wtf is react-use?

React-use is a toolkit that gives React developers pre-built shortcuts for common tasks. Think of it like a Swiss Army knife for React, instead of writing the same code over and over, you install this library and get ready-made utilities that handle repetitive work. If you're building a web app and need to track whether the user moved their mouse, check their internet connection, play audio, or animate something smoothly, this library gives you a simple function call to do it. The library is built around React Hooks, which is React's modern way of adding logic to components. A Hook is just a small, reusable function you call inside your component to give it a specific ability. For example, useToggle lets you track whether something is on or off, while useWindowSize automatically tells you the current width and height of the browser window. These hooks handle all the behind-the-scenes plumbing, listening for changes, updating your component when needed, and cleaning up after themselves. The toolkit includes about 30 hooks organized into categories. The "Sensors" group tracks physical properties (like battery level, location, or device motion). The "UI" group handles audio and speech. "State" hooks manage data that changes over time, like counters or lists. "Animations" hooks help smooth transitions and timed effects. A developer building a fitness app, for instance, might grab useMotion to access the phone's accelerometer and useBattery to warn users when the device runs low. Someone building a responsive dashboard could use useWindowSize and useMedia to adjust layouts as the browser resizes. You install it with a single npm command and then import only the hooks you need. The code is written in TypeScript and released as public domain, so there are no licensing restrictions. The project is essentially a modernized port of an older library, bringing all those utilities into React's current Hooks approach.