How can I use Recoil with TypeScript in my React project?

How can I use Recoil with TypeScript in my React project?

To use Recoil with TypeScript, first install Recoil and then set up your atoms and selectors with type annotations.

Can you show me an example of creating an atom?

Sure! Here's a simple example:

import { atom } from 'recoil';

export const exampleAtom = atom<string>({
  key: 'exampleAtom', // unique ID (with respect to other atoms/selectors)
  default: '', // default value (aka initial value)
});

What about selectors? How do I create one?

You can create a selector like this:

import { selector } from 'recoil';
import { exampleAtom } from './exampleAtom';

export const exampleSelector = selector({
  key: 'exampleSelector',
  get: ({ get }) => {
    const exampleValue = get(exampleAtom);
    return exampleValue.length;
  },
});

How do I use these in a component?

In your component, use the useRecoilState hook for atoms and useRecoilValue for selectors. Here's an example:

import { useRecoilState } from 'recoil';
import { exampleAtom } from './exampleAtom';

const ExampleComponent = () => {
  const [value, setValue] = useRecoilState(exampleAtom);
  return <input value={value} onChange={(e) => setValue(e.target.value)} />;
};