flimsy
signals
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flimsy | signals | |
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2 | 24 | |
177 | 3,512 | |
- | 4.1% | |
5.9 | 8.8 | |
3 months ago | 13 days ago | |
TypeScript | TypeScript | |
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.
signals
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Svelte 5: Runes
Putting the runic terminology aside and looking into how the signal primitive is implemented should dispel the magic. I learned a lot from examining preact's implementation: https://github.com/preactjs/signals/blob/main/packages/core/...
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React: Fine-grained reactivity should be the norm
https://refactoring.guru/design-patterns/observer/typescript/example https://indepth.dev/posts/1269/finding-fine-grained-reactive-programming#how-it-works https://legendapp.com/open-source/legend-state/ https://legendapp.com/open-source/state/fine-grained-reactivity/ https://www.builder.io/blog/usesignal-is-the-future-of-web-frameworks https://dev.to/ryansolid/a-hands-on-introduction-to-fine-grained-reactivity-3ndf https://medium.com/hackernoon/becoming-fully-reactive-an-in-depth-explanation-of-mobservable-55995262a254 https://preactjs.com/blog/introducing-signals/ https://hygraph.com/blog/react-memo
- Why are signals still not so popular?
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Is redux ecosystem still active?
All the frameworks are starting to adapt them. You can easily add them to react project as well. https://preactjs.com/blog/introducing-signals/
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DreamBerd; Perfect Programming Language
Signals are a design paradigm for reactive programming which have recently trended in the JS frontend space. For e.g., https://preactjs.com/blog/introducing-signals/
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Which UI framework should I pick up as my first?
Compare Vue's reactivity system to the principles the Preact authors write about here:
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Super Charging Fine-Grained Reactive Performance
Reactivity libraries are at the heart of modern web component frameworks like Solid, Qwik, Vue, and Svelte. And in some cases you can add fine-grained reactive state management to other libraries like Lit and React. Reactively comes with a decorator for adding reactive properties to any class, as well as prototype integration with Lit. Preact Signals comes with a prototype integration with React. Expect more integrations as these reactivity cores mature.
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Empire (State) has gone 1.0!
State solution should not be a framework, this is what I dislike in riverpod as well.. its a FRAMEWORK... compare to the simple useSignal hook that preact has https://preactjs.com/blog/introducing-signals/ this looks like an overkill.
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React VDOM vs Preact Signal Performance flame graph
Looks like it's coming from here https://preactjs.com/blog/introducing-signals
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Sciter.Android, preview available
Sciter got native (built-in) Signal implementation made after PReact's Signals;
What are some alternatives?
usignal - A blend of @preact/signals-core and solid-js basic reactivity API
jotai - 👻 Primitive and flexible state management for React
dependable-example-todomvc - TodoMVC example in @dependable/view
zustand - 🐻 Bear necessities for state management in React
dependable-example-hackernews - Hackernews example using @dependable
legend-state - Legend-State is a super fast and powerful state library that enables fine-grained reactivity and easy automatic persistence
dependable-state - Observables and computeds for state management
MobX - Simple, scalable state management.
redux-toolkit - The official, opinionated, batteries-included toolset for efficient Redux development
cellx - The ultra-fast implementation of reactivity for javascript
Preact - ⚛️ Fast 3kB React alternative with the same modern API. Components & Virtual DOM.