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Co-founder, chairman and chief investment officer of Ritholtz Wealth Management. Hosts the Masters in Business podcast for Bloomberg and wrote How NOT to Invest.

• 10 Sunday Reads

  The weekend is here! Pour yourself a mug of Danish Blend coffee, grab a seat outside, and get ready for our longer-form weekend reads: • How Three Brothers Built an AI Slop Empire by Buying Legitimate News Sites and Tur…

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Author and clean-energy analyst who writes on solar cost curves.

• This is eye opening data. And again I'll note that Vercel (like OpenRouter) is a very small fraction of all AI spend, and tilts towards certain customers and use cases. The trends on each might be canaries in the coal mine, but we can't yet generalize to industry-wide AI spend.
  Quoting@GavinSBakerOpen models continue taking share. Not just tokens, more $ now spent on open models than OpenAI. Positive for the AI infra trade. Open models taking share shift $ margin from the model layer to the infra and app layers.

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Co-founder, chairman and chief investment officer of Ritholtz Wealth Management. Hosts the Masters in Business podcast for Bloomberg and wrote How NOT to Invest.

• 10 Weekend Reads

  The weekend is here! Pour yourself a mug of Danish Blend coffee, grab a seat outside, and get ready for our longer-form weekend reads: ​• Red and Blue America Have Found Something to Agree on: Flock Cameras Must Go: Lib…

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CEO of Vercel; creator of Next.js and Socket.IO. Writes at rauchg.com.

• Looks like today may be a record day for token volume % of open models on Vercel AI Gateway: 🟦 Open 78.4% 🟨 Closed 21.6% While spend 💲 usually tells a different story, #3 and #4 today are Moonshot AI & DeepSeek. Adding Z⁠.ai, their combined spend surpasses OpenAI (#2). (Do note that's the spend for inference of the model across providers (mostly in the US), not revenue going directly to the open weight labs.)

  OpenAIRelated

• Free Jev on Vercel I know what I’m doing this weekend 😁
  Quoting@vercel_devJev by @typesafeai is free on Vercel AI Gateway until Sept 25. Build with the fastest adopted model on the Gateway at no cost.

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Writer and developer. He runs the Latent Space newsletter and podcast about AI engineering, and writes essays on software and careers at swyx.io.

• swyxdotio — This is the repo for swyx's blog - Blog content is created in github issues, then posted on swyx.io as blog pages! Comment/watch to follow along my blog within GitHub

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CEO of Vercel; creator of Next.js and Socket.IO. Writes at rauchg.com.

• Vercel is the Vercel for Java
  Quoting@sterenYou wouldn't deploy Java to Vercel...

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CEO of Vercel; creator of Next.js and Socket.IO. Writes at rauchg.com.

• It's likely that more software will be produced next year than in all of the history of computing. It took Vercel 10 years to get to 1 billion deployments, but then we added another 1.4 billion in the last 10 months alone. Some of this will be tiny, personal and even disposable software. An HTML file with some javascript ("artifacts"), a report, a pricing calculator, a slide deck, all the way to sophisticated apps, agents and platforms. Deployment speed is one of our obsessions. We've brought down the time to deploy, upload, assign a domain and globally propagate an artifact to 1 second. This…
  Quoting@vercel_devYou and your coding agent can now use the CLI to deploy static artifacts in less than one second. ▲ ~/ vercel deploy ./my-static-site --prod

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Working on @ampcode. Writing registerspill.thorstenball.com. Once authored interpreterbook.com and compilerbook.com.

• Time to leave one `amp --no-tui` running on your Mac mini and forget about it. It now serves every repo on the machine, and keeps itself updated.

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Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.

• Pretty incredible how the skills repo by @mattpocockuk is only 6 months old, and has more stars than the React one. We had to sit down and talk. Timestamps: 00:00 Intro 05:48 How Matt got into tech 10:14 How Matt got into open source 12:58 Joining Vercel 18:39 Total TypeScript 23:21 AI’s impact on technical education 30:32 Building reusable skills for AI coding agents 40:46 The “smart zone” vs the “dumb zone” 45:02 The wayfinder skill 47:52 Why agents excel at software engineering 50:54 “Leading words” 1:01:10 Learning the fundamentals 1:09:17 Local vs. cloud agents 1:12:36 Planning vs. cours…

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Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.

