week-view.component.ts

      const events = group.events;
      const aggregatedRanges = [ new AggregatedRange(events[0]) ];

      for (let i = 1; i < events.length; i++) {
        const range = aggregatedRanges[aggregatedRanges.length -1];
        const event = events[i];

        if (event.data.start < range.end) {
          range.events.push(event);

          if (event.data.end > range.end) {
            range.end = event.data.end;
          }
        } else {
          aggregatedRanges.push(new AggregatedRange(event));
        }
      }