`, 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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\n \n {star.owner}/\n \n {star.name}\n \n {star.archived && archived}\n {star.isFork && fork}\n

\n\n {star.description && (\n

{star.description}

\n )}\n\n {star.topics.length > 0 && (\n

\n {star.topics.slice(0, 6).map((topic) => (\n \n {topic}\n \n ))}\n

\n )}\n\n

\n {star.language && (\n \n \n {star.language}\n \n )}\n \n \n {compact(star.stars)}\n \n {compact(star.forks)} forks\n starred {relative(star.starredAt)}\n

\n \n );\n}","createdAt",["D",1789598579757],"branchVersion","branchId","62461c6f-d5a5-42e2-991d-eb12f267fb29","id","75594e46-fd3f-4fb5-b76f-ebeb3f30cc18","github-stars",["D",1789598460492],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","A page showing the repos I've starred on GitHub","imageUrl","f3673646-3242-47b1-aeab-dea436ba0977","pinnedFileId","01a0ac61-6a82-70dc-b85b-426db4f32fd5","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","01a0ac59-453d-700c-b458-c20df4d4e87d","tursoName","75594e46fd3f4fb5b76febeb3f30cc18","tursoHostname","75594e46fd3f4fb5b76febeb3f30cc18-val-town.aws-us-east-2.turso.io","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_104":103,"_112":108},"org",{"_104":103,"_105":106,"_107":108,"_19":60,"_109":110,"_111":30},"branch",{"_13":93,"_37":94,"_48":47,"_95":49,"_96":-5,"_97":-5,"_98":-5,"_99":-5,"_100":-5,"_101":50,"_102":103},"isOwned",33,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","rodrigoalcaraz","handle","displayName","Rodrigo Alcaraz","avatar","https://lh3.googleusercontent.com/a/ACg8ocJkAyg-zXk2EMWk74tpj4qNlT0UcN03qroZ1zeS2w4W6ZgCFwA=s96-c","tier","free","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_48":49,"_37":50,"_43":293,"_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":-5,"_76":-5,"_77":78,"_79":78,"_80":81,"_82":81,"_83":81,"_84":78,"_85":78,"_86":294,"_88":295,"_90":296,"_92":30},"tree",[186,198,199,200,201],"files",[186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201],"counts",{"_176":68,"_177":146,"_178":68,"_179":180,"_181":182},"contents",[135,136,137,138,139],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_48":170,"_37":171,"_35":172,"_142":-5,"_46":47,"_45":146,"_144":64,"_43":173,"_13":68,"_39":174,"_41":-5,"_29":30,"_149":-5,"_32":175},{"_48":164,"_37":165,"_35":166,"_142":-5,"_46":47,"_45":146,"_144":64,"_43":167,"_13":68,"_39":26,"_41":168,"_29":30,"_149":-5,"_32":169},{"_48":158,"_37":159,"_35":160,"_142":-5,"_46":47,"_45":146,"_144":30,"_43":161,"_13":68,"_39":26,"_41":162,"_29":30,"_149":-5,"_32":163},{"_48":151,"_37":152,"_35":153,"_142":-5,"_46":47,"_45":154,"_144":30,"_43":155,"_13":68,"_39":40,"_41":156,"_29":30,"_149":-5,"_32":157},{"_48":140,"_37":141,"_35":62,"_142":-5,"_46":47,"_45":143,"_144":64,"_43":145,"_13":146,"_39":147,"_41":148,"_29":30,"_149":50,"_32":150},"3dedf68e-dbf1-4fb9-8664-78009944caba","index.ts","parentId",6,"latest",["D",1789598579699],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 {\n configuredUser,\n DEFAULT_USER,\n fetchStars,\n GitHubError,\n hasToken,\n readCache,\n TOKEN_VAR,\n USER_VAR,\n writeCache,\n} from \"./github.ts\";\n\nconst app = new Hono();\n\n/** GitHub usernames: 1–39 chars, alphanumeric or hyphen, no leading hyphen. */\nconst USERNAME = /^[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,38})$/;\n\n/**\n * What the page needs in order to explain a rate-limited val: whether a token\n * exists, where to put one, and whose stars we're reading by default.\n *\n * Nothing secret crosses the wire — only whether the gap exists. The env var\n * editor URL is derived from the val itself, so a fork sends people to its own\n * settings rather than to ours.\n */\nfunction setupState() {\n return {\n token: hasToken(),\n tokenVar: TOKEN_VAR,\n userVar: USER_VAR,\n defaultUser: DEFAULT_USER,\n envUrl: `${parseVal().links.self.val}/environment-variables?key=${TOKEN_VAR}`,\n newTokenUrl:\n \"https://github.com/settings/tokens/new?description=val-town%20github-stars\",\n };\n}\n\n// ── Shell ───────────────────────────────────────────────────────\n// Never cached, so it can stamp the current version into each asset URL.