`, 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 Clicked\n setCount((c) => c + 1)}\n class=\"bg-blue-500 hover:bg-blue-600 text-white font-medium px-4 py-2 rounded-lg transition-colors cursor-pointer\"\n >\n {count}\n \n times\n

\n );\n}\n","label",[160,161,69],"frontend","components","pulls","branches","forks","envVars",{"_169":26,"_171":26},"connections",{"_169":26,"_170":26},"count","unfilledCount","emptyCount",{"_32":271,"_13":262,"_67":256,"_42":-5,"_34":35,"_153":272,"_154":89,"_36":273,"_38":26,"_70":246,"_156":-5,"_72":24,"_158":-5,"_192":274,"_17":275},{"_32":263,"_13":264,"_67":265,"_42":256,"_34":35,"_153":266,"_154":89,"_36":267,"_38":26,"_70":21,"_156":268,"_72":24,"_158":-5,"_192":269,"_17":270},{"_32":253,"_13":254,"_67":255,"_42":256,"_34":35,"_153":257,"_154":89,"_36":258,"_38":189,"_70":21,"_156":259,"_72":24,"_158":-5,"_192":260,"_17":261},{"_32":249,"_13":160,"_67":212,"_42":-5,"_34":35,"_153":39,"_154":89,"_36":250,"_38":26,"_70":246,"_156":-5,"_72":24,"_158":-5,"_192":251,"_17":252},{"_32":244,"_13":161,"_67":152,"_42":212,"_34":35,"_153":39,"_154":89,"_36":245,"_38":26,"_70":246,"_156":-5,"_72":24,"_158":-5,"_192":247,"_17":248},{"_32":235,"_13":236,"_67":237,"_42":152,"_34":35,"_153":238,"_154":89,"_36":239,"_38":240,"_70":71,"_156":241,"_72":24,"_158":-5,"_192":242,"_17":243},{"_32":151,"_13":69,"_67":68,"_42":152,"_34":35,"_153":39,"_154":89,"_36":232,"_38":26,"_70":71,"_156":157,"_72":24,"_158":-5,"_192":233,"_17":234},{"_32":225,"_13":226,"_67":227,"_42":212,"_34":35,"_153":39,"_154":89,"_36":228,"_38":26,"_70":21,"_156":229,"_72":24,"_158":-5,"_192":230,"_17":231},{"_32":218,"_13":219,"_67":220,"_42":212,"_34":35,"_153":39,"_154":89,"_36":221,"_38":26,"_70":71,"_156":222,"_72":24,"_158":-5,"_192":223,"_17":224},{"_32":209,"_13":210,"_67":211,"_42":212,"_34":35,"_153":213,"_154":89,"_36":214,"_38":189,"_70":71,"_156":215,"_72":24,"_158":-5,"_192":216,"_17":217},{"_32":202,"_13":203,"_67":204,"_42":-5,"_34":35,"_153":39,"_154":89,"_36":205,"_38":26,"_70":21,"_156":206,"_72":24,"_158":-5,"_192":207,"_17":208},{"_32":195,"_13":196,"_67":197,"_42":-5,"_34":35,"_153":39,"_154":89,"_36":198,"_38":26,"_70":21,"_156":199,"_72":24,"_158":-5,"_192":200,"_17":201},{"_32":185,"_13":186,"_67":87,"_42":-5,"_34":35,"_153":187,"_154":89,"_36":188,"_38":189,"_70":190,"_156":191,"_72":24,"_158":-5,"_192":193,"_17":194},"6a8d79c1-9b59-4c8e-abed-33a1ef5c3209","index.ts",8,["D",1789325628627],2,"http","import { parseVal, serveFile, 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\napp.get(\"/\", (c) => c.html(Root()));\napp.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path));\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\napp.get(\"/frontend/*\", (c) => serveFile(c.req.path));\napp.get(\"/data/*\", (c) => serveFile(c.req.path));\n\napp.get(\"/api/translate\", async (c) => {\n const q = (c.req.query(\"q\") || \"\").trim();\n if (!q) return c.json({ error: \"Missing q\" }, 400);\n try {\n const r = await fetch(`https://api.mymemory.translated.net/get?q=${encodeURIComponent(q)}&langpair=de|ru`);\n const data = await r.json();\n const translated = data?.responseData?.translatedText || \"\";\n return c.json({ source: q, translation: translated });\n } catch (e) {\n return c.json({ error: \"Translation service unavailable\" }, 502);\n }\n});\n\napp.onError((err) => Promise.reject(err));\nexport default app.fetch;\n","children",[],[186],"ff7b69e8-3dd0-48d8-b61f-4364fd4b70b4","README.md","01a09c03-3284-7774-b28c-5f66369bbf24",["D",1789323849335],"# 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",[],[196],"34bf620a-b868-49cb-a033-3d034d489dbf","CHANGELOG.md","01a09c03-3284-7774-b28c-599d301570a4",["D",1789323849335],"# 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 · Counter.tsx