• The archetypal rich American isn’t a founder-CEO with a stock ticker—he’s the guy with seventeen McDonald’s franchises and a seat on the hospital board. Zidar and Zwick counted him, traced how the tax code inflated him, and revealed a American gentry élite class collectively ten times richer than the Forbes 400: **America’s Gentry Élite: TUESDAY TRENDS & TURMOIL** Politics, Culture, & c.; Patrick Wyman saw America’s élite gentry in his Yakima hometown decades ago; now economists Zidar and... 1/

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CEO of Vercel; creator of Next.js and Socket.IO. Writes at rauchg.com.

• We're seeing extraordinary results from @typesafeai. Default mode in 𝚏𝚡 is auto, with a safety reviewer analyzing every command. That reviewer runs on GPT Luna today. Jev is up to 18x faster (p95) *and* more accurate. It's coming to @vercel AI Gateway and likely new default.
  Quoting@fazxesWe benchmarked fx auto mode (safety) classifier with @typesafeai's Jev. tl;dr: ~5-18x faster and more accurate than 𝚐𝚙𝚝-𝟻.𝟼-𝚕𝚞𝚗𝚊, our current top choice

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Creator of Flask and Jinja. Writes about software at lucumr.pocoo.org.

• insta-website — Website repo for insta

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Venture capitalist and founder of Theory Ventures, previously a partner at Redpoint. Writes a near-daily blog on startups, SaaS metrics, data and AI.

• x.comVercel took its inbound sales development team from 10 people to 1.25, increased productivity by 30% & it costs just a few thousand per year in tokens.

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• BlogWhen Inbound Sells Itself

  Jeanne DeWitt Grosser, COO of Vercel, reports 90% automation of inbound sales development, a support agent handling 93% of cases, a 32x ROI on the sales development agent, & a total annual infrastructure bill in the sin…

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Engineer at Vercel Labs as of 2026. Ships a steady stream of small developer tools — agent-browser, portless, json-render, native-sdk, the v0 SDK — and lists every one of them at ctate.dev.

• Introducing Vercel Labs Tools for devs in the AI era agent-browser, skills, json-render, deepsec, fx, just-bash, portless, vgpu and more We experiment in public: ship early, learn from feedback, and keep working on what people find useful We've been shipping under the Labs name for a while. Now, Labs is an official team at Vercel focused on exploring new capabilities and primitives that change what developers and agents can do. Here's what to expect: → Labs products: maintained, supported, built to be relied on → Active experiments: moves fast, expect rough edges and breaking changes → Past e…

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• New agent-browser skill: agent-browser skills get protected-vercel-deployments Now agents can test Vercel deployments behind Deployment Protection, including preview deployments

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Developer, author and YouTuber covering Raspberry Pi, homelab hardware and Ansible automation. Author of Ansible for DevOps.

• youtube — YouTube channel repo. Stuff that doesn't fit elsewhere.

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Co-creator of Django and creator of Datasette; writes daily at simonwillison.net.

• Built a little local web app to help edit commit messages for a repo

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Co-founder and chief investment officer of Cambria Investment Management. He has written several books on quantitative asset allocation, blogs at Meb Faber Research and hosts The Meb Faber Show.

• .@RobinWigg on the dark matter of finance: "Repo in the US is like a $12 trillion market that nobody really knows about and understands." "Even monetary economists I know who spend their life on this say that anybody spends too much time looking at short term overnight interest rates goes a little bit mad eventually." "You can't always see it. Most people ignore it, but it actually explains the motion of celestial bodies to a huge degree." Listen: https://t.co/Ui5tjyavjZ Watch:

  youtu.be

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Co-founder and chief investment officer of Cambria Investment Management. He has written several books on quantitative asset allocation, blogs at Meb Faber Research and hosts The Meb Faber Show.

• 𝗕𝗼𝗻𝗱𝘀 𝗯𝗲𝗮𝘁 𝗡𝗮𝗽𝗼𝗹𝗲𝗼𝗻, 𝘁𝗼𝗽𝗽𝗹𝗲𝗱 𝗮 𝗽𝗿𝗶𝗺𝗲 𝗺𝗶𝗻𝗶𝘀𝘁𝗲𝗿, 𝗮𝗻𝗱 𝗺𝗮𝗱𝗲 𝗧𝗿𝘂𝗺𝗽 𝗯𝗹𝗶𝗻𝗸. 𝗕𝗼𝗿𝗶𝗻𝗴 𝘁𝗵𝗲𝘆 𝗮𝗿𝗲 𝗻𝗼𝘁. My guest today is Robin Wigglesworth (@RobinWigg), editor of @FTAlphaville and author of A Fabulous Debt, a thousand-year history of the market that sets the price of everything else. We get into: • An Austrian 100 year bond that lost 80%, while a defaulting Argentina paid off better • Why T-bills feel safe but can lose you 50%+ in real terms after inflation • Is private credit the next systemic blowup? • Why the $12 trillion repo mar…

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Programmer, teacher and speaker; long-time Microsoft developer-community figure, host of the Hanselminutes podcast and author of the hanselman.com blog.

