/, else the whole document. */\nfunction mainContent(html: string): string {\n for (const t of [\"article\", \"main\"]) {\n const blocks = [...html.matchAll(new RegExp(`<${t}\\\\b[^>]*>([\\\\s\\\\S]*?)`, \"gi\"))]\n .map((m) => m[1])\n .sort((a, b) => b.length - a.length);\n if (blocks[0] && blocks[0].length > 500) return blocks[0];\n }\n return html.match(/]*>([\\s\\S]*?)<\\/body>/i)?.[1] ?? html;\n}\n\nexport async function fetchArticleText(url: string, maxChars: number): Promise {\n try {\n const res = await fetch(url, {\n headers: { \"user-agent\": USER_AGENT, accept: \"text/html,application/xhtml+xml\" },\n redirect: \"follow\",\n signal: AbortSignal.timeout(FETCH_TIMEOUT_MS),\n });\n if (!res.ok) return null;\n\n const type = res.headers.get(\"content-type\") ?? \"\";\n if (!/text\\/html|application\\/xhtml/i.test(type)) {\n await res.body?.cancel();\n return null;\n }\n const length = Number(res.headers.get(\"content-length\"));\n if (Number.isFinite(length) && length > MAX_BYTES) {\n await res.body?.cancel();\n return null;\n }\n\n const html = (await res.text()).slice(0, MAX_BYTES);\n const text = htmlToText(mainContent(html.replace(BOILERPLATE, \" \")));\n\n // Too short to be a real article — cookie wall, JS-only page, paywall stub\n if (text.length < 400) return null;\n return text.slice(0, maxChars);\n } catch {\n return null;\n }\n}\n",[203],"a19bc0d1-1276-477f-9516-608fedfb48c8","README.md","6dfc4c34-a257-11f1-9a7b-1607ee4eb77e",41,["D",1787864539021],4,"# hn-digest\n\nA daily email of the **top 5** Hacker News front-page stories, each with a summary of the\nlinked page and a summary of what the top comments are arguing about.\n\nSource is the official [HN Firebase API](https://github.com/HackerNews/API) — keyless and\nunauthenticated. Two cron jobs:\n\n| File | Schedule | Job |\n| --- | --- | --- |\n| `collect.ts` | hourly, `:07` | Record what's on the front page |\n| `main.ts` | `07:00 UTC` | Pick the top 5 and email them |\n\n## Why two jobs\n\n`topstories.json` is a live snapshot, so a single daily poll would miss anything that\npeaked overnight and fell off. The collector records every front-page story hourly into\n`hn-digest:pool`, keeping high-water marks for score and comment count. The digest then\npicks the highest **peak** score of the past 36 hours — a genuine top-of-day, not\nwhatever happened to be up at 07:00.\n\n## How the digest run works\n\n1. `pick()` takes the 5 highest-peak-score pool entries not already emailed.\n2. Each story is refetched for its live score and its `kids` list. **`kids` is in HN's own\n rank order** — comments carry no score in the API, so this is the only signal for \"top\n comment\". Algolia's `children` is chronological and `hnrss.org/item?id=` is\n reverse-chronological, so neither can rank.\n3. `article.ts` fetches the linked page and extracts text. Failures (paywalls, JS-only\n pages, video, PDFs) leave the summary leaning on the comments, and it says so. Ask/Show\n HN self-posts use the post body instead.\n4. `summarize.ts` makes one Claude call per story with the article text and 15 top-level\n comments. No comments means no discussion section rather than an invented one.\n5. `render.ts` builds the HTML + plain-text email, sent via `std/email`.\n6. The seen-set is written **after** the send succeeds, and only for stories that made it\n into the email. Anything that failed is retried on the next run. A blob read failure\n aborts the run rather than re-sending everything.