import twitterHelper from "../../assets/javascripts/helpers/twitter.js"; let removeTwitterSWElement = document.getElementById("remove-twitter-sw"); let disableTwitterElement = document.getElementById("disable-nitter"); twitterHelper.init().then(() => { disableTwitterElement.checked = !twitterHelper.getDisableTwitter(); removeTwitterSWElement.checked = !remove.getRemoveTwitterSW; // Problem }); disableTwitterElement.addEventListener("change", (event) => twitterHelper.setDisableTwitter(!event.target.checked) ); removeTwitterSWElement.addEventListener("change", (event) => { browser.storage.sync.set({ removeTwitterSW: !event.target.checked }); // Problem });