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\n {/* Hero */}\n

\n 🫀\n

EKG Rhythm Practice

\n Real-looking rhythm strips, endless drills. Do one strip and you're done, or a\n thousand and keep going.\n

\n\n

\n \n Start practicing →\n \n \n Browse all rhythms\n \n

\n\n {/* Stats strip */}\n

{total}

Rhythms

{categories.length}

\n How it works\n

\n {[\n { icon: \"📈\", title: \"Read a live strip\", body: \"Every strip is generated fresh — real-time-style waveforms, not static images.\" },\n { icon: \"🎯\", title: \"Pick the rhythm\", body: \"Choose from 4 options, weighted toward the confusable ones nursing exams love.\" },\n { icon: \"🔁\", title: \"Keep going\", body: \"Instant feedback, a running streak, and an endless supply of new rounds.\" },\n ].map((step) => (\n

{step.icon}

{step.title}

{step.body}

\n ))}\n

\n\n {/* Category preview */}\n

\n What's covered\n

\n {categories.map((c) => (\n \n {c}\n \n ))}\n

\n\n {/* Pro teaser */}\n \n

Unlock the full library

\n Go Pro for every rhythm — blocks, VT, torsades, WPW, and more.\n

\n \n Go Pro\n \n \n

\n );\n}\n","/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport type { RhythmSummary } from \"./RhythmCard.tsx\";\nimport { FREE_DAILY_LIMIT } from \"../lib/dailyLimit.ts\";\n\ninterface HomeProps {\n rhythms: RhythmSummary[] | null;\n pro: boolean;\n remaining: number;\n onStartPractice: () => void;\n onBrowse: () => void;\n onGoPro: () => void;\n}\n\nexport function Home({ rhythms, pro, remaining, onStartPractice, onBrowse, onGoPro }: HomeProps) {\n const total = rhythms?.length ?? 28;\n const categories = rhythms\n ? Array.from(new Set(rhythms.map((r) => r.category)))\n : [\"Sinus\", \"Atrial\", \"Junctional\", \"AV Block\", \"Ventricular\", \"Other\"];\n const remainingLabel = pro ? \"∞\" : String(Math.max(remaining, 0));\n\n return (\n

\n {/* Hero */}\n

\n 🫀\n

EKG Rhythm Practice

\n Real-looking rhythm strips, endless drills. Do one strip and you're done, or a\n thousand and keep going.\n

\n\n

\n \n Start practicing →\n \n \n Browse all rhythms\n \n

\n\n {/* Stats strip */}\n

{total}

Rhythms

{categories.length}

\n How it works\n

{step.icon}

{step.title}

{step.body}

\n ))}\n

\n\n {/* Category preview */}\n

\n What's covered\n

\n {categories.map((c) => (\n \n {c}\n \n ))}\n

\n Every rhythm is unlocked — the full library is free to browse and practice.\n

\n\n {/* Pro teaser */}\n {!pro && (\n \n

Go unlimited

\n Free practice is capped at {FREE_DAILY_LIMIT} rhythms a day. Go Pro to practice\n without limits.\n

\n \n Go Pro\n \n \n )}\n

\n );\n}\n","createdAt",["D",1788374145315],"branchVersion","branchId","7029bff5-bb8a-442e-a4f2-805f0156bd56","id","4a26e4ff-5701-4f0e-a2d1-9b438dea196d","ekg-rhythm-practice",["D",1788371332863],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","EKG rhythm interpretation practice app for nursing/EMS students","imageUrl","f88a0ee3-b2a2-4b50-b1cd-d6ef9333f8b4","pinnedFileId","01a0633c-efa7-770e-92de-fcbd716f9193","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","01a0633a-cac3-709b-a980-c6cbc53d1693","tursoName","4a26e4ff57014f0ea2d19b438dea196d","tursoHostname","4a26e4ff57014f0ea2d19b438dea196d-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789500689328],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_101":100,"_109":105},"org",{"_101":100,"_102":103,"_104":105,"_18":56,"_106":107,"_108":25},"branch",{"_13":90,"_32":91,"_44":43,"_92":45,"_93":-5,"_94":-5,"_95":-5,"_96":-5,"_97":-5,"_98":46,"_99":100},"isOwned",55,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","dusty_medic","handle","displayName","Peter Sulzinski","avatar","https://lh3.googleusercontent.com/a/ACg8ocKxS7SIQL-2xeZae3OPJraIhveBUDOK84i99c574FL5C5flzw=s96-c","tier","free","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_44":45,"_32":46,"_39":339,"_48":-5,"_49":25,"_50":51,"_52":51,"_53":54,"_55":-5,"_18":56,"_57":58,"_59":60,"_61":-5,"_62":-5,"_63":64,"_65":66,"_67":68,"_69":70,"_71":340,"_73":-5,"_74":75,"_76":75,"_77":78,"_79":78,"_80":78,"_81":75,"_82":75,"_83":341,"_85":342,"_87":343,"_89":25},"tree",[182,184,200,201,202],"files",[182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202],"counts",{"_172":64,"_173":151,"_174":64,"_175":176,"_177":178},"contents",[132,133,134,135,136],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_44":167,"_32":168,"_30":169,"_139":-5,"_42":43,"_41":143,"_141":60,"_39":170,"_13":64,"_34":165,"_36":-5,"_24":25,"_146":-5,"_27":171},{"_44":161,"_32":162,"_30":163,"_139":-5,"_42":43,"_41":151,"_141":60,"_39":164,"_13":64,"_34":165,"_36":-5,"_24":25,"_146":-5,"_27":166},{"_44":155,"_32":156,"_30":157,"_139":-5,"_42":43,"_41":151,"_141":60,"_39":158,"_13":64,"_34":20,"_36":159,"_24":25,"_146":-5,"_27":160},{"_44":148,"_32":149,"_30":150,"_139":-5,"_42":43,"_41":151,"_141":60,"_39":152,"_13":64,"_34":20,"_36":153,"_24":25,"_146":-5,"_27":154},{"_44":137,"_32":138,"_30":58,"_139":-5,"_42":43,"_41":140,"_141":25,"_39":142,"_13":143,"_34":144,"_36":145,"_24":25,"_146":-5,"_27":147},"fe5ab74a-3263-4d91-b9cb-3cc2685c85b0","index.ts","parentId",27,"latest",["D",1788374097239],2,"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 { RHYTHMS } from \"./backend/rhythms-data.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// List all rhythms (summary only — no questions in the payload).\n// Every rhythm is unlocked content-wise; the free/Pro split is now a daily\n// practice cap enforced client-side, not a content paywall.\napp.get(\"/api/rhythms\", (c) => {\n const list = [...RHYTHMS]\n .sort((a, b) => a.sortOrder - b.sortOrder)\n .map(({ questions, ...summary }) => ({\n ...summary,\n locked: false,\n questionCount: questions.length,\n }));\n return c.json(list);\n});\n\n// Single rhythm detail — full content, including quiz questions, for everyone.\napp.get(\"/api/rhythms/:id\", (c) => {\n const rhythm = RHYTHMS.find((r) => r.id === c.req.param(\"id\"));\n if (!rhythm) return c.json({ error: \"not found\" }, 404);\n return c.json({\n ...rhythm,\n locked: false,\n });\n});\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",[138],"f174df99-6739-437c-b218-528fe54153d7","README.md","01a0633c-efa7-770e-92de-f8c87a88692d",1,["D",1788371332863],"# 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",[149],"4d03780d-716e-4f3b-9cdf-f3d72852a379","CHANGELOG.md","01a0633c-efa7-770e-92de-f742abd282c5",["D",1788371332863],"# 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 · v30