sbt-tpolecat VS Immer

I'm awed by the maturity of the Scala 2 compiler. Every minor version in the 2.13 series adds a new linting improvement. You can see that if you have sbt-tpolecat in your project. I'm always happy to see that some option from Wartremover is no longer used.

Note that this assumes that non-Unit values are silently thrown away, which you should always configure scalac, preferably via sbt-tpolecat, not to allow.

sbt-tpolecat to automatically provide reasonable Scala compiler settings.

Start with settings strict compiler flags if you haven't already, for instance using sbt-tpolecat. This will help you remove the most obvious warts in your codebase.

However, after a while, I found that most of the things I needed were already covered by the compiler. And that Rob's (aka tpolecat) list of compiler options provided all the ones I needed for my style of coding. I Then learn that there was this sbt plugin that managed the list for me and also took care of changing the options according to the Scala version.

Sorry, have nothing useful to contribute (although I'd recommend you to set a restrictive set of scalac flags, for example from sbt-tpolecat, to let compiler help you), but just wanted to praise the Scala team and remind us of all those "Python 3 situation" rants we've saw 2 years ago and how silly they look now.

Immer is a lightweight package that simplifies working with immutable states. Immutable data structures ensure efficient data change detection, making it easier to track modifications. Additionally, they enable cost-effective cloning by sharing unchanged parts of a data tree in memory.

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It looks like it’s mutating, but both the reducers and update() uses immer* under the hood, so we still respect immutability under the hood.

Cami supports redux devtools so you can use that for time-travel debugging too!

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* https://github.com/immerjs/immer

I heard that immutability libraries like immer.js [0] help with this. Anyone go this way and had good success? Is this 'the way'?

[0]: https://immerjs.github.io/immer/

So, that's what we built, and we built it in the most obvious way — using JavaScript Proxy objects to track mutations and reflect those changes across Appsmith’s framework. Initially things looked good — it worked, aside from a few hacks to make some data types work with map and set, and we were following the example of other projects that had similar requirements. If it was good enough for them, it should be good enough for us, right?

But is immer really the ultimate answer? The performance problem of immer is more prominent in large arrays and deep-level object scenarios. See this issue description, many authors in the community began to try to make breakthroughs, and noticed that structura and mutative, I found that it is indeed many times faster than immer as they said, but it still fails to solve the problem of both fast speed and good development experience. I will analyze the two issues in detail below.

I like immer for this kind of thing: https://github.com/immerjs/immer

It gives you immutable updates without getting bogged down in FP abstractions.

I've always been a huge fan of immer for these case. For your code, it would simply turn into setGridData((prev) => produce(prev, draft => applyChanges(changes, draft)) but I recommend you go over their documentation to fully understand how it works

If you're trying to make things actually immutable, Object.freeze and deep copies can clutter things up pretty good, have you considered using something like immer? (https://immerjs.github.io/immer/)