hooks are just
state with manners.

closures, rules of hooks, and why your setState feels delayed — the commit history of function components growing a brain.

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usestate.tscommit a3f9c21

12class Counter extends React.Component {

13- this.state = { count: 0 }

14- this.setState({ count: count + 1 })

13+ const [count, setCount] = useState(0)

14+ setCount(count + 1)

15}

why: class state meant logic glued to a lifecycle you didn't pick. hooks let state live in a function — reusable without a HOCs museum.

hooks commits

1 dissected

#f8c2a19hooks

useSyncExternalStore — when the store lives outside React

concurrent rendering landed, the external store flipped mid-render, and the UI tore. this hook is the bridge Redux and Zustand already use under the hood — here's why it had to exist.

+ useSyncExternalStore, getServerSnapshot- useEffect subscribe hacks, torn UI

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hooks are juststate with manners.

hooks commits

useSyncExternalStore — when the store lives outside React

hooks are just
state with manners.