Date-based calendar formatter for momentjs

moment-calendar_title.js.coffee

# Adapted from the momentjs calendar function
# Inspired by this answer: http://stackoverflow.com/a/10306813/325676

moment.fn.calendarTitle = ->
  calendar = 
    sameDay : '[Today]',
    nextDay : '[Tomorrow]',
    nextWeek : 'dddd, Do MMM',
    lastDay : '[Yesterday]',
    lastWeek : '[Last] dddd',
    sameElse : 'dddd, Do MMM'

  diff = this.diff(moment().sod(), 'days', true)
  format =  if diff < -6 then calendar.sameElse else \
            if diff < -1 then calendar.lastWeek else \
            if diff < 0  then calendar.lastDay  else \
            if diff < 1  then calendar.sameDay  else \
            if diff < 2  then calendar.nextDay  else \
            if diff < 7  then calendar.nextWeek else \
            calendar.sameElse

  this.format(format)