\n\n## Env vars\n\n| Key | Required | Purpose |\n| --- | --- | --- |\n| `ANTHROPIC_API_KEY` | yes | Claude API |\n| `DIGEST_TO` | no | Recipient. Defaults to the val owner's address. |\n| `DIGEST_DRY_RUN` | no | `1` logs the email instead of sending it. |\n\n## Cost\n\nFive Claude calls a day on `claude-sonnet-5` — roughly **$2/month**.\n\n`claude-haiku-4-5` was measured against Sonnet on identical input for the same five\nstories and lost on specifics: it missed the Microduck's motor count, loop rate and\nlicence, missed three of the six argument threads on the Cloudflare post, and got the\nReachy Mini licence wrong. Haiku costs about $1/month less. Not worth it here, but the\n`model` argument to `summarize()` makes the comparison easy to re-run.\n\nThe collector makes ~31 HN API calls an hour; the digest makes ~5 × 31. All free.\n\n## Tuning\n\nKnobs at the top of `main.ts`: `DIGEST_SIZE`, `MIN_SCORE`, `MAX_AGE_HOURS`,\n`COMMENTS_PER_STORY`, `ARTICLE_MAX_CHARS`. `WATCH_TOP` and `POOL_TTL_DAYS` are in\n`collect.ts`. Prompt and tone live in `SYSTEM` in `summarize.ts`.\n",[211],"pulls","branches","forks","envVars",{"_225":162,"_227":61},"connections",{"_225":61,"_226":61},"count","unfilledCount","emptyCount",{"_42":210,"_32":211,"_30":212,"_142":-5,"_40":41,"_39":213,"_144":48,"_37":266,"_13":215,"_33":20,"_35":216,"_24":48,"_147":-5,"_239":267,"_27":268},{"_42":202,"_32":203,"_30":204,"_142":-5,"_40":41,"_39":205,"_144":25,"_37":263,"_13":207,"_33":34,"_35":208,"_24":48,"_147":-5,"_239":264,"_27":265},{"_42":195,"_32":196,"_30":197,"_142":-5,"_40":41,"_39":198,"_144":25,"_37":260,"_13":61,"_33":178,"_35":200,"_24":48,"_147":-5,"_239":261,"_27":262},{"_42":188,"_32":189,"_30":190,"_142":-5,"_40":41,"_39":191,"_144":25,"_37":257,"_13":162,"_33":34,"_35":193,"_24":48,"_147":-5,"_239":258,"_27":259},{"_42":181,"_32":182,"_30":183,"_142":-5,"_40":41,"_39":184,"_144":25,"_37":254,"_13":61,"_33":34,"_35":186,"_24":48,"_147":-5,"_239":255,"_27":256},{"_42":172,"_32":173,"_30":174,"_142":-5,"_40":41,"_39":175,"_144":48,"_37":251,"_13":177,"_33":178,"_35":179,"_24":48,"_147":-5,"_239":252,"_27":253},{"_42":165,"_32":166,"_30":167,"_142":-5,"_40":41,"_39":168,"_144":48,"_37":248,"_13":162,"_33":34,"_35":170,"_24":48,"_147":-5,"_239":249,"_27":250},{"_42":157,"_32":158,"_30":159,"_142":-5,"_40":41,"_39":160,"_144":25,"_37":245,"_13":162,"_33":34,"_35":163,"_24":48,"_147":-5,"_239":246,"_27":247},{"_42":149,"_32":150,"_30":151,"_142":-5,"_40":41,"_39":152,"_144":48,"_37":242,"_13":154,"_33":34,"_35":155,"_24":48,"_147":-5,"_239":243,"_27":244},{"_42":139,"_32":140,"_30":141,"_142":-5,"_40":41,"_39":143,"_144":25,"_37":238,"_13":61,"_33":34,"_35":146,"_24":48,"_147":-5,"_239":240,"_27":241},["D",1787863854757],"children",[],[140],["D",1787864763848],[],[150],["D",1787863898404],[],[158],["D",1787863967414],[],[166],["D",1787864864926],[],[173],["D",1787863849452],[],[182],["D",1787864744015],[],[189],["D",1787863922615],[],[196],["D",1787863924903],[],[203],["D",1787864539021],[],[211],["D",1787862662938],["D",1789545036283],{"_98":97,"_106":102},{"_98":97,"_99":100,"_101":102,"_18":55,"_103":104,"_105":48},{"_13":87,"_32":88,"_42":41,"_89":43,"_90":-5,"_91":-5,"_92":-5,"_93":-5,"_94":-5,"_95":44,"_96":97},"ctx",{"_80":-5,"_126":307,"_308":309,"_310":311,"_312":48,"_313":48,"_314":48,"_315":25,"_316":-5,"_317":-7,"_318":-7,"_319":61,"_320":48,"_321":48,"_322":-5,"_323":48,"_324":48,"_325":48,"_326":-5},"ENV",{"_278":279,"_280":281,"_282":88,"_283":284,"_285":286,"_287":288,"_289":290,"_291":292,"_293":294,"_295":296,"_297":298,"_299":300,"_301":302,"_303":304,"_305":306},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

`,\n `${esc(s.title)}

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