`, 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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{ type Category, TOWNS } from \"../shared/types.ts\";\n\nconst TZ = \"Europe/Warsaw\";\n\n// ---------- dates (always Europe/Warsaw, as plain YYYY-MM-DD / HH:MM strings) ----------\n\nconst pad = (n: number) => String(n).padStart(2, \"0\");\n\nexport function warsawParts(d: Date = new Date()) {\n const parts = new Intl.DateTimeFormat(\"en-CA\", {\n timeZone: TZ,\n year: \"numeric\",\n month: \"2-digit\",\n day: \"2-digit\",\n hour: \"2-digit\",\n minute: \"2-digit\",\n hourCycle: \"h23\",\n }).formatToParts(d);\n const get = (t: string) => parts.find((p) => p.type === t)?.value ?? \"00\";\n return { date: `${get(\"year\")}-${get(\"month\")}-${get(\"day\")}`, time: `${get(\"hour\")}:${get(\"minute\")}` };\n}\n\nexport const warsawToday = () => warsawParts().date;\n\nexport function addDays(date: string, days: number): string {\n const d = new Date(`${date}T12:00:00Z`);\n d.setUTCDate(d.getUTCDate() + days);\n return d.toISOString().slice(0, 10);\n}\n\n// 0 = Sunday … 6 = Saturday\nexport const weekday = (date: string) => new Date(`${date}T12:00:00Z`).getUTCDay();\n\n// ISO timestamp with offset → local date and time in Zamość\nexport function fromIso(iso: string): { date: string; time: string | null } | null {\n const d = new Date(iso);\n if (isNaN(d.getTime())) return null;\n // date-only strings carry no time\n if (/^\\d{4}-\\d{2}-\\d{2}$/.test(iso.trim())) return { date: iso.trim(), time: null };\n return warsawParts(d);\n}\n\nconst MONTHS: Record = {\n stycznia: 1, styczeń: 1, styczen: 1,\n lutego: 2, luty: 2,\n marca: 3, marzec: 3,\n kwietnia: 4, kwiecień: 4, kwiecien: 4,\n maja: 5, maj: 5,\n czerwca: 6, czerwiec: 6,\n lipca: 7, lipiec: 7,\n sierpnia: 8, sierpień: 8, sierpien: 8,\n września: 9, wrzesień: 9, wrzesnia: 9, wrzesien: 9,\n października: 10, październik: 10, pazdziernika: 10,\n listopada: 11, listopad: 11,\n grudnia: 12, grudzień: 12, grudzien: 12,\n};\n\n// \"Sobota, 19 września 2026, 16:00\" or \"5 grudnia 2026 r. o godz. 16.00\"\nexport function parsePolishDate(text: string): { date: string; time: string | null } | null {\n const m = text.toLowerCase().match(/(\\d{1,2})\\s+([a-ząćęłńóśźż]+)\\s+(\\d{4})/);\n if (!m || !MONTHS[m[2]]) return null;\n return { date: `${m[3]}-${pad(MONTHS[m[2]])}-${pad(Number(m[1]))}`, time: findTime(text.slice(m.index! + m[0].length)) };\n}\n\n// \"27.09.2026\" (optionally followed by a time)\nexport function parseDotDate(text: string): { date: string; time: string | null } | null {\n const m = text.match(/(\\d{1,2})\\.(\\d{1,2})\\.(\\d{4})/);\n if (!m) return null;\n return { date: `${m[3]}-${pad(Number(m[2]))}-${pad(Number(m[1]))}`, time: findTime(text.slice(m.index! + m[0].length)) };\n}\n\nexport function findTime(text: string): string | null {\n const m = text.match(/(?:^|[^\\d.])([01]?\\d|2[0-3])[:.]([0-5]\\d)(?!