![]() The complete Redux Toolkit documentation is available at. It is designed to simplify common cases for loading data in a web application, eliminating the need to hand-write data fetching & caching logic yourself. RTK Query is a powerful data fetching and caching tool built specifically for Redux. It then shows how Redux Toolkit simplifies those Redux usage patterns. Redux Toolkit also has the RTK Query data fetching API. The Redux Fundamentals tutorial teaches 'how Redux works, from the bottom up', by showing how to write Redux code by hand and why standard usage patterns exist. The createSelector utility from the Reselect library, re-exported for ease of use.createEntityAdapter: generates a set of reusable reducers and selectors to manage normalized data in the store. ![]() createAsyncThunk: accepts an action type string and a function that returns a promise, and generates a thunk that dispatches pending/fulfilled/rejected action types based on that promise.createSlice(): accepts an object of reducer functions, a slice name, and an initial state value, and automatically generates a slice reducer with corresponding action creators and action types.The function itself has toString() defined, so that it can be used in place of the type constant. createAction(): generates an action creator function for the given action type string.In addition, it automatically uses the immer library to let you write simpler immutable updates with normal mutative code, like = true. createReducer(): that lets you supply a lookup table of action types to case reducer functions, rather than writing switch statements.It can automatically combine your slice reducers, adds whatever Redux middleware you supply, includes redux-thunk by default, and enables use of the Redux DevTools Extension. configureStore(): wraps createStore to provide simplified configuration options and good defaults.Overall, whether you're a brand new Redux user setting up your first project, or an experienced user who wants to simplify an existing application, using Redux Toolkit will make your code better and more maintainable. However, we strongly recommend using Redux Toolkit for all Redux apps. There are many existing applications that use other Redux wrapper libraries, or write all Redux logic "by hand", and if you still prefer to use a different approach, go ahead! Note that you are not required to use Redux Toolkit to use Redux. It can be added at the start of a new project, or used as part of an incremental migration in an existing project. Redux Toolkit is beneficial to all Redux users regardless of skill level or experience. Redux Toolkit makes it easier to write good Redux applications and speeds up development, by baking in our recommended best practices, providing good default behaviors, catching mistakes, and allowing you to write simpler code. We can't solve every use case, but in the spirit of create-react-app and apollo-boost, we can provide an official recommended set of tools that handle the most common use cases and reduce the need to make extra decisions. "Redux requires too much boilerplate code"."I have to add a lot of packages to get Redux to do anything useful"."Configuring a Redux store is too complicated".Redux Toolkit was originally created to help address three common concerns about Redux: Or, maybe you're writing a larger application and finding yourself writing some similar code, and you'd like to cut down on how much of that code you have to write by hand. Sometimes we just want the simplest possible way to get started, with some good default behavior out of the box. This is good in some cases, because it gives you flexibility, but that flexibility isn't always needed. It lets you decide how you want to handle everything, like store setup, what your state contains, and how you want to build your reducers. User timings can be delivered to Google Analytics, or to a custom collection endpoint using ndBeacon().īeing a successful performance-minded developer requires great focus and knowledge.The Redux core library is deliberately unopinionated. This API is currently under development and. Here's a few examples that you may want to consider adding to your projects:Īll major browsers support the User Timing API, so it makes sense to add instrumentation to critial user-actions and flows to gain a deeper insight into the experiences people are having on your pages. Recoil has functionality to allow you to observe and update state changes. You can use custom User-Timing events to instrument your sites and applications. When in development mode, React publishes component runtime metrics to the User Timing API, which is why it’s visible in devtools without any additional browser extensions. ![]() Quickly identify which third party scripts attributed to main thread long tasks Can I export these metrics or add my own?
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