Royi Hagigi

Front-End Engineer on the React Apps team @meta, building and other cool stuff

[Royi Hagigi @rhagigi]

We wrote a post about some of the technical aspects of the new Facebook redesign for web, built with React and Relay! Check it out!

[Alexandru Voica 💀 @alexvoica]

We're introducing the new https://t.co/t0PZL74vjg website built using the @Reactjs family of technologies.

Announced at F8 2019, this will be the web experience globally - it’s faster, easier to use, and gives your eyes a break w/ Dark Mode: https://t.co/WWGG6cOwk7

🧵👇

[Royi Hagigi @rhagigi]

@ericgray24 @wxbrad This is straight up copied from ChatGPT.

[Royi Hagigi @rhagigi]

@JustinWx I wish. But I have very very very little hope here

[Royi Hagigi @rhagigi]

@joshuawx_ Some private schools are. Most of the public schools are out because of worries over busses and kids being stuck in the extreme cold *if* something happens. The snow chance is mostly just a catalyst. Plus if you're wrong, it has a much wider impact than a single school.

[Royi Hagigi @rhagigi]

@SCweather_wx Did any model handle Dallas well? FV3 maybe?

[Royi Hagigi @rhagigi]

@JustinWx @omvyas833 Curious why not? Kinda crazy to see a total bust like that on the NAM

[Royi Hagigi @rhagigi]

@Daniel_Bonds Kinda random I know but any chance you could have the graphics folks make those city names less prominent/blocking? Like the "ATLANTA" and its gray background blocks basically the entire city of Atlanta and you can't tell where the line between snow/sleet is at any given time.

[Royi Hagigi @rhagigi]

@SafAriInTheCity @AFCEMA @AnthonyMKreis Our school won't bring hte kids in until this guidance is issued - in the meantime they're out there breathing this gunk

[Royi Hagigi @rhagigi]

@Decaturish It’s brutal outside

[Royi Hagigi @rhagigi]

@StatisticsFTW @natebirdman I mean yeah it re-parents the components so they would remount. There's no way to get it to retain the current tree as a *suspense fallback*. BUT if you useTransition/startTransition, you can handle your loading state AND show the current tree while the transition is pending.

[Royi Hagigi @rhagigi]

@AdamRackis We're not using RSC at all (yet). Some experimentation but mostly, no, just regular old SSR for initial load.

[Royi Hagigi @rhagigi]

@joshuat Thanks, I ended up getting an invite from @kpk (thanks again!) but 😂 bluesky account creation is currently disabled... Which basically underlines my point about failing to strike while the iron is hot!

[Royi Hagigi @rhagigi]

You know I'd really love to switch over to bluesky but I'm still on the waitlist. Not that I'm all that important or anything but it feels like if they wanted to take advantage of the situation, you'd think twitter's competition would try to open up a bit faster?

[Royi Hagigi @rhagigi]

@brian_d_vaughn That's terrible

[Royi Hagigi @rhagigi]

What are "tweets" on bluesky called? Word Clouds?

[Royi Hagigi @rhagigi]

@_developit I tried googling for this workaround and haven't seen any prior art but trying it myself in a classic worker seems to do the trick fine and let me still "do CPU work" while the script is fetching.
Parse/compile/exec still block but that's not nearly as bad as blocking on the IO.

[Royi Hagigi @rhagigi]

Is there any way to reliably detect if you're running inside of a "type="module"" WebWorker vs a "classic" WebWorker?

The only way I can think of is calling importScripts and checking the error message, but that's not very robust...

cc @_developit maybe?

[Royi Hagigi @rhagigi]

@_developit Random followup Q: You ever heard of anyone "polyfilling" async script import() on classic workers by doing:

fetch(scriptURL)
.then((res)=>res.text())
.then(s => importScripts( 'data:application/javascript;base64,' + btoa(s));

? Not ideal but maybe better than blocking.

[Royi Hagigi @rhagigi]

@_developit Thanks for this. I think the missing piece I had was trying to use `data:,` as the test script - that lets it actually work on classic without any overhead. Thanks!!