• Save a 4K wallpaper as a JPEG, then try to get the 4K back. You can't. A prompt is lossy too. Hand it to someone else and you get a different app. Clone the repo and you get mine. Prompting is not programming, people.

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Free software developer and longtime Debian developer; author of git-annex, etckeeper, ikiwiki and debhelper. Lives and works off-grid.

• Probably time to replace gitweb, cgit, etc with client side js that fetches from the git repo. I would prefer to not build this myself.

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Software architect and futurist; founded ClariNet, chaired the EFF, and has written about robocars for two decades.

• Tesla Cybercab Has Much To Like As A Robotaxi For 2031

  Topic:  Robocars Tags:  forbes The 2 seat efficient design and other features give the Cybercab an edge, but its low cost won't be important until the next decade, so why is Tesla going cheap first?

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Economic historian at Columbia; writes Chartbook on economics, geopolitics and history, and wrote Crashed and The Deluge.

• Top Links 1217 Russian gold through Hong Kong. The birth of repo out of the spirit of the Liberty Bonds. Anger in politics & the failed metrication of the USA.

  Great links, images, and reading from Chartbook Newsletter by Adam Tooze

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Co-founder and CEO of 37signals, makers of Basecamp and HEY; co-author of Rework, Remote and It Does Not Have to Be Crazy at Work.

• Goodbye per-seat pricing. Per-user pricing has always rubbed me the wrong way. And in this agentic age, it feels downright antique. For the vast majority of the time Basecamp has been on offer, we never charged per-user. A few years ago we experimented with one pay-per-user plan, and that experiment just came to an end. And it couldn’t come at a better time. With the Basecamp CLI (and soon MCP, too), you can bring your agents to Basecamp as users too. Charging you for individual agents feels just as wrong as charging you for individual people. So today we have brand new pricing plans with NO…

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Engineer at Vercel Labs as of 2026. Ships a steady stream of small developer tools — agent-browser, portless, json-render, native-sdk, the v0 SDK — and lists every one of them at ctate.dev.

• One more for the night: emulate v0.11 – Shared Next.js/Nuxt adapter runtime with persistent GitHub App key state – Linear issues now expose priorityLabel – GitHub token inspection adds perms, repo access, expiry and status

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Creator of Homebrew, the macOS package manager, and a Swift developer.

• knock-knock — Easy, GitHub sign-in, pre-hosted chat rooms for your GitHub repo

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Former L8 engineer at Meta, Microsoft and Atlassian, now writing and building solo on agentic engineering. Writes Kun's Field Notes and posts a lot about AI coding agents on X.

• vision — Agent skill that mines your repo's history to draft a VISION.md, stress-tests it with hard hypotheticals, and iterates with you on an interactive review board.

  CommitsMake VISION.md the only vision-alignment surface (#2) · doc: agent memory boilerplate · fix(vision board): cosmetic back sheets and a completion CTA (#1)

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Chilean web engineer building web experiences since 2006; co-founder of Media Creators and writes at iolivares.com.

• Private GitHub registries for shadcn will change how corporates ship design systems. npx shadcn list org/repo Same workflow for every team. No more "Figma is the source of truth and the code is a rumor."

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Founder and former CEO of Zynga, the social-games company behind FarmVille, Zynga Poker and Words with Friends; says he founded ten companies in all, and wrote Life at the Speed of Play.

• . @yurimilner was that world class investor. After one meeting he said he wanted to invest and asked me for a valuation. I threw out a number 10 pct below what i figured our next round would be. He said he would wire the money next week. I think it was $150m. Never asked for board seat or any terms. He ttly got what the founder of a high growth company cared about. No meetings. No terms. Dont bother us. Let us cook!
  Quoting@kevinleemeWhenever other founders ask me who my best investors are and who I’d recommend they work with, I name the handful of VCs who rarely bother us and trust us to operate. It’s funny how simply doing nothing as an investor can put you in the top 1% of a founder’s book.

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AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).

