`, 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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{ width: \"2.125in\", height: \"3.375in\" }\n : { width: \"3.375in\", height: \"2.125in\" };\n}\n",["D",1788306708883],"id","a224483e-80a9-4f35-b44a-f0c9763517ff","badge-designer",["D",1788306633045],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Design & print employee ID badges with photo + logo uploads","imageUrl","47bff852-7ea1-433d-9faf-2a7680132995","pinnedFileId","01a05f61-b1a0-7277-97f9-082a47933a03","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","01a05f5d-c5ad-7290-95ed-71716129ed27","tursoName","a224483e80a94f35b44af0c9763517ff","tursoHostname","a224483e80a94f35b44af0c9763517ff-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789526460011],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_111":110,"_119":115},"org",{"_111":110,"_112":113,"_114":115,"_19":66,"_116":117,"_118":31},"branch",{"_13":100,"_38":101,"_54":46,"_102":55,"_103":-5,"_104":-5,"_105":-5,"_106":-5,"_107":-5,"_108":56,"_109":110},"isOwned",19,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","zeppomedio","handle","displayName","Mike Krieger","avatar","https://lh3.googleusercontent.com/a/ACg8ocI-djDvm96gpuqFUp7sWQtCwCs95u94gpjxPb3VdHEwU8QTPA=s96-c","tier","pro","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_54":55,"_38":56,"_42":261,"_58":-5,"_59":31,"_60":61,"_62":61,"_63":64,"_65":-5,"_19":66,"_67":68,"_69":70,"_71":-5,"_72":-5,"_73":74,"_75":76,"_77":78,"_79":80,"_81":262,"_83":-5,"_84":85,"_86":85,"_87":88,"_89":88,"_90":88,"_91":85,"_92":85,"_93":263,"_95":264,"_97":265,"_99":31},"tree",[188,195,197,198,199],"files",[188,189,190,191,192,193,194,195,196,197,198,199],"counts",{"_178":74,"_179":150,"_180":74,"_181":182,"_183":184},"contents",[142,143,144,145,146],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_54":173,"_38":174,"_36":175,"_149":-5,"_45":46,"_44":150,"_151":70,"_42":176,"_13":74,"_39":40,"_41":-5,"_30":31,"_155":-5,"_33":177},{"_54":170,"_38":34,"_36":37,"_149":-5,"_45":46,"_44":14,"_151":70,"_42":171,"_13":74,"_39":40,"_41":-5,"_30":31,"_155":-5,"_33":172},{"_54":164,"_38":165,"_36":166,"_149":-5,"_45":46,"_44":150,"_151":31,"_42":167,"_13":74,"_39":27,"_41":168,"_30":31,"_155":-5,"_33":169},{"_54":158,"_38":159,"_36":160,"_149":-5,"_45":46,"_44":150,"_151":31,"_42":161,"_13":74,"_39":27,"_41":162,"_30":31,"_155":-5,"_33":163},{"_54":147,"_38":148,"_36":68,"_149":-5,"_45":46,"_44":150,"_151":31,"_42":152,"_13":74,"_39":153,"_41":154,"_30":31,"_155":156,"_33":157},"f3deab80-f92b-41ee-a978-e24a8cde2c65","index.ts","parentId",1,"latest",["D",1788306633045],"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","employee-badge-designer",[148],"7bbbe43d-16e4-4733-b55a-03c4923ba791","README.md","01a05f61-b1a0-7277-97f9-0502990a07f0",["D",1788306633045],"# 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",[159],"4c0d70c2-f578-4746-bc9a-3d3360eca56f","CHANGELOG.md","01a05f61-b1a0-7277-97f9-02d9daa73418",["D",1788306633045],"# 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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