`, 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

[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_326":327,"_328":329},"routes/_app.x.$handle.$name",{"_105":104,"_37":50,"_114":95,"_32":115,"_13":14,"_116":-5,"_11":117,"_118":119,"_120":121,"_122":123,"_124":125,"_26":-5,"_126":-5,"_127":-5,"_128":30,"_129":130,"_131":64,"_132":-5,"_133":-5,"_134":135},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":18,"_19":-5},"project",{"_48":49,"_37":50,"_43":51,"_52":-5,"_53":30,"_54":55,"_56":55,"_57":58,"_59":-5,"_19":60,"_61":62,"_63":64,"_65":-5,"_66":-5,"_67":68,"_69":70,"_71":72,"_73":74,"_75":76,"_77":-5,"_78":79,"_80":79,"_81":82,"_83":82,"_84":82,"_85":79,"_86":79,"_87":88,"_89":90,"_91":92,"_93":30},"version",8,"changes",[25],"aiChatInfo",{"_20":21,"_22":-5,"_23":-5,"_24":-5},"userId","aiChatMessageId","d23aafb7-1a20-4a77-9913-b7610c9f6db4","aiChatThreadId","aiChatThreadUserId","aiChatThreadTitle",{"_26":27,"_28":-7,"_29":30,"_31":30,"_32":33,"_34":33},"file",{"_35":36,"_37":38,"_39":40,"_41":42,"_43":44,"_45":14,"_46":47,"_29":30},"previous","deleted",false,"deletedHere","path","frontend/components/ImageUpload.tsx","latestPath","fileId","529720ba-a660-11f1-bfc1-1607ee4eb77e","name","ImageUpload.tsx","fileType","script","content","/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { useRef, useState } from \"https://esm.sh/react@18.2.0\";\nimport { uploadImage } from \"../lib/images.ts\";\n\ninterface Props {\n label: string;\n hint: string;\n kind: \"photo\" | \"logo\";\n value: string | null;\n onChange: (url: string | null) => void;\n}\n\nexport function ImageUpload({ label, hint, kind, value, onChange }: Props) {\n const input = useRef(null);\n const [busy, setBusy] = useState(false);\n const [error, setError] = useState(null);\n const [over, setOver] = useState(false);\n\n async function accept(file: File | undefined) {\n if (!file) return;\n setBusy(true);\n setError(null);\n try {\n onChange(await uploadImage(file, kind));\n } catch (e) {\n setError(e instanceof Error ? e.message : String(e));\n } finally {\n setBusy(false);\n }\n }\n\n return (\n

\n {label}\n {value && (\n onChange(null)}\n className=\"text-xs text-gray-400 hover:text-red-600 cursor-pointer\"\n >\n remove\n \n )}\n

\n input.current?.click()}\n onDragOver={(e) => {\n e.preventDefault();\n setOver(true);\n }}\n onDragLeave={() => setOver(false)}\n onDrop={(e) => {\n e.preventDefault();\n setOver(false);\n accept(e.dataTransfer.files?.[0]);\n }}\n className={`flex items-center gap-3 rounded-lg border-2 border-dashed p-2.5 cursor-pointer transition-colors ${\n over ? \"border-blue-500 bg-blue-50\" : \"border-gray-200 hover:border-gray-300 bg-gray-50\"\n }`}\n >\n

\n {value\n ? $\"\"$ \n : {kind === \"photo\" ? \"🙂\" : \"🏷️\"}}\n

{busy ? \"Uploading…\" : value ? \"Replace image\" : \"Click or drop an image\"}

{hint}

\n {error &&

{error}

}\n {\n accept(e.target.files?.[0]);\n e.target.value = \"\";\n }}\n />\n \n );\n}\n","createdAt",["D",1788306805782],"branchVersion","branchId","e7c3af8d-498f-46f9-87e1-9baad6e49d01","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",{"_105":104,"_113":109},"org",{"_105":104,"_106":107,"_108":109,"_19":60,"_110":111,"_112":30},"branch",{"_13":94,"_37":95,"_48":47,"_96":49,"_97":-5,"_98":-5,"_99":-5,"_100":-5,"_101":-5,"_102":50,"_103":104},"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",{"_48":49,"_37":50,"_43":321,"_52":-5,"_53":30,"_54":55,"_56":55,"_57":58,"_59":-5,"_19":60,"_61":62,"_63":64,"_65":-5,"_66":-5,"_67":68,"_69":70,"_71":72,"_73":74,"_75":322,"_77":-5,"_78":79,"_80":79,"_81":82,"_83":82,"_84":82,"_85":79,"_86":79,"_87":323,"_89":324,"_91":325,"_93":30},"tree",[194,197,208,210,211,212],"files",[194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212],"counts",{"_184":68,"_185":148,"_186":68,"_187":188,"_189":190},"contents",[136,137,138,139,140,141],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_48":178,"_37":179,"_35":180,"_144":-5,"_46":47,"_45":181,"_146":64,"_43":182,"_13":68,"_39":171,"_41":-5,"_29":30,"_151":-5,"_32":183},{"_48":173,"_37":174,"_35":175,"_144":-5,"_46":47,"_45":148,"_146":64,"_43":176,"_13":68,"_39":171,"_41":-5,"_29":30,"_151":-5,"_32":177},{"_48":166,"_37":167,"_35":168,"_144":-5,"_46":47,"_45":169,"_146":64,"_43":170,"_13":68,"_39":171,"_41":-5,"_29":30,"_151":-5,"_32":172},{"_48":160,"_37":161,"_35":162,"_144":-5,"_46":47,"_45":148,"_146":30,"_43":163,"_13":68,"_39":26,"_41":164,"_29":30,"_151":-5,"_32":165},{"_48":154,"_37":155,"_35":156,"_144":-5,"_46":47,"_45":148,"_146":30,"_43":157,"_13":68,"_39":26,"_41":158,"_29":30,"_151":-5,"_32":159},{"_48":142,"_37":143,"_35":62,"_144":-5,"_46":47,"_45":145,"_146":64,"_43":147,"_13":148,"_39":149,"_41":150,"_29":30,"_151":152,"_32":153},"04510882-c9af-4c2a-a0b2-f02d2aad22c5","index.ts","parentId",5,"latest",["D",1788306726981],1,"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 { deleteBadge, listBadges, saveBadge } from \"./backend/badges.ts\";\nimport { handleUpload, serveImage } from \"./backend/uploads.ts\";\nimport type { Badge } from \"./shared/types.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// --- Image uploads (photos & company logos) ---\napp.post(\"/api/upload\", (c) => handleUpload(c.req.raw));\napp.get(\"/img/:file\", (c) => serveImage(c.req.param(\"file\")));\n\n// --- Saved badge roster ---\napp.get(\"/api/badges\", async (c) => c.json(await listBadges()));\napp.post(\"/api/badges\", async (c) => c.json(await saveBadge(await c.req.json() as Badge)));\napp.delete(\"/api/badges/:id\", async (c) => {\n await deleteBadge(c.req.param(\"id\"));\n return c.json({ ok: true });\n});\n\n// View source redirect\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\n\n// Unwrap and rethrow Hono errors as the original error\napp.onError((err) => Promise.reject(err));\n\nexport default app.fetch;\n","label","employee-badge-designer",[143],"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",[155],"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

Diff · v8