\napp.get(\"/\", (c) => c.html(Root()));\n\n// The version-addressed asset URLs Root() stamps, cached immutably.\napp.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path));\n\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\n\n// ── API ─────────────────────────────────────────────────────────\n\napp.get(\"/api/stars\", async (c) => {\n const user = (c.req.query(\"user\") || configuredUser()).trim();\n if (!USERNAME.test(user)) {\n return c.json({ error: `\"${user}\" is not a GitHub username` }, 400);\n }\n\n // Cached for a few minutes, so most page views never touch GitHub at all —\n // unauthenticated access is only 60 requests/hour, and that budget is per IP\n // on a shared platform. `?refresh=1` bypasses it.\n if (c.req.query(\"refresh\") !== \"1\") {\n const cached = await readCache(user);\n if (cached) return c.json({ ...cached, cached: true, setup: setupState() });\n }\n\n try {\n const snapshot = await fetchStars(user);\n await writeCache(user, snapshot);\n return c.json({ ...snapshot, cached: false, setup: setupState() });\n } catch (err) {\n if (err instanceof GitHubError) {\n const body = {\n error: err.message,\n reason: err.rateLimited\n ? \"rate-limit\" as const\n : err.status === 404\n ? \"no-user\" as const\n : \"github\" as const,\n rateLimit: err.rateLimit,\n setup: setupState(),\n };\n // 500, never 502: the CDN replaces an origin 502 with its own HTML error\n // page, so this JSON body would never reach the client and the browser\n // would choke on `Unexpected token '<'`.\n if (err.status === 404) return c.json(body, 404);\n if (err.rateLimited) return c.json(body, 429);\n return c.json(body, 500);\n }\n console.error(\"github-stars error:\", err);\n return c.json({\n error: err instanceof Error ? err.message : String(err),\n reason: \"upstream\" as const,\n setup: setupState(),\n }, 500);\n }\n});\n\n// Unwrap and rethrow Hono errors as the original error.\napp.onError((err) => Promise.reject(err));\n\nexport default app.fetch;","label",[141],"5d6e5529-66f3-4c81-9129-0d0a9ff26834","github.ts","e189343c-b21f-11f1-9378-1607ee4eb77e",2,["D",1789598542267],"/**\n * A minimal GitHub REST client — just enough to read one user's profile and\n * the repos they've starred.\n *\n * Two things shape this file:\n *\n * 1. **Rate limits.** Unauthenticated GitHub allows 60 requests/hour *per IP*,\n * and Val Town shares IPs, so that budget can already be spent by someone\n * else. A token (any token, no scopes needed for public data) raises it to\n * 5,000/hour. We surface the remaining count so the page can say which\n * regime it's in rather than just failing.\n * 2. **Caching.** Most page views should never touch GitHub at all, so a\n * snapshot is cached in blob storage for a few minutes. See readCache().\n */\nimport { blob } from \"https://esm.town/v/std/blob/main.ts\";\n\nconst API = \"https://api.github.com\";\nconst USER_AGENT = \"val-town-github-stars\";\n\n/** Optional. Without it we're on the 60/hour unauthenticated budget. */\nexport const TOKEN_VAR = \"GITHUB_TOKEN\";\n/** Optional. Whose stars to show; defaults to the val owner's handle. */\nexport const USER_VAR = \"GITHUB_USER\";\nexport const DEFAULT_USER = \"rodrigoalcaraz\";\n\n/** GitHub's maximum page size, and how many pages we're willing to walk. */\nconst PER_PAGE = 100;\nconst MAX_PAGES = 10;\n\n/** How long a cached snapshot stays fresh. */\nconst CACHE_TTL_MS = 5 * 60 * 1000;\n\n// ── Wire types (GitHub's shape) ─────────────────────────────────\n\ninterface GitHubUser {\n login: string;\n name: string | null;\n avatar_url: string;\n html_url: string;\n bio: string | null;\n location: string | null;\n blog: string | null;\n public_repos: number;\n followers: number;\n following: number;\n}\n\ninterface GitHubRepo {\n id: number;\n name: string;\n html_url: string;\n description: string | null;\n language: string | null;\n topics?: string[];\n stargazers_count: number;\n forks_count: number;\n archived: boolean;\n fork: boolean;\n homepage: string | null;\n pushed_at: string;\n owner: { login: string; avatar_url: string };\n}\n\n/**\n * With the `star+json` media type each item is wrapped as\n * `{ starred_at, repo }`. We ask for that header, but we also accept a bare\n * repo object so the code keeps working if GitHub ever ignores it.