• Just saw that the LLMs-from-scratch repository passed 100,000 stars on GitHub! This is super cool and motivating. I am really happy to see that this open-source repo has helped so many people. Thanks also to everyone who shared ideas and opened PRs with improvements! Of course, I plan to keep adding new material, including new attention variants and architectures (while bigger projects like RL and Reasoning From Scratch live in their separate repositories). I am also currently working on a larger applied custom “small” LLM project. It has been keeping me super busy this month, but I will shar…

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Software engineer who writes the blog Made of Bugs about performance, debugging and understanding computer systems. Previously worked at Anthropic on interpretability, at Stripe on Sorbet, and at Ksplice.

• llama — Llama is a tool for running UNIX commands inside of AWS Lambda. Its goal is to make it easy to outsource compute-heavy tasks to Lambda, with its enormous available parallelism, from your shel…

  Commitsci: only build/push image for main pushes and same-repo PRs

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Indonesian software engineer, educator and engineering manager at Zero One Group; open-source enthusiast writing at ripandis.com.

• elph-go — Minimalist AI agent companion.

  Commitsci: convert workflows to examples and archive repo · feat(shell): replace pipe-based I/O with PTY for bash tool calls

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Co-founder of AngelList. Writes and podcasts at nav.al in short, aphoristic pieces on startups, wealth and judgement rather than long essays.

• The AI Industrial Revolution

  Full episode with 20 minutes of new material at the end. With Guillermo Rauch (Vercel), Blake Scholl (Boom Supersonic), and Max Hodak (Science). Nivi: Welcome. You’re listening to Naval Podcast, your authoritative sourc…

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Co-founder of AngelList. Writes and podcasts at nav.al in short, aphoristic pieces on startups, wealth and judgement rather than long essays.

• The Regulatory Frontier

  Part 3 of our four-part discussion with three frontier founders: Guillermo Rauch (Vercel), Blake Scholl (Boom Supersonic), and Max Hodak (Science Corp). Also see Part 1: Waste Tokens, Save Time, Part 2: Vibe Coding Hard…

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JavaScript programmer; creator of the jQuery library, author of Secrets of the JavaScript Ninja, and long-time engineer at Khan Academy.

• deepsec is very cool! I ran it against our main backend repo at @khanacademy and it found some really interesting edge cases. Spun up an agent team in Claude and addressed all the high-impact issues. This likely would've been a multi-week, or month, effort otherwise!
  Quoting@vercel_devIntroducing deepsec, an open source coding security harness. • CLI-first • Sandbox-based scaling • Pluggable coding agents • Designed for large-scale repos • Use AI Gateway or your own subscription After months of successful internal use, we put it to the test on some of the largest open source cod…

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Sociologist at Duke University writing on markets, exchange and moral order, and on plain-text and data-visualisation tools for social science.

• kjhealy.r-universe.dev — RUniverse repo for kjhealy

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Indian value investor who taught Behavioural Finance and Business Valuation as an adjunct professor at MDI Gurgaon. He writes the Fundoo Professor blog about investing, moats and mental models.

• One consequence of Mr. Buffett taking a back seat is that we now get to learn from the people who have moved into the front seat. For the longest time, Ajit Jain operated undercover. Now he is teaching the world how he thinks about pricing risk. Berkshire’s role as a teacher of business and investment management is far from over.
  Quoting@TrungTPhanAjit Jain was asked when Berkshire Hathaway will start insuring ships in the Strait of Hormuz. “Depends on the price”

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American software engineer; worked on code-server at Coder and teaches TypeScript and open-source contribution. Publishes at joeprevite.com.

• scrtch-prj — kljklfdsa-paper.vercel.app/

  CommitsAdd Alt+Arrow shortcut to move list items up/down

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AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).

• Components of A Coding Agent

  How coding agents use tools, memory, and repo context to make LLMs work better in practice

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Chilean web engineer building web experiences since 2006; co-founder of Media Creators and writes at iolivares.com.

• ivolivares — My Special Repo

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Software engineer; co-founder and former CTO of Tailscale, previously on the Go team at Google.

• yeah — yeah: LLM-powered yes/no CLI tool

  CommitsPass --skip-git-repo-check to codex exec · Print backend in verbose mode · Auto-discover LLM backends instead of hardcoding exe.dev gateway

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Indian software engineer working on Android and React; writes about his setup and side projects at ishubhamsingh.dev.

• shipdoc — README + Changelog generator for GitHub repos

  Commitsfeat: brand logo, favicon, and rename ShipDocs → ShipDoc · feat: add Vercel Analytics · fix: render modal via React portal to escape topbar stacking context

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Designer and technologist; author of The Laws of Simplicity; former president of the Rhode Island School of Design; formerly at the MIT Media Lab.

