`, 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",{"_233":234,"_235":236},"routes/_app.x.$handle.$name",{"_99":98,"_32":45,"_108":89,"_27":109,"_13":14,"_110":-5,"_11":111,"_112":113,"_114":115,"_116":117,"_118":119,"_20":-5,"_120":-5,"_121":-5,"_122":25,"_123":124,"_125":58,"_126":-5,"_127":-5,"_128":129},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":-5,"_18":-5},"project",{"_43":44,"_32":45,"_38":46,"_47":-5,"_48":25,"_49":50,"_51":50,"_52":53,"_54":-5,"_18":55,"_56":31,"_57":58,"_59":-5,"_60":-5,"_61":62,"_63":64,"_65":66,"_67":68,"_69":70,"_71":-5,"_72":73,"_74":73,"_75":76,"_77":76,"_78":76,"_79":73,"_80":73,"_81":82,"_83":84,"_85":86,"_87":25},"version",5,"changes",[19],"aiChatInfo","userId",{"_20":21,"_22":23,"_24":25,"_26":25,"_27":28,"_29":28},"file",{"_30":31,"_32":28,"_33":34,"_35":37,"_38":39,"_40":14,"_41":42,"_24":25},"previous",{"_30":31,"_32":28,"_33":34,"_35":36},"deleted",false,"deletedHere","path","index.ts","latestPath","fileId","01a0962c-0cbb-76d7-bb8b-bb738a7a284c","name","fileType","http","content","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","import { parseVal, serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\nimport { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { Hono } from \"npm:hono\";\nimport { Root } from \"./frontend/root.tsx\";\n\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS queue (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n text TEXT NOT NULL,\n image_key TEXT,\n image_type TEXT,\n created_at TEXT NOT NULL,\n posted_at TEXT\n)`);\n\nconst app = new Hono();\n\nfunction checkPin(pin: string | undefined | null): boolean {\n const expected = Deno.env.get(\"QUEUE_PIN\");\n return !!expected && pin === expected;\n}\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));\n\napp.get(\"/api/queue\", async (c) => {\n const result = await sqlite.execute(\n \"SELECT id, text, image_key, created_at FROM queue WHERE posted_at IS NULL ORDER BY created_at ASC\",\n );\n return c.json({\n items: result.rows.map((r: any) => ({\n id: r.id,\n text: r.text,\n hasImage: !!r.image_key,\n createdAt: r.created_at,\n })),\n });\n});\n\napp.post(\"/api/queue\", async (c) => {\n const form = await c.req.formData();\n const pin = form.get(\"pin\");\n if (!checkPin(typeof pin === \"string\" ? pin : null)) {\n return c.text(\"Wrong PIN\", 403);\n }\n const text = form.get(\"text\");\n if (typeof text !== \"string\" || !text.trim()) {\n return c.text(\"Post text is required\", 400);\n }\n const image = form.get(\"image\");\n let imageKey: string | null = null;\n let imageType: string | null = null;\n if (image instanceof File && image.size > 0) {\n imageKey = `post-image-${crypto.randomUUID()}`;\n imageType = image.type || \"image/jpeg\";\n await blob.set(imageKey, await image.arrayBuffer());\n }\n await sqlite.execute({\n sql: \"INSERT INTO queue (text, image_key, image_type, created_at) VALUES (?, ?, ?, ?)\",\n args: [text.trim(), imageKey, imageType, new Date().toISOString()],\n });\n return c.json({ ok: true });\n});\n\napp.delete(\"/api/queue/:id\", async (c) => {\n const pin = c.req.header(\"x-pin\");\n if (!checkPin(pin)) {\n return c.text(\"Wrong PIN\", 403);\n }\n const id = c.req.param(\"id\");\n const result = await sqlite.execute({\n sql: \"SELECT image_key FROM queue WHERE id = ?