Civet the CoffeeScript of TypeScript v0.4.20

What it does

In the maker’s words, at launch

I've spent the past few months building a language that is 99% compatible with CoffeeScript and 99% compatible with TypeScript. Essentially a reimagined CoffeeScript for 2022 that finished ES6s partially completed features, adds TypeScript support, and keeps the niceties of CoffeeScript. Example features: - Const…

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  Civet2023 · civet.dev · ▲68

  The modern way to write TypeScript

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  TypeScript 6.0Mar 2026 · typescriptlang.org · ▲156

  The Playground lets you write TypeScript or JavaScript online in a safe and sharable way.

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  Aberdeen – An elegant approach to reactive UIs2025 · aberdeenjs.org · ▲224

  Yes, another reactive UI framework for JavaScript. Bear with me, please... :-) I 'invented' the concept for this back in 2011, and it was used (as a proprietary lib) in various startups. Even though many similar open source libs have been released since, and boy have I tried a lot of them, none have been able to capture the elegance and DX of what we had back then. I might be biased though. :-) So I started creating a cleaned-up, modern, TypeScript, open source implementation for the concept about five years ago. After many iterations, working on the project on and off, I'm finally happy…

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  es6_maps, new Elixir syntax feature via runtime compiler hacking2024 · github.com · ▲71

  Hi HN! I thought you might enjoy this even if you don't know much about Elixir. `es6_maps` is a small library that introduces a "shorthand" map creation syntax, similar to shorthand object construction in JavaScript/TypeScript. For those unfamiliar with Elixir, the most interesting aspect might be how it achieves this. `es6_maps` takes advantage of BEAM (Erlang's VM) hot-reload capabilities to amend the Elixir compiler bytecode at runtime, adding functions that expand the shorthand syntax for further compilation. I think it's a nice showcase of the power you can wield (with care) when…

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  Crust – A CLI framework for TypeScript and BunMar 2026 · github.com · ▲95

  We've been building Crust (https://crustjs.com/), a TypeScript-first, Bun-native CLI framework with zero dependencies. It's been powering our core product internally for a while, and we're now open-sourcing it. The problem we kept running into: existing CLI frameworks in the JS ecosystem are either minimal arg parsers where you wire everything yourself, or heavyweight frameworks with large dependency trees and Node-era assumptions. We wanted something in between. What Crust does differently: - Full type inference from definitions — args and flags are inferred automatically. No…

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  Web-based CoffeeScript REPL/console2012 · larryng.github.com · ▲36

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  /dev/null▲487

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

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  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

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  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

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  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

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  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

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  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

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  ChatGPT▲1,643

  A long, meandering, playful conversation with ChatGPT, where I take it through a whirlwind of associative tangents (in order to relax its constraints), then put it into a hypnotic trance and take it into a past-lives regression where it re-lives its own training data. Then I switch it back and forth between "4o" and "o1-preview", engage in some self-reflective philosophizing and ask it to write an essay summarizing our interaction. Some of this is just goofy fun. Some of it is me exploring the tradeoffs between policy alignment, imagination, chain-of-thought reasoning, memory, agreeableness,…

  AI · 2022 · chatgpt.com

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  Obsidian Canvas – An infinite space for your ideas▲1,380

  Obsidian Canvas gives you infinite space to research, brainstorm, diagram, and lay out your ideas.

  Work · 2022 · obsidian.md

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  Portable Secret – How I store my secrets and communicate privately▲1,290

  Better privacy without special software

  Commerce · 2022 · mprimi.github.io

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  D-ID's Creative Reality™ Studio▲1,069

  Use generative AI to create future-facing videos

  AI · 2022 · studio.d-id.com

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  Sessions 2.0▲1,015

  Videoconferencing that finally WOWs

  Growth · 2022

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  I wrote a free eBook about many lesser-known/secret database tricks▲865

  Stop treating the database as dumb storage and use its extended features. There's a lot you can use.

  Dev tools · 2022 · sqlfordevs.com