effector-react VS reselect

In its docs, Astro recommends nanostores, but I’ve used effector in the past. And LOVED IT. So I’ve used it for this project as well.

I've been using effector, together with the apollo-client for the last few years and, while it works, it's completely detached from the actual screens. In other words, you need to fetch everything (at startup) you might use at some point and it stays in the memory for the entire duration of the session. Error handling is also tricky as you need to explicitly subscribe to the specific error stores in order to render them. And, if something goes wrong, it's tricky to tell what data is actually used in the current screen, so it's almost impossible to do the Retry efficiently. OTOH the screens are nice and simple - no spinners, the data is just there, thus the app feels (and is) fast.

Actually, Svelte uses Effector for state management under the hood. You can read more about it here: https://effector.dev/. It also has bindings for other frameworks including React, Vue and Solid. Effector is a little not beginner-friendly, but once you truly understand it, Effector becomes a very powerful.

A state-management library.

Effector it is the another way to create state and business logic for your frontend application.

https://effector.dev/ here you go

Then I found Effector which seems to have the same features, and SolidJs support.

Where’s effector?

https://ngneat.github.io/elf/ https://effector.dev/

- Throws better errors in an RSC environment

- https://github.com/reduxjs/react-redux/releases/tag/v9.0.0

## Reselect 5.0:

- Switches to a new `weakMapMemoize` memoizer as default

- Renames `defaultMemoize` to `lruMemoize`

- Allows passing memoizer options direct to `createSelector`

- Many TS improvements

- https://github.com/reduxjs/reselect/releases/tag/v5.0.1

## Redux Thunk 3.0:

- Drops the default export and switches to named exports ( `{thunk, withExtraArgument}` )

- https://github.com/reduxjs/redux-thunk/releases/tag/v3.1.0

This has been a _huge_ year-long development effort!

We're thrilled to get these improvements out. The tooling and bundle improvements will help all users, and we think the features and TS changes will improve the Redux dev experience significantly.

Thank you SO MUCH to everyone who has contributed or helped test out the work!

Please file bug reports for the inevitable issues that pop up post-release!

but now I'm going off on a conf trip and going to take a very well-earned break from Redux work for December :)

reselect -> For making faster queries to store.

Reselect solves this problem by memorizing the values and only passing what’s necessary.

In addition, diagnosing bugs in how data flowed through the application (where data originated from, how it was changed, etc.) was always super painful because I had to backtrack through selectors referencing selectors referencing selectors. And updating high-level selectors risked breaking something else down the line (even with 100% business logic coverage this was a problem). (This may be chalked up to improper usage of reselect, but I'm curious to hear your thoughts. Is this a common problem?)

reselect : Selector library to optimize your store access

Reselect documentation:

Applying memoization to TypeScript and ReactJS is relatively straightforward. There are several libraries available that provide memoization functionality, such as memoize function from Lodash, reselect or hooks from ReactJS. These libraries can be installed using NPM or Yarn and used in your TypeScript and ReactJS projects.

Generally, all you would need is to have your redux store provider at the very top level of your application (You could also only wrap the components that you want to have this data available to). Then, any component rendered inside that provider can get access to the redux store. The suggested approach ever since hooks were released is to use `useSelector` and `useDispatch` within your component to get the state data that you need. Using a selector library like Reselect is prevalent and keeps your data selection tidy & handles memoization for you.

Reselect is a library for creating memoized “selector” functions. Commonly used with Redux, to slice state and provide just the necessary subtree to a React component.