This reduces a lot of boilerplate so you can focus on the actual app that you are building. Where many would define the reducers, actions, action creators, thunk action creators, etc. This React hook retrieves a frozen (read-only) fragment of the state: You can access deeper objects with the dot selector, which works both on objects and array indexes: It accepts both a string selector and a function selector to find the state that we want: You can dig for nested state, but if any of the intermediate trees is missing then it will fail: This React hook is used to modify the state in some way. When your app starts to grow, best-practices of redux like normalizing your state are recommended. These are based on/inspired by the array and object prototype linked in their names: These methods can be extracted right in the actions or used as a method: Some examples to show how statux works. This one might be for you, but only if you're - like me - in love with React hooks. And React Hooks is no different, our components are now cleaner and the code is easier to reuse than ever. Jump to docs for , useStore(), useSelector(), useActions(), examples. It's small, minimal, clean, extendable, and it has a lovely hook-based API. with Statux you change your state directly: This has a disadvantage for very large and complex apps (100+ components) where the coupling of state and actions make changes in the state structure around twice as hard. You remove a full layer of indirection by not following the Flux architecture. Since this method of state management doesn't require you to use classes, developers can use Hooks to write short But if you are following this Redux antipattern you might not really need Redux, so give Statux a try and it will simplify your code. useStore() behaves as the string selector for useSelector() and useActions() together: Note: useStore() only accepts either a string selector or no selector at all; it does not accept functions or objects as parameters. This reduces a lot of boilerplate so you can focus on the actual app that you are building. A TODO list in 30 lines (see codesandbox]): Load a pokemon list with graphics from an API (see codesandbox): You already saw how to make initial calls on load in the previous example. It handles state management for common components through an easy-to-use interface. I tried with Context for a while, but found that you have to create many contexts to avoid some issues (by design) and found that too cumbersome. I built a library that sits between the simple but local React Hooks and the solid but complex full Flux architecture. React Hooks are a broad set of tools in the React front-end JavaScript library that run custom functions when a component's props change. Instead, try defining a new variable if you indeed want to read it with a default: Or directly access the name with the correct selector and a default if you know user is defined: Statux also provides some helpers for modifying the state easily: // Initial state is { user: null, books: [] }, // If `user` is null, this will throw an error, // Function that accepts the current user, // For the state of: books = ['a', 'b', 'c']. Let’s say we want to keep all of our small WebApp state in localStorage, we can do that as well: This can be applied to Dark Mode as well, since localStorage is sync we can read it before running any React to avoid flashing a white screen first: To reset the initial state we should first keep it separated, and then trigger a reset from the root state (see codesandbox): Why did I create Statux instead of using useState+useContext() or Redux? The easy state management library with React Hooks and immutable state: It allows you to share state across different components of your WebApp with a simple and clean syntax. React Stately provides the foundation and core logic for your component library. First create a React project (try Create-React-App) and install statux: Now we are going to initialize our store at the App root level with a couple of initial values: Finally, use and update these values wherever you want: There are four pieces exported from the library: This should wrap your whole project, ideally in src/App.js or similar. It provides state management thatâs intrinsic to the functionality of the component. Now let’s see how to make API calls to respond to a user action, in this case when the user submits the Login form: The libraries axios and form-mate that we are using here are not needed, but they do make our lifes easier. It accepts a string selector and returns an array similar to React’s useState(): You can access deeper items and properties within your state through the selector: It accepts a string selector that will find the corresponding state subtree, and also return a modifier for that subtree. Jump to docs for , useStore(), useSelector(), useActions(), examples. React Stately is implemented as a library of React Hooks, which allows you to adapt them to your needs through composition. // These are immutable, but this still helps: // For the state of: user = { id: 1, name: 'John' }, https://pokeapi.co/api/v2/pokemon/?limit=151. I’ve followed Hooks’ syntax where possible, with differences only when needed e.g. All rights reserved. Powered by React Hooks React Stately is implemented as a library of React Hooks, which allows you to adapt them to your needs through composition. Feel free to suggest new ones. Pass a selector to specify what state fragment to modify: These actions must be executed within the appropriate callback: There are several helper methods. A library of React Hooks that provides cross-platform state management for your design system. React Stately only provides state management, with no assumptions about the DOM or other view systems. Hookstate is currently my favorite React state management library, even though it's the least popular in the group. // Define the initial state as an object: // Listen for changes on the state and save it in localStorage: // Save this state fragment when it changes: // We then trigger a useActions without any selector, // TypeError - can't define property "name"; Object is not extensible. Try mutating the state of your app for testing (see demo): This will avoid whole categories of bugs for newbies working on your team and experienced devs as well: When you try to mutate the state directly it will throw a TypeError. The whole state is frozen with Object.freeze() so no accidental mutation can drive subtle bugs and stale state. React Stately doesnât make any assumptions about your design. I just wanted useState, but globally. The easy state management library with React Hooks and immutable state: It allows you to share state across different components of your WebApp with a simple and clean syntax. You define the structure of all of your state within the : When your state starts to grow - but not before - it is recommended to split it into a separated variable for clarity: That’s all you need to know for creating your state. React Stately provides the foundation and core logic for your component library. The first returned parameter is the frozen selected state subtree, and the second parameter is the setter. It handles state management for common components through an easy-to-use interface. This is a React hook to handle a state subtree. So I wanted a minimal library that follows React Hooks’ pattern of accessing and writing state, but on an app-level instead of a component-level. This removes a lot of boilerplate commonly seen on apps that use Redux. This setter is quite flexible: See the details and list of helpers on the useActions() section. Copyright © 2020 Adobe. not initial state on a component-level since that’s global: With Statux you directly define the state you want on your actions. There are few reasons that you might care about: When there’s a major shift on a technology it’s a good chance to reevaluate our choices. So here it is, now you can use useStore() as a global useState().
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