react-tracked VS proposal-record-tuple

Automatic render optimization is to do this automatically. Is this possible? It's possible with utilizing proxies. Proxies allow us to detect state property access. I have been working on this for years, and react-tracked is one of the resulting projects that use this technique. We have an internal library called proxy-compare.

While in a smaller application, excessive re-rendering may be unnoticeable or have no negative impact, as your application grows, each re-render may cause delays or lags in your UI. In this tutorial, we’ll use React Tracked, a library for state usage tracking, to optimize our application’s performance by preventing unnecessary re-renders.

The best, and perhaps only approach I have found so far is react-tracked. It does some internal tracking with proxies that I don't quite understand, but it actually works as advertised with a very minimal API.

relevant issue, which is at the crux of this problem: https://github.com/tc39/proposal-record-tuple/issues/387

There are still so many basic things that aren't in the JS stdlib, though. A good example is Map - if you need to use a tuple of two values as a key, you're SOL because there's no way to customize key comparisons. Hopefully we'll get https://tc39.es/proposal-record-tuple/ eventually, but meanwhile languages ranging from C++ to Java to Python have had some sensible way to do this for over 20 years now.

If you’re reaching for structuredClone, what you really want is native immutable Record and Tuple syntax, and the companion “deep path properties” syntax which allows for efficient and ergonomic immutable updates:

- https://github.com/tc39/proposal-record-tuple

It will be called "record" in JavaScript which will swing the popularity back the other way I guess (currently a language proposal)

I suspect considering the strong desire to maintain consistency with JavaScript, we will eventually see something that when the Record proposal passes through tc39

I hope the Record and Tuple proposal makes it through

I mean, I'd love some real immutable/persistent data structures in JS by default, or even some Immer-like syntax sugar. Something like the record/tuple proposal would be awesome.

This will become very useful once Records and Tuples are a thing, because it allows you to store object references in a record/tuple (which by definition can only contain primitives).

Record and tuple is at stage 2

Also, js has an ongoing immutable value data types proposal.