\",\n args: [id],\n });\n const row = result.rows[0] as any;\n if (row?.image_key) {\n await blob.delete(row.image_key).catch(() => {});\n }\n await sqlite.execute({ sql: \"DELETE FROM queue WHERE id = ?\", args: [id] });\n return c.json({ ok: true });\n});\n\napp.get(\"/api/image/:id\", async (c) => {\n const id = c.req.param(\"id\");\n const result = await sqlite.execute({\n sql: \"SELECT image_key, image_type FROM queue WHERE id = ?\",\n args: [id],\n });\n const row = result.rows[0] as any;\n if (!row?.image_key) return c.text(\"Not found\", 404);\n const res = await blob.get(row.image_key);\n return new Response(res.body, {\n headers: { \"content-type\": row.image_type ?? \"image/jpeg\" },\n });\n});\n\napp.onError((err) => Promise.reject(err));\n\nexport default app.fetch;\n","createdAt",["D",1789225977333],"branchVersion","branchId","cc4f23cf-2565-4b05-9c0d-c68e88cece52","id","9781b42e-8254-4841-a980-857ca0007434","alexa-bluesky-autopost",["D",1789225864214],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Queue posts with images, auto-posts one per day to Bluesky","imageUrl","051b2cc5-9320-44ef-88e7-826bfa8daa60","pinnedFileId","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","019ee5b5-1072-70b4-8a0f-c844ad002ea1","tursoName","9781b42e82544841a980857ca0007434","tursoHostname","9781b42e82544841a980857ca0007434-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789573271003],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_99":98,"_107":103},"org",{"_99":98,"_100":101,"_102":103,"_18":55,"_104":105,"_106":25},"branch",{"_13":88,"_32":89,"_43":42,"_90":44,"_91":-5,"_92":-5,"_93":-5,"_94":-5,"_95":-5,"_96":45,"_97":98},"isOwned",6,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","unlikelyarchivist","handle","displayName","Eryn Montgomery","avatar","https://lh3.googleusercontent.com/a/ACg8ocJEkHIy674nn2OrWifP7cPPXWj2A5ftzagptlIz_AXo3OPt_A=s96-c","tier","free","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_43":44,"_32":45,"_38":228,"_47":-5,"_48":25,"_49":50,"_51":50,"_52":53,"_54":-5,"_18":55,"_56":31,"_57":58,"_59":-5,"_60":-5,"_61":62,"_63":64,"_65":66,"_67":68,"_69":229,"_71":-5,"_72":73,"_74":73,"_75":76,"_77":76,"_78":76,"_79":73,"_80":73,"_81":230,"_83":231,"_85":232,"_87":25},"tree",[170,176,177,178],"files",[170,171,172,173,174,175,176,177,178],"counts",{"_159":62,"_160":138,"_161":62,"_162":163,"_164":165},"contents",[130,131,132,133],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_43":153,"_32":154,"_30":155,"_135":-5,"_41":42,"_40":138,"_136":58,"_38":156,"_13":62,"_33":157,"_35":-5,"_24":25,"_139":-5,"_27":158},{"_43":147,"_32":148,"_30":149,"_135":-5,"_41":42,"_40":138,"_136":58,"_38":150,"_13":62,"_33":20,"_35":151,"_24":25,"_139":-5,"_27":152},{"_43":141,"_32":142,"_30":143,"_135":-5,"_41":42,"_40":138,"_136":58,"_38":144,"_13":62,"_33":20,"_35":145,"_24":25,"_139":-5,"_27":146},{"_43":134,"_32":28,"_30":31,"_135":-5,"_41":42,"_40":14,"_136":58,"_38":137,"_13":138,"_33":34,"_35":37,"_24":25,"_139":-5,"_27":140},"d77a973d-8997-4b6e-aa99-cea9fb2e5bbf","parentId","latest",["D",1789225977333],1,"label",[28],"2d64ff24-8f78-4242-bd9d-e8e5be7b89f5","README.md","01a0962c-0cbb-76d7-bb8b-b5b7292f6cf9",["D",1789225864214],"# 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",[142],"6c7e8447-80f8-40de-a12c-6226b11dd707","CHANGELOG.md","01a0962c-0cbb-76d7-bb8b-b3d606a540da",["D",1789225864214],"# 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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