`, 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

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\"?\";\n reader.releaseLock();\n return `OK (${ct})`;\n } catch (e) {\n return `BŁĄD: ${(e as Error).name}`;\n } finally {\n clearTimeout(timer);\n }\n}\n\nconst results: { name: string; id: string; status: string }[] = [];\nfor (const s of STATIONS) {\n process.stdout.write(` sprawdzam: ${s.name}... `);\n const status = await check(s.stream);\n results.push({ name: s.name, id: s.id, status });\n console.log(status);\n}\n\nconsole.log(\"\\n=== PODSUMOWANIE (działające) ===\");\nfor (const r of results) {\n if (r.status.startsWith(\"OK\")) console.log(`${r.id} ${r.name} — ${r.status}`);\n}\nconsole.log(\"\\n=== NIEDZIAŁAJĄCE ===\");\nfor (const r of results) {\n if (!r.status.startsWith(\"OK\")) console.log(`${r.id} ${r.name} — ${r.status}`);\n}\n","createdAt",["D",1789317856084],"branchVersion","branchId","26a9cea8-03a5-4dee-ab96-5b9583a81dac","id","e3e11001-2912-48b9-ac7c-6832ffa544ef","radio-app",["D",1789317738487],"deletedAt","legacyEnvVars",false,"privacy","public","httpPrivacy","description","Minimalny mobilny odtwarzacz polskich stacji radiowych","imageUrl","5dd5cdfa-b36a-42e1-a911-81ba86e3b64c","pinnedFileId","01a09ba5-f0b0-766b-99ae-1c7a57d8f892","pinPreview","pinMigrated","screenshotVersion","likeCount",0,"orgId","01a09aab-d118-725d-b44f-c12d328bfdc6","tursoName","e3e11001291248b9ac7c6832ffa544ef","tursoHostname","e3e11001291248b9ac7c6832ffa544ef-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789492268774],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_105":104,"_113":109},"org",{"_105":104,"_106":107,"_108":109,"_19":61,"_110":111,"_112":54},"branch",{"_13":94,"_38":95,"_48":47,"_96":49,"_97":-5,"_98":-5,"_99":-5,"_100":-5,"_101":-5,"_102":50,"_103":104},"isOwned",89,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","dominik1","handle","displayName","Dominik","avatar","","tier","free","canRestrictVals","profileImageUrl","branchName","adoptOrgId",{"_48":49,"_38":50,"_43":262,"_52":-5,"_53":54,"_55":56,"_57":56,"_58":59,"_60":-5,"_19":61,"_62":63,"_64":31,"_65":-5,"_66":-5,"_67":68,"_69":70,"_71":72,"_73":74,"_75":263,"_77":-5,"_78":79,"_80":79,"_81":82,"_83":82,"_84":82,"_85":79,"_86":79,"_87":264,"_89":265,"_91":266,"_93":54},"tree",[185,192,194,195,196],"files",[185,186,187,188,189,190,191,192,193,194,195,196],"counts",{"_175":68,"_176":143,"_177":68,"_178":179,"_180":181},"contents",[135,136,137,138,139],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_48":170,"_38":171,"_36":172,"_142":-5,"_46":47,"_45":143,"_144":31,"_43":173,"_13":68,"_39":168,"_41":-5,"_30":54,"_148":-5,"_33":174},{"_48":163,"_38":164,"_36":165,"_142":-5,"_46":47,"_45":166,"_144":31,"_43":167,"_13":68,"_39":168,"_41":-5,"_30":54,"_148":-5,"_33":169},{"_48":157,"_38":158,"_36":159,"_142":-5,"_46":47,"_45":143,"_144":31,"_43":160,"_13":68,"_39":26,"_41":161,"_30":54,"_148":-5,"_33":162},{"_48":151,"_38":152,"_36":153,"_142":-5,"_46":47,"_45":143,"_144":54,"_43":154,"_13":68,"_39":26,"_41":155,"_30":54,"_148":-5,"_33":156},{"_48":140,"_38":141,"_36":63,"_142":-5,"_46":47,"_45":143,"_144":54,"_43":145,"_13":68,"_39":146,"_41":147,"_30":54,"_148":149,"_33":150},"9df33c49-04d6-4aa2-9956-a8e0aff8a1ee","index.ts","parentId",1,"latest",["D",1789317738487],"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// Add your API routes here\n// app.get(\"/api/data\", c => c.json({ hello: \"world\" }));\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","label","radio-pl",[141],"92aaefc4-e89d-4579-93d3-cd52417f0d60","README.md","01a09ba5-f0b0-766b-99ae-1becdd352fcb",["D",1789317738487],"# 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",[152],"b0a8eb41-6bfe-4c12-ab32-41c3780b4f4d","CHANGELOG.md","01a09ba5-f0b0-766b-99ae-14a493a1cbdf",["D",1789317738487],"# 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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