props/Props/assets/js/services/persistence.js

const prefix = "Props";
function put(key, value) {
    if (value == null) return false;
    try {
        localStorage.setItem(prefix + ":" + key, JSON.stringify(value));
    } catch (error) {
        console.error(error);
        return false;
    }
    return true;
}

function get(key) {
    if (!exists(key)) return null;
    try {
        return JSON.parse(localStorage.getItem(prefix + ":" + key));
    } catch (error) {
        console.error(error);
        return null;
    }
}

function remove(key) {
    localStorage.removeItem(prefix + ":" + key);
}

function exists(key) {
    return localStorage.getItem(prefix + ":" + key) != null;
}

export { put, get, remove, exists };