\\d)/);\n return m ? `${pad(Number(m[1]))}:${m[2]}` : null;\n}\n\nexport const isDate = (s: unknown): s is string => typeof s === \"string\" && /^\\d{4}-\\d{2}-\\d{2}$/.test(s);\nexport const isTime = (s: unknown): s is string => typeof s === \"string\" && /^([01]\\d|2[0-3]):[0-5]\\d$/.test(s);\n\n// ---------- text ----------\n\nexport function clean(text: string | null | undefined, max = 600): string | null {\n if (!text) return null;\n const t = text.replace(/\\s+/g, \" \").trim();\n if (!t) return null;\n return t.length > max ? `${t.slice(0, max - 1).trimEnd()}…` : t;\n}\n\nexport function fold(text: string): string {\n return text.toLowerCase().normalize(\"NFD\").replace(/[̀-ͯ]/g, \"\").replace(/ł/g, \"l\");\n}\n\n// Same event from two sites → same key: folded title letters + date\nexport function dedupKey(title: string, date: string): string {\n const words = fold(title)\n .replace(/[„”\"'«»]/g, \"\")\n .replace(/[^a-z0-9]+/g, \" \")\n .split(\" \")\n .filter((w) => w.length > 1 && ![\"spektakl\", \"koncert\", \"komedia\", \"kabaret\", \"w\", \"we\", \"na\", \"i\"].includes(w));\n return `${date}:${words.join(\"\").slice(0, 40)}`;\n}\n\n// ---------- town ----------\n\nexport function guessTown(text: string, fallback = \"Zamość\"): string {\n const f = fold(text);\n for (const town of TOWNS) {\n const stem = fold(town).slice(0, Math.max(6, fold(town).length - 2));\n if (f.includes(stem)) return town;\n }\n return fallback;\n}\n\n// ---------- category ----------\n\nconst RULES: [Category, RegExp][] = [\n [\"kino\", /\\b(seans|film|kino|projekcj)/],\n [\"dzieci\", /\\b(dla dzieci|dzieci|rodzinn|bajk|maluch|przedszkol|mali |malego|psi patrol|animowan)/],\n [\"kabaret\", /\\b(kabaret|stand-?up|stand up|improwizac)/],\n [\"teatr\", /\\b(spektakl|teatr|komedi|sztuk|monodram|opera|operetk|musical|balet)/],\n [\"sport\", /\\b(mecz|turniej|bieg|zawody|liga|hetman|rajd|maraton|siatkow|pilk|trening|rower)/],\n [\"koncert\", /\\b(koncert|festiwal muzy|recital|orkiestr|filharmoni|jazz|rock|disco|muzyk|zespol|piosen|chor|dj)/],\n [\"wystawa\", /\\b(wystaw|wernisaz|ekspozycj|galeri|muzeum)/],\n [\"festyn\", /\\b(festyn|piknik|dozynk|swieto|jarmark|festiwal smak|dni miasta|biesiad|odpust|zlot)/],\n [\"warsztaty\", /\\b(warsztat|kurs|szkoleni|lekcj|laboratorium|nauka)/],\n [\"spotkanie\", /\\b(spotkani|wyklad|konferencj|prelekcj|debata|promocja ksiazki|autorsk|senior)/],\n];\n\nexport function guessCategory(text: string, fallback: Category = \"inne\"): Category {\n const f = ` ${fold(text)} `;\n for (const [category, re] of RULES) if (re.test(f)) return category;\n return fallback;\n}\n","import { type Category, TOWNS } from \"../shared/types.ts\";\n\nconst TZ = \"Europe/Warsaw\";\n\n// ---------- dates (always Europe/Warsaw, as plain YYYY-MM-DD / HH:MM strings) ----------\n\nconst pad = (n: number) => String(n).padStart(2, \"0\");\n\nexport function warsawParts(d: Date = new Date()) {\n const parts = new Intl.DateTimeFormat(\"en-CA\", {\n timeZone: TZ,\n year: \"numeric\",\n month: \"2-digit\",\n day: \"2-digit\",\n hour: \"2-digit\",\n minute: \"2-digit\",\n hourCycle: \"h23\",\n }).formatToParts(d);\n const get = (t: string) => parts.find((p) => p.type === t)?.value ?? \"00\";\n return { date: `${get(\"year\")}-${get(\"month\")}-${get(\"day\")}`, time: `${get(\"hour\")}:${get(\"minute\")}` };\n}\n\nexport const