@sbh321/qcalendar/src/composables/useCheckChange.js

A forked version of Jeff Galbraith's fork of Quasar UI QCalendar

export const useCheckChangeEmits = ['change']

export default function (emit, { days, lastStart, lastEnd }) {
  function checkChange() {
    if (days.value && days.value.length > 0) {
      const start = days.value[ 0 ].date
      const end = days.value[ days.value.length - 1 ].date
      // Check if there is a change in the selected days
      if (lastStart.value === null || lastEnd.value === null || start !== lastStart.value || end !== lastEnd.value) {
        // Update lastStart and lastEnd, and emit the 'change' event
        lastStart.value = start
        lastEnd.value = end
        emit('change', { start, end, days: days.value })
        return true
      }
    }
    return false
  }

  return {
    checkChange,
  }
}