in src/granularity/granularityBase.ts [212:237]
public addDate(date: Date): void {
const datePeriods: ITimelineDatePeriod[] = this.getDatePeriods();
const lastDatePeriod: ITimelineDatePeriod = datePeriods[datePeriods.length - 1];
const identifierArray: (string | number)[] = this.splitDate(date);
if (datePeriods.length === 0
|| !Utils.IS_ARRAYS_EQUAL(lastDatePeriod.identifierArray, identifierArray)) {
if (datePeriods.length > 0) {
lastDatePeriod.endDate = date;
}
datePeriods.push({
endDate: date,
fraction: GranularityBase.DefaultFraction,
identifierArray,
index: datePeriods.length,
startDate: date,
week: this.calendar.determineWeek(date),
year: this.calendar.determineYear(date),
});
}
else {
lastDatePeriod.endDate = date;
}
}