warsawToday = () => warsawParts().date;\n\nexport function addDays(date: string, days: number): string {\n const d = new Date(`${date}T12:00:00Z`);\n d.setUTCDate(d.getUTCDate() + days);\n return d.toISOString().slice(0, 10);\n}\n\n// 0 = Sunday … 6 = Saturday\nexport const weekday = (date: string) => new Date(`${date}T12:00:00Z`).getUTCDay();\n\n// ISO timestamp with offset → local date and time in Zamość\nexport function fromIso(iso: string): { date: string; time: string | null } | null {\n const d = new Date(iso);\n if (isNaN(d.getTime())) return null;\n // date-only strings carry no time\n if (/^\\d{4}-\\d{2}-\\d{2}$/.test(iso.trim())) return { date: iso.trim(), time: null };\n return warsawParts(d);\n}\n\nconst MONTHS: Record = {\n stycznia: 1, styczeń: 1, styczen: 1,\n lutego: 2, luty: 2,\n marca: 3, marzec: 3,\n kwietnia: 4, kwiecień: 4, kwiecien: 4,\n maja: 5, maj: 5,\n czerwca: 6, czerwiec: 6,\n lipca: 7, lipiec: 7,\n sierpnia: 8, sierpień: 8, sierpien: 8,\n września: 9, wrzesień: 9, wrzesnia: 9, wrzesien: 9,\n października: 10, październik: 10, pazdziernika: 10,\n listopada: 11, listopad: 11,\n grudnia: 12, grudzień: 12, grudzien: 12,\n};\n\n// \"Sobota, 19 września 2026, 16:00\" or \"5 grudnia 2026 r. o godz. 16.00\"\nexport function parsePolishDate(text: string): { date: string; time: string | null } | null {\n const m = text.toLowerCase().match(/(\\d{1,2})\\s+([a-ząćęłńóśźż]+)\\s+(\\d{4})/);\n if (!m || !MONTHS[m[2]]) return null;\n return { date: `${m[3]}-${pad(MONTHS[m[2]])}-${pad(Number(m[1]))}`, time: findTime(text.slice(m.index! + m[0].length)) };\n}\n\n// \"27.09.2026\" (optionally followed by a time)\nexport function parseDotDate(text: string): { date: string; time: string | null } | null {\n const m = text.match(/(\\d{1,2})\\.(\\d{1,2})\\.(\\d{4})/);\n if (!m) return null;\n return { date: `${m[3]}-${pad(Number(m[2]))}-${pad(Number(m[1]))}`, time: findTime(text.slice(m.index! + m[0].length)) };\n}\n\nexport function findTime(text: string): string | null {\n const m = text.match(/(?:^|[^\\d.])([01]?\\d|2[0-3])[:.]([0-5]\\d)(?!\\d)/);\n return m ? `${pad(Number(m[1]))}:${m[2]}` : null;\n}\n\nexport const isDate = (s: unknown): s is string => typeof s === \"string\" && /^\\d{4}-\\d{2}-\\d{2}$/.test(s);\nexport const isTime = (s: unknown): s is string => typeof s === \"string\" && /^([01]\\d|2[0-3]):[0-5]\\d$/.test(s);\n\n// ---------- text ----------\n\nexport function clean(text: string | null | undefined, max = 600): string | null {\n if (!text) return null;\n const t = text.replace(/\\s+/g, \" \").trim();\n if (!t) return null;\n return t.length > max ? `${t.slice(0, max - 1).trimEnd()}…` : t;\n}\n\nexport function fold(text: string): string {\n return text.toLowerCase().normalize(\"NFD\").replace(/[̀-ͯ]/g, \"\").replace(/ł/g, \"l\");\n}\n\n// Same event from two sites → same key: folded title letters + date\nexport function dedupKey(title: string, date: string): string {\n const words = fold(title)\n .replace(/[„”\"'«»]/g, \"\")\n .replace(/[^a-z0-9]+/g, \" \")\n .split(\" \")\n .filter((w) => w.length > 1 && ![\"spektakl\", \"koncert\", \"komedia\", \"kabaret\", \"w\", \"we\", \"na\", \"i\"].includes(w));\n