immutable-js VS flux

immutable for JavaScript.

Check out Object.freeze. There's also Immutable.js for working with immutable data.

Use immutability to manage state updates When updating state in your React application, it's important to ensure that you are not mutating the original state object. Instead, you should create a new copy of the state object with the updated values. Immutability makes it easier to manage state updates and ensures that the updates are performed in a predictable and safe manner. Libraries like Immutable.js provide a set of functions that simplify working with immutable data in React applications.

We're wanting to get rid of immutable so I'm trying to replicate what it is about the Record functionality and types that allow this dynamic property access to work. After pulling my hair out looking through the [email protected] type definitions and the actual code, to me it looks like the types are just kind of lying about what's going on ... and it's just working. Does anyone have any ideas how I can replicate this dynamic property access with strong typings?

The Immutable.js README has a much more complete description of immutability and why you might want to use the library. Also worth mentioning that Immer is an alternative which is a bit easier to get started with.

Examples: immutable-js Immer

I can't speak to C# and Java, but the suggestion in this post: ImmutableJS already uses Persistent data structures. (It's the second sentence of their introduction)

Avoiding mutation is just never modifiyng an object, ever. There are tons of implementations of this pattern, notably immutable.js (https://immutable-js.com/), Redux is also an example of this philosophy.

JavaScript is most programers' first introduction to map, filter, and reduce. Easy lambdas made those higher-order functions a staple of a lot of JS code.

Meanwhile, immutable.js[0] is at 10 million downloads per week and rising.

I would add that it's not just the ease of use of lambdas, but the fact that in JavaScript functions really are first class citizens. Most of the other widely used languages that people start on have lambda functions added in as a bit of a hack and only treat some functions as real values.

[0] https://www.npmjs.com/package/immutable

So Flux architecture with the concept of Stores, Dispatchers, and Actions came about (from React team), and then Redux (a simplified version of Flux - for juniors by a junior).

Flux Homepage

Then came Flux.

So the basic fundamental of state management is to cache recurring data which is to be passed along a lot of component hierarchy. Input/Props drilling is one the issue where state management methodology like flux comes to resort. A central global store that will act as hydration of data to our components and probably act as single source to truth for many entities in your application.

https://github.com/gaearon/flux-react-router-examplehttp://ianobermiller.com/blog/2014/09/15/react-and-flux-interview/https://github.com/facebook/flux

Throughout the examples and explanations of Flux architecture -- Facebook's counterpart to React -- action type names are referenced as enum constants rather than strings. (See examples at http://facebook.github.io/flux/) I am just looking for an articulation of why this is the preferred method.

Flux. Redux's claim to fame was capturing Flux's functionality in a simpler API.

I'm reading about Flux but the example Todo app is too simplistic for me to understand some key points.

You should look into the Flux architecture pattern. It provides a clear structure for managing application state, and there are libraries out there that implement the pattern that you can use if you don't want to roll your own state management solution.