I

background.js

 chrome.contextMenus.onClicked.addListener(async (info) => {
    if (info.menuItemId === "createCalendarEvent") {
        const selectedText = info.selectionText;
        try {
            const event = await parseEventDetails(selectedText);
            const startTime = new Date(event.start_time);
            const endTime = new Date(event.end_time);

            event.dates = `${format(startTime)}/${format(endTime)};`;

            const googleCalendarUrl = createGoogleCalendarUrl(event);
            chrome.tabs.create({ url: googleCalendarUrl.toString() });
        } catch (e) {
            console.log(e);
        }
    }
});