flimsy
S
flimsy | S | |
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2 | 9 | |
177 | 1,229 | |
- | - | |
5.9 | 0.0 | |
3 months ago | over 1 year ago | |
TypeScript | JavaScript | |
MIT License | MIT License |
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flimsy
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Super Charging Fine-Grained Reactive Performance
An implementation of this might look like the following (code by Fabio Spampinato):
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Preact Signals
These are difficult to understand concepts imo. I have written an annotated implementation of a simple reactive system (you may want to run it through Prettier if that's your thing): https://github.com/fabiospampinato/flimsy/blob/master/src/fl...
A signal is basically a function that you have to go through to read and write a value. In the case of Preact the function is split into getter and setter assigned to the "value" property. The interesting thing about signals is that they can tell their parent computation to re-execute, automatically, without any manual dependency array.
A computed is a signal generated from a function rather than a primitive. So like the function that generates the value is re-executed automatically whenever any of the signals read inside it change.
S
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Proposal: Signals as a Built-In Primitive of JavaScript
Related is S.js: https://github.com/adamhaile/s
I love signals. I prefer them when making UIs over any other primitive (besides, perhaps, the cassowary constraint algorithm). I try to replicate them in every language I use, just for fun.
I also don't believe they belong in the Javascript language whatsoever. Let the language be for a while, people already struggle to keep up with it. TC-39 is already scaring away people from the language.
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Humble Chronicles: Managing State with Signals
"Signal" has been used in FRP circles for some time [1,2]. The original FRP stuff was events/signals and behaviours. But I agree that JS didn't use this terminology until more recently. S.js is maybe one of the earlier ones, but that was still over 8 years ago.
[1] https://scholarworks.rit.edu/cgi/viewcontent.cgi?article=651...
[2] https://github.com/14427/signal
[3] https://github.com/adamhaile/S/tree/e897ec1212a073bb1fe695e1...
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Super Charging Fine-Grained Reactive Performance
Fine-grained reactivity libraries have been growing in popularity recently. Examples include new libraries like Preact Signals, µsignal, and now Reactively, as well as longer-standing libraries like Solid, S.js, and CellX. Using these libraries, programmers can make individual variables and functions reactive. Reactive functions run automatically, and re-run 'in reaction' to changes in their sources.
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Answering Common Questions about Krestianstvo SDK 4
No. Krestianstvo SDK 4 is introducing its own implementation of Croquet Application Architecture in JavaScript, based on Solid JS & S.js using Functional Reactive Programming (FRP).
- Introducing Preact Signals: a reactive state primitive that is fast by default
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Krestianstvo SDK 4 | Implementing Croquet and Recursive Portals on Solid JS
SolidJS / S.JS
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Show HN: A tiny (850B) and fast reactive observables library via functions
Cool! This reminds me of S.js [0] which I've used a decent amount to great effect, but it seems about half the size. I'll have to look at how they compare (though if someone knows off the top of their head that'd be appreciated). S.js is nice because it has a helper library (surplus) for dom things.
[0]: https://github.com/adamhaile/S
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Writing a reactive library in Javascript [from scratch]
There are a lot of good libraries and frameworks to handle state management and reactivity. From simple and short utilities such as S.js to heavy solutions like Solid.
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JavaScript is whats wrong with JavaScript :)
except that is wrong... you're welcome.
What are some alternatives?
signals - Manage state with style in every framework
valup
usignal - A blend of @preact/signals-core and solid-js basic reactivity API
oby - A rich Observable/Signal implementation, the brilliant primitive you need to build a powerful reactive system.
dependable-example-todomvc - TodoMVC example in @dependable/view
incremental-rs
dependable-example-hackernews - Hackernews example using @dependable
racket-gui-easy - Declarative GUIs in Racket.
dependable-state - Observables and computeds for state management
krestianstvo - Krestianstvo SDK 4 is the OSS implementation of Croquet architecture in functional reactive paradigm using Solid JS. For developing serverless collaborative and multiplayer applications.
jotai - 👻 Primitive and flexible state management for React
cellx - The ultra-fast implementation of reactivity for javascript