reselect
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reselect | Immer | |
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46 | 141 | |
18,996 | 26,867 | |
0.0% | 0.7% | |
9.6 | 7.2 | |
about 23 hours ago | 7 days ago | |
TypeScript | JavaScript | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
reselect
- Redux Toolkit 2.0: new features, faster perf, smaller bundle sizes (plus major versions for all Redux family packages!)
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Redux Toolkit 2.0: new features, faster perf, smaller bundle sizes, and more
- 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 :)
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45 NPM Packages to Solve 16 React Problems
reselect -> For making faster queries to store.
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Top 7 Libraries for Blazingly Fast ReactJS Applications
Reselect solves this problem by memorizing the values and only passing whatโs necessary.
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20 Essential Parts Of Any Large Scale React App
reselect : Selector library to optimize your store access
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Revolutionize Your React App with Redux: A Beginner's Guide to Simplifying State Management(PART 2)
Reselect documentation:
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20 Best Libraries and Tools for React Developers
Reselect is a library for creating memoized โselectorโ functions. Commonly used with Redux, to slice state and provide just the necessary subtree to a React component.
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Please review my 1st react project
For the redux part, you need to use two hooks. The first one is for sending data and that is useDispatch and for getting data from redux is useSelector. This link will help you a lot. The only that left is Reselect concept. The thing with redux is that when you update one state inside of the redux store the whole thing updates itself so basically it may cause you to re-render your components. Reselect will prevent that but it's a little bit advanced topic whenever you were comfortable enough with redux I suggest you learn to use reselect. Other than these Really good work with the project.๐๐ welcome to the community. ๐
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Killing mutants to improve your tests
At my current client we're working on having a frontend architecture for writing SPAs in JavaScript similar to re-frame's one: an event-driven bus with effects and coeffects for state management[1] (commands) and subscriptions using reselect's selectors (queries).
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TypeScript is terrible for library developers
Heh, it's amusing to see Redux Toolkit referenced here. I'm one of the two main RTK maintainers. My co-maintainer Lenz Weber is responsible for most of our TS type wizardry.
Agreed that writing TS types for libs can be a pain. I actually did a talk recently on "Lessons Learned Maintaining TS Libraries" [0], where I talked about some of the techniques we used, and some possible TS changes that would be helpful for us as maintainers.
As one recent example, TS made a change in a 4.8 pre-alpha that broke RTK's `createSlice` types. Lenz tried to come up with a fix, couldn't, and had to add a workaround to check what TS version is being used and specifically use an altered type. Since there _isn't_ a good way to know what TS version is being used, Lenz resorted to hacking together a new package that abuses the `typesVersions` property to define a different TS type for _every_ TS major+minor version combo, and then used that to decide what the RTK type should look like conditionally [1].
Another pain point is debugging type transformations. I reworked the Reselect types in 4.1.x to do a much better job of inferring the argument types for the final selector, based on the intersection of all the input selector arguments. This ended up as a monstrous type that does a types-level map + transpose + intersection [2]. It took me weeks to get this working right, and I frequently had to break it down into multiple small intermediate types to see how TS was processing each step.
I know that someone on Twitter was recently working on an alternate TS type-checker based on bytecode, and they said they had some kind of a working types-level debugger [3]. Having something like that officially, where I could see each step of how TS was transforming the types, would be _hugely_ valuable.
There's a couple folks like AndaristRake who are able to dig into the internals of the TS compiler itself to trace how it's interpreting the types. I definitely don't have that ability :)
[0] https://blog.isquaredsoftware.com/2022/05/presentations-ts-l...
[1] https://github.com/reduxjs/redux-toolkit/pull/2547
[2] https://github.com/reduxjs/reselect/blob/v4.1.5/src/types.ts...
[3] https://twitter.com/MarcJSchmidt/status/1539787500788613120
Immer
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Immer VS mutative - a user suggested alternative
2 projects | 25 Jan 2024
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Show HN: Cami.js โ A No Build, Web Component Based Reactive Framework
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It looks like itโs 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!
โ-
- Why do we need modules at all?
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Making Sense of React Server Components
I heard that immutability libraries like immer.js [0] help with this. Anyone go this way and had good success? Is this 'the way'?
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The sword refers to immer, the faster and stronger immutable data js tool limu stable version released!
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.
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Ramda: A practical functional library for JavaScript programmers
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.
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Is there a better way to do read-only types
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/)
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5 React Libraries to Level Up your Projects in 2023
If you want to set up from Context, Zustand is your best bet. It offers an extremely simple API that lets you create a store with values and functions. Then, you can access that store from anywhere in your application to read and write values. Reactivity included! If you want to store nested object data in your store, consider using Immer alongside Zustand to easily change nested state.
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What are some of the best libraries you cannot work without?
immer
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How to synchronize access to application data in multithreaded asio?
I don't know about immer, do you mean the JavaScript library immer?
What are some alternatives?
immutability-helper - mutate a copy of data without changing the original source
immutable-js - Immutable persistent data collections for Javascript which increase efficiency and simplicity.
redux-toolkit - The official, opinionated, batteries-included toolset for efficient Redux development
Recoil - Recoil is an experimental state management library for React apps. It provides several capabilities that are difficult to achieve with React alone, while being compatible with the newest features of React.
react-query - ๐ค Powerful asynchronous state management, server-state utilities and data fetching for TS/JS, React, Solid, Svelte and Vue. [Moved to: https://github.com/TanStack/query]
valtio - ๐ Valtio makes proxy-state simple for React and Vanilla
zustand - ๐ป Bear necessities for state management in React
mori - ClojureScript's persistent data structures and supporting API from the comfort of vanilla JavaScript
recompose - A React utility belt for function components and higher-order components.
redux-saga - An alternative side effect model for Redux apps
use-context-selector - React useContextSelector hook in userland