React Activation

Overview:

The React Activation library provides a way to implement the <keep-alive /> functionality seen in Vue for React applications. It also mentions official support for <Offsreen /> in React 18.x, offering a more stable <KeepAlive /> function with babel pre-compilation. Additionally, it is compatible with React v16/v17/v18 and Preact v10+.

Features:

Implement <keep-alive /> functionality in React
Compatible with React v16/v17/v18 and Preact v10+
More stable <KeepAlive /> function with babel pre-compilation
Cache Control for managing cache manually
Supports lifecycle methods for both ClassComponent and FunctionComponent
Online Demo and more examples available
Closable tabs with react-router and umi

Installation:

To install the React Activation library, follow these steps:

(Optional but recommended) Add react-activation/babel plugins in .babelrc file.
```
"plugins": ["react-activation/babel"]
```
This plugin adds a _nk attribute to each JSX element during compilation to help generate a unique identifier for the <KeepAlive> component.
Wrap the components that need to keep states with <KeepAlive>, such as:
```
<KeepAlive>
    <Counter />
</KeepAlive>
```
Place the <AliveScope> component at a location that will not be unmounted, usually at the application entrance.

Summary:

The React Activation library provides a way to implement Vue’s <keep-alive /> functionality in React applications. It also offers more stable <KeepAlive /> function with babel pre-compilation and compatibility with React v16/v17/v18 and Preact v10+. With features like cache control, lifecycle methods support, and examples for easy understanding, React Activation aims to enhance state management and performance optimization in React applications.