data_events.js

    getEventsForAttendee: (attendeeId) => {
        if (attendeeId === undefined) return Promise.reject("No attendee id provided");

        let clone = JSON.parse(JSON.stringify(eventList));
        return Promise.resolve(clone.filter(x => x.attendees.indexOf(attendeeId) >= 0));
    },
    getEventsForLocation: (locationId) => {
        if (locationId === undefined) return Promise.reject("No location id provided");

        let clone = JSON.parse(JSON.stringify(eventList));
        return Promise.resolve(clone.filter(x => x.location == locationId));
    },