ente/packages/shared/hooks/useLocalState.tsx
2023-11-09 09:40:43 +05:30

25 lines
624 B
TypeScript

import { Dispatch, SetStateAction, useEffect, useState } from 'react';
import { getData, LS_KEYS, setData } from '@ente/shared/storage/localStorage';
export function useLocalState<T>(
key: LS_KEYS,
initialValue?: T
): [T, Dispatch<SetStateAction<T>>] {
const [value, setValue] = useState<T>(initialValue);
useEffect(() => {
const { value } = getData(key) ?? {};
if (value) {
setValue(value);
}
}, []);
useEffect(() => {
if (typeof value !== 'undefined') {
setData(key, { value });
}
}, [value]);
return [value, setValue];
}