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recoil

Recoil - A state management library for React

  • 0.4.1
  • Source
  • npm
  • Socket score

Version published
Maintainers
3
Created

What is recoil?

Recoil is a state management library for React applications. It provides a way to manage and share state across components with a minimal API and a focus on performance and scalability.

What are recoil's main functionalities?

Atoms

Atoms are units of state in Recoil. They can be read from and written to from any component. Components that read the value of an atom will re-render when the atom's value changes.

const { atom } = require('recoil');

const textState = atom({
  key: 'textState',
  default: '',
});

Selectors

Selectors are pure functions that transform state. They can compute derived state based on atoms or other selectors. Components that read the value of a selector will re-render when the selector's value changes.

const { selector } = require('recoil');

const charCountState = selector({
  key: 'charCountState',
  get: ({ get }) => {
    const text = get(textState);
    return text.length;
  },
});

RecoilRoot

RecoilRoot is a component that provides the Recoil state context to its descendants. It must wrap the part of your application that uses Recoil state.

const { RecoilRoot } = require('recoil');
const React = require('react');
const ReactDOM = require('react-dom');

function App() {
  return (
    <RecoilRoot>
      <MyComponent />
    </RecoilRoot>
  );
}

ReactDOM.render(<App />, document.getElementById('root'));

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Package last updated on 26 Aug 2021

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