\n */\ntype StarredItem = { starred_at?: string; repo?: GitHubRepo } & Partial;\n\n// ── Wire types (ours) ───────────────────────────────────────────\n\n/** One starred repo, flattened to only what the page renders. */\nexport interface Star {\n id: number;\n name: string;\n owner: string;\n ownerAvatar: string;\n url: string;\n description: string | null;\n language: string | null;\n topics: string[];\n stars: number;\n forks: number;\n archived: boolean;\n isFork: boolean;\n homepage: string | null;\n pushedAt: string;\n starredAt: string;\n}\n\nexport interface Profile {\n login: string;\n name: string | null;\n avatarUrl: string;\n htmlUrl: string;\n bio: string | null;\n location: string | null;\n blog: string | null;\n publicRepos: number;\n followers: number;\n following: number;\n}\n\nexport interface RateLimit {\n limit: number;\n remaining: number;\n resetAt: string | null;\n}\n\nexport interface StarSnapshot {\n user: string;\n profile: Profile;\n stars: Star[];\n languages: { name: string; count: number }[];\n fetchedAt: string;\n rateLimit: RateLimit | null;\n /** True when the user has more stars than MAX_PAGES × PER_PAGE. */\n truncated: boolean;\n authenticated: boolean;\n}\n\nexport class GitHubError extends Error {\n status: number;\n rateLimited: boolean;\n rateLimit: RateLimit | null;\n\n constructor(\n message: string,\n status: number,\n rateLimited: boolean,\n rateLimit: RateLimit | null,\n ) {\n super(message);\n this.name = \"GitHubError\";\n this.status = status;\n this.rateLimited = rateLimited;\n this.rateLimit = rateLimit;\n }\n}\n\n// ── Config ──────────────────────────────────────────────────────\n\nexport function tokenValue(): string {\n return Deno.env.get(TOKEN_VAR)?.trim() ?? \"\";\n}\n\nexport function hasToken(): boolean {\n return tokenValue().length > 0;\n}\n\nexport function configuredUser(): string {\n return Deno.env.get(USER_VAR)?.trim() || DEFAULT_USER;\n}\n\nfunction requestHeaders(): Record {\n const headers: Record = {\n Accept: \"application/vnd.github.star+json\",\n \"User-Agent\": USER_AGENT,\n \"X-GitHub-Api-Version\": \"2022-11-28\",\n };\n const token = tokenValue();\n if (token) headers.Authorization = `Bearer ${token}`;\n return headers;\n}\n\nfunction readRateLimit(res: Response): RateLimit | null {\n const int = (name: string): number | null => {\n const raw = res.headers.get(name);\n if (raw === null) return null;\n const value = Number(raw);\n return Number.isFinite(value) ? value : null;\n };\n const limit = int(\"x-ratelimit-limit\");\n const remaining = int(\"x-ratelimit-remaining\");\n if (limit === null && remaining === null) return null;\n const reset = int(\"x-ratelimit-reset\");\n return {\n limit: limit ?? 0,\n remaining: remaining ?? 0,\n resetAt: reset === null ? null : new Date(reset * 1000).toISOString(),\n };\n}\n\n// ── Requests ────────────────────────────────────────────────────\n\nasync function getJson(path: string): Promise<{ data: T; rateLimit: RateLimit | null }> {\n const res = await fetch(`${API}${path}`, { headers: requestHeaders() });\n const rateLimit = readRateLimit(res);\n\n if (!res.ok) {\n // GitHub answers an exhausted budget with 403 (or 429 for secondary\n // limits), so status alone doesn't tell us — check the remaining count too.\n const rateLimited = res.status === 403 || res.status === 429;\n let detail = \"\";\n try {\n const body = await res.json();\n if (typeof body?.message === \"string\") detail = body.message;\n } catch {\n // Not JSON — fall through to the generic message.