adminjs
Version:
Admin panel for apps written in node.js
48 lines (47 loc) • 1.63 kB
JavaScript
/* eslint-disable no-console */
import { useState } from 'react';
/**
* @load ./use-local-storage.doc.md
* @subcategory Hooks
* @class
* @see https://usehooks.com/useLocalStorage
*
* @param {string} key key under which hook will store the data
* @param {T} initialValue value which will be stringified and stored
* @return {UseLocalStorageResult<T>}
* @bundle
* @type {Function}
*/
export function useLocalStorage(key, initialValue) {
// State to store our value
// Pass initial state function to useState so logic is only executed once
const [storedValue, setStoredValue] = useState(() => {
try {
// Get from local storage by key
const item = window.localStorage.getItem(key);
// Parse stored json or if none return initialValue
return item ? JSON.parse(item) : initialValue;
} catch (error) {
// If error also return initialValue
console.log(error);
return initialValue;
}
});
// Return a wrapped version of useState's setter function that ...
// ... persists the new value to localStorage.
const setValue = value => {
try {
// Allow value to be a function so we have same API as useState
const valueToStore = value instanceof Function ? value(storedValue) : value;
// Save state
setStoredValue(valueToStore);
// Save to local storage
window.localStorage.setItem(key, JSON.stringify(valueToStore));
} catch (error) {
// A more advanced implementation would handle the error case
console.log(error);
}
};
return [storedValue, setValue];
}
export default useLocalStorage;