• Claude Status Line Mod

  I wanted to use this https://github.com/fatih/dotfiles/blob/main/claude/statusline-git.sh 2. In ~/.claude/statusline.sh drop the code from the repo into there 3. chmod +x ~/.claude/statusline.sh 4. echo ‘{“model”:{“disp…

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CEO of Vercel; creator of Next.js and Socket.IO. Writes at rauchg.com.

• how-is-this-not-illegal — A demo of using RSC and Vercel Postgres, legally

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Founding member of OpenAI and former director of AI at Tesla; creator of nanoGPT and the term "vibe coding".

• rendergit — Render any git repo into a single static HTML page for humans or LLMs

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Programmer on the Dart language at Google and author of Game Programming Patterns and Crafting Interpreters; previously a game developer at EA.

• temp_dart_style_3.1.0_diff — Temporary repo to show the formatting changes in dart_style 3.1.0

  CommitsFormat using upcoming dart_style 3.1.0. · Format with dart_style 3.0.1.

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Programmer on the Dart language at Google and author of Game Programming Patterns and Crafting Interpreters; previously a game developer at EA.

• temp-eager-split-sample — Temporary repo to show effect of a proposed Dart formatter change.

  CommitsReformat with eager splitting heuristics. · Format using current (dart_style main) formatter at page width 100.

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Programmer based in Vancouver who writes at scattered-thoughts.net about databases, programming language design and developer tools; author of the Imp, Dida and Zest language experiments.

• 0052: hytradboi videos and post-mortem, zest repo, no internet, on social media, my product is my garden, datafusion and clickhouse jits, books

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Programmer on the Dart language at Google and author of Game Programming Patterns and Crafting Interpreters; previously a game developer at EA.

• temp-arg-split-sample-2 — Temporary repo testing out dart formatter tweaks on a random corpus.

  CommitsApply eager splitting heuristic. The rules are: · Reformat using current formatter. · Initial commit.

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Programmer on the Dart language at Google and author of Game Programming Patterns and Crafting Interpreters; previously a game developer at EA.

• temp_arg_split_sample — Temporary repo testing out dart formatter tweaks on a random corpus.

  CommitsInitial commit.

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American software engineer working across web, mobile and TV platforms; writes at sean.is.

• vercel-server-action-bug — This is a simple Next.js app that demonstrates a bug with Vercel functions.

  CommitsAdd github link · Update readme · My 12mb image was causing a body of 44mb

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American software engineer working across web, mobile and TV platforms; writes at sean.is.

• vercel-bug-report — Constants from 'use client' files operate differently

  CommitsIllustrate weirdness · Initial commit from Create Next App

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Programmer on the Dart language at Google and author of Game Programming Patterns and Crafting Interpreters; previously a game developer at EA.

• temp_primary_constructors — Temporary repo for trying out a proposed Dart language feature

  CommitsRequire field parameters to be explicitly marked "var" or "final". · Refactor to use the current primary constructors proposal. · Initial commit.

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Programmer and entrepreneur; co-founded GitHub and created Jekyll, Gravatar and the Semantic Versioning spec.

• gollum-demo — Gollum test repo

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British senior engineering manager at Netlify, previously a team lead at the BBC; writes about JavaScript testing, chatbots and serverless at marclittlemore.com.

• telegram-test-bot — A test Telegram bot using serverless functions with Vercel for deployment

  Commitsfix: remove unnecessary env variable · chore: update dependencies

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Writer and consultant on formal methods and software correctness; author of Practical TLA+ and Logic for Programmers.

• sphinx-github-action-test — A quick repo for testing compiling a sphinx doc and syncing it with S3

  CommitsGet off using the sphinx github action

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Engineer and writer on machine-learning systems; author of Designing Machine Learning Systems and AI Engineering. "I work to bring AI into production. I write about AI system design."

• metaflow-transformers-tutorials — Metaflow tutorials for ODSC West 2021

  CommitsUpdate instructions · Clean up some code · Clean up the repo

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Mac and iOS developer; created NetNewsWire and MarsEdit, co-created the JSON Feed format, and blogs at inessential.com.

• vesper-api — Vesper’s API server.

  CommitsChange 'repository' to 'folder' in the README, so that it's clear that this repo doesn't… · Update README with link to notes on my blog. · Update README with notes about where this code ran.

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