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38 lines
1.3 KiB
TypeScript

import { useState, useCallback } from 'react'
export function useLocalStorage<T>(key: string, initialValue: T) {
// Initialize state with a function to avoid unnecessary localStorage access during SSR
const [storedValue, setStoredValue] = useState<T>(() => {
if (typeof window === 'undefined') {
return initialValue
}
try {
const item = window.localStorage.getItem(key)
return item ? (typeof initialValue === 'string' ? item as T : JSON.parse(item)) : initialValue
} catch (error) {
console.error(`Error reading localStorage key "${key}":`, error)
return initialValue
}
})
// Memoize the setValue function to prevent unnecessary re-renders
const setValue = useCallback((value: T | ((val: T) => T)) => {
try {
const valueToStore = value instanceof Function ? value(storedValue) : value
setStoredValue(valueToStore)
if (typeof window !== 'undefined') {
if (typeof valueToStore === 'string') {
window.localStorage.setItem(key, valueToStore)
} else {
window.localStorage.setItem(key, JSON.stringify(valueToStore))
}
}
} catch (error) {
console.error(`Error setting localStorage key "${key}":`, error)
}
}, [key, storedValue])
return [storedValue, setValue] as const
}