James Snell @jasnell.me · 26/09/2026In flight wifi is spotty so I'm writing code the old fashioned way. 3151
James Snell @jasnell.me · 25/09/2026Way overdue but Node.js is finally getting a `--process-timeout=N` cli flag that will force the process to exit with an explanation of why it was open. github.com/nodejs/node/... 2406
James Snell @jasnell.me · 21/09/2026Ok, so question ... if you could run a warmed node.js as a daemon process listening on either a local domain or TCP socket and dispatch scripts to it if it mean cutting the cold start time in half for scripts would that be useful? I've been playing with this for a while now... 560
James Snell @jasnell.me · 19/09/2026My preferred debugging technique has always been printf/console.log ... I've been a big fan of the logpoint feature that chrome devtools added that uses conditional breakpoints to inject logging without actually having to change the code. I wanted to experiment to see how it could work in Node.js... 2120
James Snell @jasnell.me · 03/09/2026Holding down the floor is serious business. Here it takes three or four at once to accomplish it. The fact that Watson holds it down all by himself is truly impressive. 100
James Snell @jasnell.me · 10/08/2026In the category of New-Awful-Things-You-Can-Do-With-JavaScript-Because-It-Just-Lets-You-But-Should-Not-Ever-Do Explicit Resource Management Edition: 3121
James Snell @jasnell.me · 09/08/2026Lots of people have been asking me about my dogs when I attend conferences. Since so many people have shown they care, I had stickers made! These will likely be making an appearance at @renderatl.com 080
James Snell @jasnell.me · 22/07/2026Very happy to say that @cloudflare.social is a Diamond level sponsor for this year's @nodeconf.eu ... also thankful for all our sponsors! 1212
James Snell @jasnell.me · 14/07/2026Reviewing my kid's merge requests at work is fun ... When I hit "request changes" I get to pretend he actually has to listen! 1240
James Snell @jasnell.me · 20/06/2026You're not alone, @jenmsft.bsky.social ... My favorite one.... Which is obvious because taking your time and not rushing through it is always better. 010
James Snell @jasnell.me · 31/05/2026The nest is officially empty. Youngest son driving away with the last of his stuff on his way to new adventures. 4530
James Snell @jasnell.me · 16/05/202632 parallel server instances, with reusePort=2, simple hello world benchmark on localhost (h2load to node.js quic).. roughly 2 million http3 req/s ... not a bad result. No errors, no memory leaks, no crashes. That's enough perf tuning for the day. 1202
James Snell @jasnell.me · 07/05/2026There's a certain irony in these activity metrics on the quic blog post ... 260
James Snell @jasnell.me · 22/04/2026About an hour or so before this it was hailing, thundering, pouring down rain, and we even had a tornado warning. 120
James Snell @jasnell.me · 15/04/2026Great Node.js Collab Summit in London the past 2 days. Lots accomplished. 2284
James Snell @jasnell.me · 12/04/2026One thing I don't really talk about much is the fact that my oldest son (now 26) is autistic. He's still working on figuring the world out. He's needing to do his taxes and just sent me this. Which struck me as so pure and innocent and honest that I had to share. 0130
James Snell @jasnell.me · 26/03/2026When Amazon picks up on the fact we have dogs that like to chew on things.... 120
James Snell @jasnell.me · 19/03/2026This sits along side easily with the existing Node.js streams and web streams. It's still experimental but I updated the `FileHandle` API in `fs/promises` to support it as an additional option for reading and writing to files. The fun bit are the performance numbers: 100
James Snell @jasnell.me · 15/03/2026Hey, @rauchg.blue ... As one of those Node.js core developers you're mentioning here... I'd appreciate it if you'd keep me out of this squabble. You've no idea what I want and I've got nothing to do with this conversation. I happen to believe in both Node.js AND Workers, which is why I work on both 2538
James Snell @jasnell.me · 07/03/2026My workflow with opencode/opus is always extremely interactive. It gets lost in the weeds so easily. 140
James Snell @jasnell.me · 03/03/2026For the browser side... the benchmarks are a bit different but here's how it stacks up against chromium's impl of web streams: 020
James Snell @jasnell.me · 03/03/2026Fixed up some perf issues and benchmark bugs in the new-streams reference impl ... some highlights running comparisons on @nodejs.org @deno.land and @bun.sh ... note each column is just looking at the one runtime, not comparing runtimes against each other ... 2142
James Snell @jasnell.me · 27/02/2026... Obviously, take all the usual "Benchmarks are usually fundamentally flawed" caveats into consideration when looking at those numbers. Also, these are the numbers when checked against Node.js. What do the numbers with Deno and Bun look like? Here are Deno's numbers for the same benchmarks: 110
James Snell @jasnell.me · 27/02/2026One bit that's worth emphasizing more on the new streams api discussion is the absolute cost of the current web streams model. Node.js' web streams impl has never been perf optimized but 90x faster is still ... something ... 192
James Snell @jasnell.me · 20/02/2026The joke of an administration should be forced to refund every dime of the illegally collected tarrifs 030
James Snell @jasnell.me · 10/02/2026These idiotic snowflakes are... Well.... We know what they are, don't we. 040
James Snell @jasnell.me · 01/02/2026To be fair, the experimental stuff doesn't always win in the benchmarks... yet ;-) 000
James Snell @jasnell.me · 14/12/2025Way to put absolute minimal effort Random Amazon delivery guy. He pulled up, didn't even get out of the car. Leaned out and dropped the box on the ground and left it there. 330
James Snell @jasnell.me · 14/12/2025If you know what this is, and if you've ever had to get one unjammed before, congratulate me. This was perhaps one of the worst ones I've ever seen. Literally broke three separate pitman pullers before we managed to actually get it broken free. Ultimately required torching, a puller, and a fork... 220
![const { AsyncLocalStorage } = require('node:async_hooks');
class Foo {
#als = new AsyncLocalStorage();
doSomethingWithCleanup() {
this.#als.run(123, () => {
using self = this;
// .. do something here...
});
}
[Symbol.dispose]() {
console.log(this.#als.getStore());
}
}
f = new Foo();
f.doSomethingWithCleanup();](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:benxh5zltpietbgknd2l3jmq/bafkreig7fi7fxnywl4bm6tldkecqhocgewqsm6grhnq5sl24l55347vttq)
