`, 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",{"_363":364,"_365":366},"routes/_app.x.$handle.$name",{"_11":12,"_13":14,"_15":16,"_18":19,"_17":-7,"_271":-5,"_20":272,"_22":273,"_274":275,"_276":277,"_26":278,"_24":279,"_280":-5,"_281":-5,"_282":62,"_283":284,"_285":59,"_286":-5,"_287":-5,"_288":289},"routes/_app.x.$handle.$name.branch.$branch.code.$",{"_11":12,"_13":14,"_15":16,"_17":-7,"_18":19,"_20":21,"_22":23,"_24":25,"_26":27,"_28":-5,"_29":-5,"_30":-5,"_31":-5,"_32":-5},"handle","thimbunhuv","name","ecommerce-fullstack","branchName","main","version","path","index.ts","project",{"_33":214,"_13":14,"_45":215,"_216":-5,"_217":62,"_218":219,"_220":219,"_221":222,"_223":-5,"_224":225,"_226":38,"_227":59,"_228":-5,"_229":-5,"_230":78,"_231":232,"_233":234,"_235":236,"_237":238,"_239":-5,"_240":241,"_242":241,"_243":244,"_245":244,"_246":244,"_247":241,"_248":241,"_249":250,"_251":252,"_253":254,"_255":62},"tree",[52,53,54,55,56,57],"file",{"_33":34,"_35":36,"_37":38,"_13":19,"_39":40,"_41":42,"_17":43,"_44":-5,"_45":46,"_47":48,"_49":50,"_18":51},"contents",[],"upstream","pull","ahead","behind","envVars","id","0ed376b4-0951-4732-965d-7e23e2ea3bb0","branchId","6b84f907-9e8f-45d7-a71c-56a2a983dc31","fileId","01a08fd2-faaf-742b-b80a-89f8be99ffa6","content","import { parseVal, serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { Hono } from \"npm:hono\";\nimport { Root } from \"./frontend/root.tsx\";\nimport { api } from \"./api/routes.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// View source redirect\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\n\n// API routes\napp.route(\"/api\", api);\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","fileType","http",1,"parentId","createdAt",["D",1789119406023],"branchVersion",5,"label","thimbunhuv-ecommerce",[19],{"_33":199,"_13":200,"_37":201,"_44":-5,"_35":36,"_47":202,"_58":59,"_45":203,"_17":78,"_41":86,"_39":-5,"_61":62,"_49":-5,"_63":204,"_18":205},{"_33":183,"_13":184,"_37":185,"_44":-5,"_35":36,"_47":186,"_58":59,"_45":187,"_17":78,"_41":86,"_39":-5,"_61":62,"_49":-5,"_63":188,"_18":189},{"_33":82,"_13":83,"_37":84,"_44":-5,"_35":36,"_47":43,"_58":59,"_45":85,"_17":78,"_41":86,"_39":-5,"_61":62,"_49":-5,"_63":87,"_18":88},{"_33":74,"_13":75,"_37":76,"_44":-5,"_35":36,"_47":43,"_58":59,"_45":77,"_17":78,"_41":24,"_39":79,"_61":62,"_49":-5,"_63":80,"_18":81},{"_33":66,"_13":67,"_37":68,"_44":-5,"_35":36,"_47":69,"_58":59,"_45":70,"_17":43,"_41":24,"_39":71,"_61":62,"_49":-5,"_63":72,"_18":73},{"_33":34,"_13":19,"_37":38,"_44":-5,"_35":36,"_47":48,"_58":59,"_45":60,"_17":43,"_41":42,"_39":40,"_61":62,"_49":50,"_63":64,"_18":65},"latest",true,["D",1789119406023],"deleted",false,"children",[],[19],"84c5ac83-ef78-4caa-b847-a733e7845ca4","README.md","01a08fd2-faaf-742b-b80a-850b9087b214",13,["D",1789119492626],"# 🛍️ Fullstack Ecommerce (Hono + React + SQLite)\n\nA fullstack ecommerce demo on Val Town. Val Town runs Deno (TypeScript), not\nPython, so this uses **Hono** — a lightweight web framework with the same\nroute/middleware feel as FastAPI — instead of FastAPI itself.\n\n[Open the shop](url:index.ts)\n\n## Stack\n\n- **Backend**: Hono REST API (`api/routes.ts`), cookie-based session cart\n- **Database**: Val Town SQLite (`db/schema.ts`) — products, cart, orders, order_items\n- **Frontend**: Client-side React SPA (`frontend/`), Twind for styling\n\n## Architecture\n\n```mermaid\ngraph LR\n Browser -->|GET /| Hono[\"index.ts (Hono)\"]\n Hono -->|serves| Root[\"frontend/root.tsx\"]\n Root -->|loads| App[\"frontend/components/App.tsx\"]\n App --> ProductList\n App --> CartPanel\n App --> Checkout\n Browser -.->|fetch /api/*| API[\"api/routes.ts\"]\n API --> DB[(SQLite)]\n```\n\n## API routes\n\n| Method | Path | Description |\n| --- | --- | --- |\n| GET | `/api/products` | List all products |\n| GET | `/api/products/:id` | Get one product |\n| GET | `/api/cart` | Get current session's cart |\n| POST | `/api/cart` | Add item to cart `{ productId, quantity }` |\n| PATCH | `/api/cart/:productId` | Update quantity `{ quantity }` (0 removes) |\n| DELETE | `/api/cart/:productId` | Remove item from cart |\n| POST | `/api/checkout` | Place order `{ name, email }`, clears cart |\n| GET | `/api/orders/:id` | Get an order + its line items |\n\n## File structure\n\n```\nindex.ts ← Hono entrypoint (serves frontend + /api)\napi/routes.ts ← All REST API routes\ndb/schema.ts ← SQLite schema + seed data\nfrontend/\n root.tsx ← HTML shell\n index.tsx ← React entrypoint\n lib/api.ts ← Typed fetch client for the API\n components/\n App.tsx ← Root layout / view router\n ProductList.tsx ← Product grid\n CartPanel.tsx ← Cart sidebar\n Checkout.tsx ← Checkout form\n OrderConfirmation.tsx ← Post-order confirmation\n```\n\n## Next steps\n\n- Add product images/categories\n- Add an admin view to manage inventory\n- Add auth so orders are tied to real user accounts instead of a cart cookie\n",[],[67],"8fa491da-7567-43d0-8e01-e9d19fff6f8f","CHANGELOG.md","01a08fd2-faaf-742b-b80a-825098e8b7ab",["D",1789119363697],0,"# 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