Fred Crozatier
@fred-crozatier.dev
Experimental web frameworks, OSS etc https://github.com/fcrozatier/
Organizer - Summer of Math Exposition https://some.3b1b.co/
Founder - Sciency https://sciency.co/
Teacher - https://www.youtube.com/@captain-carre
Organizer - Summer of Math Exposition https://some.3b1b.co/
Founder - Sciency https://sciency.co/
Teacher - https://www.youtube.com/@captain-carre
Functorial reactivity can also deal with more complex operations like item swaps inside lists in the most natural and declarative way
October 16, 2025 at 1:47 PM
Functorial reactivity can also deal with more complex operations like item swaps inside lists in the most natural and declarative way
What's the difference between signals reactivity and functorial reactivity?
TLDR: Signals reactivity is what you get when you project down functorial reactivity to a coarse topology with only one event and no associated data
TLDR: Signals reactivity is what you get when you project down functorial reactivity to a coarse topology with only one event and no associated data
October 16, 2025 at 1:16 PM
What's the difference between signals reactivity and functorial reactivity?
TLDR: Signals reactivity is what you get when you project down functorial reactivity to a coarse topology with only one event and no associated data
TLDR: Signals reactivity is what you get when you project down functorial reactivity to a coarse topology with only one event and no associated data
With functorial reactivity the primitives let you build a faithful communication between your templates and the DOM:
- data and operations are transported to the DOM
- hits the highest level of granularity
- works nicely with view transitions 🤝
What do you think?
- data and operations are transported to the DOM
- hits the highest level of granularity
- works nicely with view transitions 🤝
What do you think?
September 11, 2025 at 1:26 PM
With functorial reactivity the primitives let you build a faithful communication between your templates and the DOM:
- data and operations are transported to the DOM
- hits the highest level of granularity
- works nicely with view transitions 🤝
What do you think?
- data and operations are transported to the DOM
- hits the highest level of granularity
- works nicely with view transitions 🤝
What do you think?
Did you know you can use the `this` keyword for slick #html one-liners?
oninput="count.textContent=this.value.length"
flems.io#0=N4IgtglgJl...
oninput="count.textContent=this.value.length"
flems.io#0=N4IgtglgJl...
August 19, 2025 at 4:31 PM
Did you know you can use the `this` keyword for slick #html one-liners?
oninput="count.textContent=this.value.length"
flems.io#0=N4IgtglgJl...
oninput="count.textContent=this.value.length"
flems.io#0=N4IgtglgJl...
@paolo.ricciuti.me I know you know better than that
August 13, 2025 at 12:17 PM
@paolo.ricciuti.me I know you know better than that
My build pipeline:
1. Strip types
2. That's it
How cool is that?
Native ES modules + TypeScript = ❤️
1. Strip types
2. That's it
How cool is that?
Native ES modules + TypeScript = ❤️
July 29, 2025 at 1:08 PM
My build pipeline:
1. Strip types
2. That's it
How cool is that?
Native ES modules + TypeScript = ❤️
1. Strip types
2. That's it
How cool is that?
Native ES modules + TypeScript = ❤️
Here's why we need the upcoming AsyncContext API in #JavaScript
What do you think is the result of [1,2,3].map(asyncDouble)?
Imagine that on a server...
What do you think is the result of [1,2,3].map(asyncDouble)?
Imagine that on a server...
May 6, 2025 at 8:57 AM
Here's why we need the upcoming AsyncContext API in #JavaScript
What do you think is the result of [1,2,3].map(asyncDouble)?
Imagine that on a server...
What do you think is the result of [1,2,3].map(asyncDouble)?
Imagine that on a server...
We finally have light dismiss for #HTML dialogs!
This means you can now manage your dialogs entirely in html, with zero js:
- open them with an invoker command
- close them with light dismiss
Try it out in Chrome Canary (w/ experimental web features flag)
jsfiddle.net/vco1mdth/
This means you can now manage your dialogs entirely in html, with zero js:
- open them with an invoker command
- close them with light dismiss
Try it out in Chrome Canary (w/ experimental web features flag)
jsfiddle.net/vco1mdth/
January 15, 2025 at 4:22 PM
We finally have light dismiss for #HTML dialogs!
This means you can now manage your dialogs entirely in html, with zero js:
- open them with an invoker command
- close them with light dismiss
Try it out in Chrome Canary (w/ experimental web features flag)
jsfiddle.net/vco1mdth/
This means you can now manage your dialogs entirely in html, with zero js:
- open them with an invoker command
- close them with light dismiss
Try it out in Chrome Canary (w/ experimental web features flag)
jsfiddle.net/vco1mdth/
Now this is hilarious.
I want VoiceOver to read in English, easy right?
After setting every possible language options to English — main language, region, keyboard, VoiceOver itself etc. — this is still what I get (help!)
büllet item 1
büllet item 2
Can you hear it didn't want to stop? 🤣🤣
I want VoiceOver to read in English, easy right?
After setting every possible language options to English — main language, region, keyboard, VoiceOver itself etc. — this is still what I get (help!)
büllet item 1
büllet item 2
Can you hear it didn't want to stop? 🤣🤣
December 13, 2024 at 11:24 AM
Now this is hilarious.
I want VoiceOver to read in English, easy right?
After setting every possible language options to English — main language, region, keyboard, VoiceOver itself etc. — this is still what I get (help!)
büllet item 1
büllet item 2
Can you hear it didn't want to stop? 🤣🤣
I want VoiceOver to read in English, easy right?
After setting every possible language options to English — main language, region, keyboard, VoiceOver itself etc. — this is still what I get (help!)
büllet item 1
büllet item 2
Can you hear it didn't want to stop? 🤣🤣