Method periodLabel

src/dev-app/datepicker/datepicker-demo.ts:124–128

()

  }

  get periodLabel() {
    return this._dateAdapter
      .format(this._calendar.activeDate, this._dateFormats.display.monthYearLabel)
      .toLocaleUpperCase();
  }

  previousClicked(mode: 'month' | 'year') {
    this._calendar.activeDate =