react-transition-group VS DefinitelyTyped

The two most popular choices now (circa Jan 2024) are React Transition Group, started in 2016, and Framer Motion, started in 2018. I'm not too familiar with the former, so this article solely dives into the workings of AnimatePresence from Framer Motion and how it's able to enable exit animations.

We use the React Transition Group CSSTransition. I think you could also use Framer Motion, but I've never really tested this.

With transitions that come out of the box with React do you mean React-Transition-Group ?

I don't have an answer to your specific question but I do have a recommendation that might help. Take a look at https://reactcommunity.org/react-transition-group/. It's very popular and used by MUI in their animated components. Even if you don't install it, looking at their docs and source code might help you get a better idea of how to do what you want.

Oh, but not React; React wants you to suffer! (unless you use a library like react-transition-group, of course.

React-transition-group

There are a bunch of animation libraries to overcome this difficulty. The most famous is probably React Transition Group. There are also Framer Motion, React Spring, and Transition Hook.

AutoAnimate makes for a smooth experience when an element changes in the DOM. I would like to compare AutoAnimate with React Transition Group, which is a simple transition library for component entering and exiting, but with some additional configurations.

Some React animations libraries, like react-transition-group and transition-hook, animate elements with manually configured CSS transitions. Framer Motion takes a different approach, by animating elements under the hood with preconfigured styles.

React Transition Group offers a straightforward approach to animations and transitions by providing its in-built components such as TransitionGroup for defining animations.

Prior to React 18, it used to include an implicit children prop, making it suitable for components expected to have children. For a long time, though, the implicit children prop type has been removed according to React 18's type changes.

Additionally, because TypeScript has a well established and widely used install-base, there are already many different definition files in the wild for supporting non-TypeScript supporting projects. One of the more extensive collections of these typings lives at the DefinitelyTyped repository, which publishes the package's community typings under the package names @types/your-package-name (where your-package-name is the name of the project you're looking for typings of) that you can look for on your package manager.

View on GitHub

Firefox maintain a library for unified extension API https://github.com/mozilla/webextension-polyfill

Their type definition for HAR request isn't exported https://github.com/DefinitelyTyped/DefinitelyTyped/blob/mast...

type NumberOrString = number | string; type Status = "idle" | "loading" | "success" | "failure" // React useState, can receive a value or a function as parameter to serve as initial value. // https://github.com/DefinitelyTyped/DefinitelyTyped/blob/a03856975a17eba524739676affbf70ac4078176/types/react/v17/index.d.ts#L920 function useState(initialState: S | (() => S)): [S, Dispatch>];

The TypeScript pull request was merged, so Sebastian (who helps maintain the React type definitions) exercised new powers in this pull request to the DefinitelyTyped repository for the React type definitions. At the time of writing, this pull request is still open, but once merged and shipped the React community we will feel its benefits.

there is an open issue: https://github.com/DefinitelyTyped/DefinitelyTyped/issues/61616

Relatively infrequently. Normally, if an npm package is popular and doesn’t have its own types, there will be a community provided types declaration file available from https://github.com/DefinitelyTyped/DefinitelyTyped