\n }\n throw new GitHubError(\n detail || `GitHub responded ${res.status}`,\n res.status,\n rateLimited,\n rateLimit,\n );\n }\n\n return { data: await res.json() as T, rateLimit };\n}\n\nfunction toStar(item: StarredItem): Star | null {\n const repo = item.repo ?? item;\n if (!repo?.id || !repo.name || !repo.owner) return null;\n return {\n id: repo.id,\n name: repo.name,\n owner: repo.owner.login,\n ownerAvatar: repo.owner.avatar_url,\n url: repo.html_url,\n description: repo.description,\n language: repo.language,\n topics: repo.topics ?? [],\n stars: repo.stargazers_count,\n forks: repo.forks_count,\n archived: repo.archived,\n isFork: repo.fork,\n homepage: repo.homepage,\n pushedAt: repo.pushed_at,\n // Without the star+json media type GitHub omits starred_at; pushed_at is\n // the closest thing we have, and it keeps the sort stable.\n starredAt: item.starred_at ?? repo.pushed_at,\n };\n}\n\nfunction tallyLanguages(stars: Star[]): { name: string; count: number }[] {\n const counts = new Map();\n for (const star of stars) {\n if (!star.language) continue;\n counts.set(star.language, (counts.get(star.language) ?? 0) + 1);\n }\n return [...counts.entries()]\n .map(([name, count]) => ({ name, count }))\n .sort((a, b) => b.count - a.count || a.name.localeCompare(b.name));\n}\n\n/**\n * Read a user's profile and every repo they've starred.\n *\n * Throws GitHubError for anything GitHub says no to, so the caller can tell a\n * missing user (404) from an exhausted rate limit (403) from a real failure.\n */\nexport async function fetchStars(user: string): Promise {\n const slug = encodeURIComponent(user);\n const profileRes = await getJson(`/users/${slug}`);\n const profile = profileRes.data;\n\n const stars: Star[] = [];\n let rateLimit = profileRes.rateLimit;\n let truncated = false;\n\n for (let page = 1; page <= MAX_PAGES; page++) {\n const { data, rateLimit: pageLimit } = await getJson(\n `/users/${slug}/starred?per_page=${PER_PAGE}&page=${page}&sort=created&direction=desc`,\n );\n rateLimit = pageLimit;\n for (const item of data) {\n const star = toStar(item);\n if (star) stars.push(star);\n }\n if (data.length < PER_PAGE) break;\n if (page === MAX_PAGES) truncated = true;\n }\n\n return {\n user: profile.login,\n profile: {\n login: profile.login,\n name: profile.name,\n avatarUrl: profile.avatar_url,\n htmlUrl: profile.html_url,\n bio: profile.bio,\n location: profile.location,\n blog: profile.blog,\n publicRepos: profile.public_repos,\n followers: profile.followers,\n following: profile.following,\n },\n stars,\n languages: tallyLanguages(stars),\n fetchedAt: new Date().toISOString(),\n rateLimit,\n truncated,\n authenticated: hasToken(),\n };\n}\n\n// ── Cache ───────────────────────────────────────────────────────\n// A cache miss costs one GitHub request; a hit costs none. Failures here are\n// swallowed on purpose — the cache is an optimization, never a reason to fail\n// a page load.\n\nconst cacheKey = (user: string) => `stars:${user.toLowerCase()}`;\n\nexport async function readCache(user: string): Promise {\n try {\n const hit = await blob.getJSON(cacheKey(user)) as StarSnapshot | undefined;\n if (!hit?.fetchedAt) return null;\n if (Date.now() - Date.parse(hit.fetchedAt) > CACHE_TTL_MS) return null;\n return hit;\n } catch {\n return null;\n }\n}\n\nexport async function writeCache(user: string, snapshot: StarSnapshot): Promise {\n try {\n await blob.setJSON(cacheKey(user), snapshot);\n } catch (err) {\n console.error(\"star cache write failed:\", err);\n }\n}",[152],"c75cc8fa-6d59-4705-a298-cce5c9105284","README.md","01a0ac61-6a82-70dc-b85b-3f0f5a830f77",["D",1789598460492],"# 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],"83ee693a-3593-4c89-ab74-8f0f7a13f722","CHANGELOG.md","01a0ac61-6a82-70dc-b85b-3845daa4751d",["D",1789598460492],"# 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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