return `${date}:${words.join(\"\").slice(0, 40)}`;\n}\n\n// ---------- town ----------\n\nexport function guessTown(text: string, fallback = \"Zamość\"): string {\n const f = fold(text);\n for (const town of TOWNS) {\n const stem = fold(town).slice(0, Math.max(6, fold(town).length - 2));\n if (f.includes(stem)) return town;\n }\n return fallback;\n}\n\n// ---------- category ----------\n\nconst RULES: [Category, RegExp][] = [\n [\"kino\", /\\b(seans|film|kino|projekcj)/],\n [\"dzieci\", /\\b(dla dzieci|dzieci|rodzinn|bajk|maluch|przedszkol|mali |malego|psi patrol|animowan)/],\n [\"kabaret\", /\\b(kabaret|stand-?up|stand up|improwizac)/],\n [\"teatr\", /\\b(spektakl|teatr|komedi|sztuk|monodram|opera|operetk|musical|balet)/],\n [\"sport\", /\\b(mecz|turniej|bieg|zawody|liga|hetman|rajd|maraton|siatkow|pilk|trening|rower)/],\n [\"koncert\", /\\b(koncert|festiwal muzy|recital|orkiestr|filharmoni|jazz|rock|disco|muzyk|muzyczn|akustycz|gala|tour|zespol|piosen|chor|dj)/],\n [\"wystawa\", /\\b(wystaw|wernisaz|ekspozycj|galeri|muzeum)/],\n [\"festyn\", /\\b(festyn|piknik|dozynk|swieto|jarmark|festiwal smak|dni miasta|biesiad|odpust|zlot)/],\n [\"warsztaty\", /\\b(warsztat|kurs|szkoleni|lekcj|laboratorium|nauka)/],\n [\"spotkanie\", /\\b(spotkani|wyklad|konferencj|prelekcj|debata|promocja ksiazki|autorsk|senior)/],\n];\n\nconst STOP_WORDS = new Set([\"the\", \"dla\", \"oraz\", \"zamosciu\", \"zamosc\", \"koncert\", \"spektakl\", \"bilety\", \"data\", \"repertuar\", \"tour\"]);\n\nfunction titleWords(title: string) {\n return new Set(fold(title).replace(/[^a-z0-9]+/g, \" \").split(\" \").filter((w) => w.length > 2 && !STOP_WORDS.has(w)));\n}\n\n// \"Michał Wiśniewski Akustycznie II w Zamościu – data, bilety\" ≈ \"Michał Wiśniewski Akustycznie II\"\nexport function similarTitles(a: string, b: string): boolean {\n const A = titleWords(a);\n const B = titleWords(b);\n if (A.size === 0 || B.size === 0) return false;\n let common = 0;\n for (const w of A) if (B.has(w)) common++;\n return common >= Math.min(2, A.size, B.size) && common / Math.min(A.size, B.size) >= 0.6;\n}\n\nexport function guessCategory(text: string, fallback: Category = \"inne\"): Category {\n const f = ` ${fold(text)} `;\n for (const [category, re] of RULES) if (re.test(f)) return category;\n return fallback;\n}\n","createdAt",["D",1789368293334],"branchVersion","branchId","255405a6-055f-4761-b8d5-94d1ffe681e3","id","25f66c95-84fd-4431-a007-b1f4e010323a","co-w-zamosciu",["D",1789336184443],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Co dziś w Zamościu i na Roztoczu — koncerty, kino, 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{ 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",[140],"6f9cf8c5-cc6d-47ba-b106-6d7e24b7f39b","README.md","01a09cbf-66da-7600-85d1-77f7ef9c20ff",["D",1789336184443],"# 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",[150],"42cea312-1aaf-4642-b2da-e3bba05e69b9","CHANGELOG.md","01a09cbf-66da-7600-85d1-72302458f448",["D",1789336184443],"# 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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