Using store outside React

Jotai's state resides in React, but sometimes it would be nice to interact with the world outside React.

createStore

createStore provides a store interface that can be used to store your atoms. Using the store, you can access and mutate the state of your stored atoms from outside React.

import { atom, useAtomValue, createStore, Provider } from "jotai";

const timeAtom = atom(0);
const store = createStore();

store.set(timeAtom, (prev) => prev + 1); // Update atom's value
store.get(timeAtom) // Read atom's value

function Component() {
  const time = useAtomValue(timeAtom) // Inside React
  return (
    <div className="App">
      <h1>{time}</h1>
    </div>
  );
}

export default function App() {
  return (
    <Provider store={store}>
      <Component />
    </Provider>
  );
}

Examples