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freesewing/packages/freesewing.shared/hooks/useLocalStorage.js
2022-06-06 13:12:34 -05:00

31 lines
905 B
JavaScript

import { useState, useEffect } from 'react'
// See: https://usehooks.com/useLocalStorage/
function useLocalStorage(key, initialValue) {
const prefix = 'fs_'
const [storedValue, setStoredValue] = useState(initialValue);
const [ready, setReady] = useState(false);
const setValue = (value) => {
if (typeof window === 'undefined') return null // SSR has no window object
try {
const valueToStore = value instanceof Function ? value(storedValue) : value
setStoredValue(valueToStore)
window.localStorage.setItem(prefix + key, JSON.stringify(valueToStore))
} catch (error) {
console.log(error)
}
}
useEffect(() => {
const item = window.localStorage.getItem(prefix + key)
if (item) {
setValue(item ? JSON.parse(item) : initialValue);
}
setReady(true);
}, [])
return [storedValue, setValue, ready]
}
export default useLocalStorage