32":269,"_13":268,"_63":263,"_42":-5,"_34":35,"_150":187,"_151":86,"_36":270,"_38":26,"_66":253,"_153":-5,"_68":24,"_155":-5,"_191":271,"_17":272},{"_32":260,"_13":261,"_63":262,"_42":263,"_34":35,"_150":187,"_151":86,"_36":264,"_38":26,"_66":67,"_153":265,"_68":24,"_155":-5,"_191":266,"_17":267},{"_32":256,"_13":157,"_63":211,"_42":-5,"_34":35,"_150":161,"_151":86,"_36":257,"_38":26,"_66":253,"_153":-5,"_68":24,"_155":-5,"_191":258,"_17":259},{"_32":251,"_13":158,"_63":149,"_42":211,"_34":35,"_150":161,"_151":86,"_36":252,"_38":26,"_66":253,"_153":-5,"_68":24,"_155":-5,"_191":254,"_17":255},{"_32":243,"_13":244,"_63":245,"_42":149,"_34":35,"_150":112,"_151":86,"_36":246,"_38":247,"_66":67,"_153":248,"_68":24,"_155":-5,"_191":249,"_17":250},{"_32":234,"_13":235,"_63":236,"_42":149,"_34":35,"_150":237,"_151":86,"_36":238,"_38":239,"_66":67,"_153":240,"_68":24,"_155":-5,"_191":241,"_17":242},{"_32":148,"_13":65,"_63":64,"_42":149,"_34":35,"_150":39,"_151":86,"_36":231,"_38":26,"_66":67,"_153":154,"_68":24,"_155":-5,"_191":232,"_17":233},{"_32":224,"_13":225,"_63":226,"_42":211,"_34":35,"_150":161,"_151":86,"_36":227,"_38":26,"_66":21,"_153":228,"_68":24,"_155":-5,"_191":229,"_17":230},{"_32":217,"_13":218,"_63":219,"_42":211,"_34":35,"_150":161,"_151":86,"_36":220,"_38":26,"_66":67,"_153":221,"_68":24,"_155":-5,"_191":222,"_17":223},{"_32":208,"_13":209,"_63":210,"_42":211,"_34":35,"_150":212,"_151":86,"_36":213,"_38":161,"_66":67,"_153":214,"_68":24,"_155":-5,"_191":215,"_17":216},{"_32":201,"_13":202,"_63":203,"_42":-5,"_34":35,"_150":161,"_151":86,"_36":204,"_38":26,"_66":21,"_153":205,"_68":24,"_155":-5,"_191":206,"_17":207},{"_32":194,"_13":195,"_63":196,"_42":-5,"_34":35,"_150":161,"_151":86,"_36":197,"_38":26,"_66":21,"_153":198,"_68":24,"_155":-5,"_191":199,"_17":200},{"_32":183,"_13":184,"_63":84,"_42":-5,"_34":35,"_150":185,"_151":86,"_36":186,"_38":187,"_66":188,"_153":189,"_68":24,"_155":190,"_191":192,"_17":193},"8092be04-a495-4c29-a077-522b19ca288b","index.ts",11,["D",1789455889033],2,"http","import { parseVal, serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { Hono } from \"npm:hono\";\nimport { Root } from \"./frontend/root.tsx\";\nimport { addScore, topScores } from \"./backend/db.ts\";\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\napp.get(\"/api/scores\", async (c) => c.json({ top: await topScores() }));\n\napp.post(\"/api/scores\", async (c) => {\n const body = await c.req.json().catch(() => null) as\n | { name?: unknown; score?: unknown }\n | null;\n if (!body) return c.json({ error: \"Invalid JSON body\" }, 400);\n\n const name = String(body.name ?? \"\").trim().slice(0, 24) || \"Anonymous\";\n const score = Number(body.score);\n // Well clear of any human 30s run, but still rejects obvious junk.\n if (!Number.isInteger(score) || score < 0 || score > 150) {\n return c.json({ error: \"Invalid score\" }, 400);\n }\n\n return c.json({ top: await addScore(name, score) });\n});\n\n// Unwrap and rethrow Hono errors as the original error\n// If you delete this, all errors will be \"Internal Server Error\"\napp.onError((err) => Promise.reject(err));\n\n// HTTP vals expect an exported \"fetch handler\"\n// This is how you \"run the server\" in Val Town with Hono\nexport default app.fetch;\n","22-multiplier","children",[],[184],"85af1ecc-bdee-4b2c-a287-0f1f6de1cd3d","README.md","01a0a3dc-c647-7481-bcdc-5e16e7579a26",["D",1789455549919],"# 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",[],[195],"09bafdcb-6f11-46ef-b287-a2ec624d191f","CHANGELOG.md","01a0a3dc-c647-7481-bcdc-595098fcdb90",["D",1789455549919],"# 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

History · Leaderboard.tsx