Justin Bennett

Open-source enthusiast; maker. Co-host of @DevtoolsFM. @recursecenter Alum. Prev at @ValDotTown, @oxidecomputer, @ArtsyOpenSource.

[Justin Bennett @just_be_dev]

Alrighty folks, I've renamed my twitter account from @zephraph to @just_be_dev. Got a placeholder for the old one.

[grant @GrantCuster]

Trying out tabletop as album playing canvas:

[colinhacks @colinhacks]

a lot of people think Reylo is some kind of IDE plugin.

it's not. the demo runs on vanilla VS Code, with the official TypeScript 7 extension and typescript@beta installed.

content mappers are a native TS feature, so you get LSP integration for free.

[Flo @flohoeller]

Agent ledger component – review and undo what your agent changed

[boris @boristane]

today we're launching @polylane for @Cloudflare

let proactive agents continously watch your workers, durable objects, workflows, etc.

they fix bugs, improve performance and handle all your alerts

we have this on our own prod account and we merge ~8 pull requests every day

[Justin Bennett @just_be_dev]

software should inspire whimsy and delight

[Brooklyn! @imbabybrooklyn]

Little preview of something I've been working on!

You can connect to any provider, or through any harness like Hermes Agent, and the setup is instant with no configuration required, unless you want to.

Proactive, self-aware, and will be fully open source

[Adam Rankin @rankintweets]

Effect is one of the best things that has happened to our tech stack at Warp. Sponsoring this was the easiest decision ever

[Matt Pocock @mattpocockuk]

Let me put my TypeScript hat back on for a minute

Content mappers look outrageously exciting. This is now possible:

1. import any non-TypeScript file (markdown, vue, svelte)
2. Write a content mapper to extract types from it
3. Run tsc with --runExternalCode
4. You get type inference from NON TYPESCRIPT CODE

The simplest case:

1. Import a markdown file
2. Add a bit of config to tsconfig.json
3. Run tsc with --runExternalCode
4. Get fully typed markdown frontmatter

Unbelievably useful, a dreamland for tinkerers

[Justin Bennett @just_be_dev]

@__steele What does the keyboard look like?

[Rhys @RhysSullivan]

consider rotating the shapes in your mind

[Devin Jameson @devinjameson]

In before @alchemy​.run/domain is all the rage. :)

https://t.co/bhHg63Odxd

[Justin Bennett @just_be_dev]

@devinjameson @Alchemy Gonna be such a banger release!

[Can Bölük @can1357]

An interesting primitive for those working on durable harnesses:
https://t.co/PbtkM77Rzf

QuickJS with typescript support out of the box as well as a snapshottable & resumable heap. You can persist the state and resume on a different machine, or fork, even in the middle of a loop.

[Tommy Falkowski @TommyFalkowski]

Nothing to see here folks just pi-durable running inside an ios keyboard extension fully local using the dumb apple model

[Justin Bennett @just_be_dev]

@burcs Now that’s a cozy site!

[Justin Bennett @just_be_dev]

@Cloudflare connect was pretty fun. Definitely inspired, made some new friends, got to see some old ones. Also good to be back in NYC tho. Feel like I could sleep for a week.

[Justin Bennett @just_be_dev]

@GrantCuster @stevekrouse @FolkComputer @xhfloz I just got a studio space so likewise! I’m inspired by your setup, want to do something similar.

[Kit Langton @kitlangton]

new ui lib comin

(ignore ugly recording banding artifacts)

[Miguel Ríos Berríos @MiguelriosEN]

Day 3 of open sourcing our harness as pi-extensions: pi-durable-disk and pi-transport. We use both to run agents from anywhere. For us, the agent is the workspace. And the workspace lives in @archildata.

With @pidotdev durable, the session DB also lives in the disk. We can mount and unmount it from its sandbox, and run the pi loop from a web browser (w WASM) or a @modal VM with GPUs - sometimes in the same session.

Even easier, with Archil's serverless execution, we can run simpler agents. For example, we have an agent in-process go through 100s of GBs in Claude Code sessions and recall the entire history of a project in seconds.

[Justin Bennett @just_be_dev]

@GrantCuster @stevekrouse @FolkComputer @xhfloz WAIT! @GrantCuster I didn't know you were in Brooklyn. What the hell man, let's hang out. (Also @stevekrouse, always down man).

[⁵⁄₉ @fiveoutofnine]

So basically, today PHP got two critical bugs that let anyone run code on your server without even logging in, which is bad, and then the details leaked before the patch was even out, which is worse, and it works on WordPress and MediaWiki and Magento and Joomla and Laravel, and Censys says like 1.5 million servers are running a version with no fix, so the NSA was like "take your system offline," and the FBI was like "take your system offline," and CISA and the UK and CERT-EU were all like "take your system offline," and then the Prime Minister of Japan, the actual Prime Minister, posted at 5:55 in the morning telling 48.8 million people to take their system offline, so everyone took their system offline, like the Dutch cybersecurity agency took its own website offline, and the Dutch parliament went offline, and the Port of Rotterdam went offline, and Finland and France and Denmark started pulling government sites, and Wikipedia went down, and https://t.co/QlOXb3COq3 went down, and Asana and GOG and Something Awful went down, and the University of Vienna's webmail went down for some reason, and that's just PHP. Because GitLab also dropped a CVSS 10.0, which is the highest score they give out, for a bug that's been there since 2014, so that's every self-hosted GitLab for twelve years, and then LiteLLM 1.107.0 got hijacked and shipped a credential stealer and a remote access trojan in every single wheel and the Docker images, including latest, and you didn't even have to import it, just installing it was enough, and it's the second time this year, and then Railway paused every deployment on the entire platform because someone got into the environment variables, so now everyone has to rotate every secret they've ever stored there, and TiDB Cloud said someone was walking around inside with stolen credentials for basically a month and an extortion group says they took 10.6 terabytes, and Zeabur got breached for the second time in two months and is just shutting down, like the whole company, and Node.js patched remote code execution and a TLS bypass, and CISA says Plex is being actively exploited, and someone took over 300 Tor exit relays to steal SSH passwords, and SafePay ransomware has hit over 600 critical infrastructure orgs, and India's biggest bank filed a data loss incident, and Japan has been in an official state of emergency in cyberspace since October 9, which honestly explains the 5:55 AM post. Oh, and eMudhra, a certificate authority that's issued over 60 million certificates, whose entire job is proving websites are who they say they are, was supposed to be using private keys that are random numbers over a hundred digits long, and one of them was 4. Just 4. And the others were like 66 and 237. Anyway, it's Wednesday.