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33
src/hooks/useLocalStorage.js
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33
src/hooks/useLocalStorage.js
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import { useState, useEffect } from 'react';
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// ----------------------------------------------------------------------
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export default function useLocalStorage(key, defaultValue) {
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const [value, setValue] = useState(() => {
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const storedValue = typeof window !== 'undefined' ? localStorage.getItem(key) : null;
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return storedValue === null ? defaultValue : JSON.parse(storedValue);
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});
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useEffect(() => {
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const listener = (e) => {
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if (typeof window !== 'undefined' && e.storageArea === localStorage && e.key === key) {
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setValue(e.newValue ? JSON.parse(e.newValue) : e.newValue);
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}
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};
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window.addEventListener('storage', listener);
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return () => {
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window.removeEventListener('storage', listener);
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};
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}, [key, defaultValue]);
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const setValueInLocalStorage = (newValue) => {
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setValue((currentValue) => {
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const result = typeof newValue === 'function' ? newValue(currentValue) : newValue;
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if (typeof window !== 'undefined') localStorage.setItem(key, JSON.stringify(result));
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return result;
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});
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};
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return [value, setValueInLocalStorage];
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}
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