Super excited that the fundamental idea behind #mobx and so many other reactivity based libraries now has a proposal to become part of the JavaScript standard! github.com/proposal-signa…

Increasing the fidelity of types in TypeScript using arranged field definitions

github.com/microsoft/Type…

A lot of smart folks have been working on this proposal to bring native signals to JavaScript.

…Also I’ve been helping the smart people.

Have a look.

github.com/proposal-signa…

Last week at MST we:

1. Upgraded to TypeScript 5.3.3
2. Swapped over to Bun for package management
3. Fixed a long-standing TypeScript bug

This week, keep an eye out for more TS fixes, a preview release, and maybe some new utilities for modeling your application state!

Here is a story how I went full DHH on my most popular npm package (1/n)🧵

Weekly Downloads:
React: 21,618,903
React Native: 1,857,738
Prettier: 32,203,016

vjeux ✪ has worked on some of the most prolific Open Source projects for the web that we've ever seen -- and good news for us! He's gonna reveal how the source-age gets made!

reactmiami.com/speakers/vjeux

Thanks so much Michel Weststrate (threads.net@weststratemichel) for creating #MobX ! MobX shaped my thinking about designing software and inspired me for this observable implementation.

I feel bad that the #MobX website for Dart is so much more slick than the JS version 😅(mobx.netlify.app vs mobx.js.org/README.html). Awesome Job Pavan Podila!

Kyiv is under brutal attack! 99 missiles fired by Russia at civilians. No alternative for the EU than to step up support for Ukraine now. Militarily, financially.

Putin is at war with the European way of life that Ukraine defends. Wake up, Europe!

I think people would be surprised how much discussion, cross-pollination, and inspiration there is amongst various libraries. (And how much 'competing' lib authors get along!)

Had great chats this year with @tkdodo and Michel Weststrate (threads.net@weststratemichel) despite us 'competing' with each other.

#TypeScript tip: In my workshops I explain the concept of mapped types using 'CloneType'. It copies an object type without any change. I thought it had no practical application. But it does: it merges object intersections (&) and thereby makes types and errors much more readable

Attended in Michel Weststrate (threads.net@weststratemichel)'s TypeScript Deep Dive workshop at React Day Berlin 🗓 Dec. 8 & 12.

So may concepts that I vaguely understood before and now have a much clearer picture. Nice exercises with the last one (building a simple Zod) is my fav. Highly recommend it 👏👏👏

And trust me, part II is always the fun (and headache) part!

We'll discuss all the meta programming tools that we should have been using for MobX-State-Tree Official, except that TypeScript wasn't as advanced back then 😅

I will be doing another run of the #TypeScript Advanced workshop, this time remotely! Tomorrow and Friday (Dec 14/15th). It usually scores a 5 out of 5 rating, and likely the last run of it, so final chance! Details: reactsummit.us/react-workshops
React Summit 💥 Amsterdam/New York & Online

Thanks Adam Rackis! 🫡

Michel Weststrate (threads.net@weststratemichel) was way ahead of time! Svelte 5 reminds me of MobX where they use proxied state!

This is why I love MobX :)

I think I'll do a Twitch stream, or series of streams, where I convert Reactotron's current useReducer/context mess to a clean MobX-State-Tree state management setup.

I will be doing another run of the #TypeScript Advanced workshop, this time remotely! Dec 14/15th. Likely the last run of it, so final chance! Details: reactsummit.us/react-workshops React Summit 💥 Amsterdam/New York & Online