code: function TransactionDate (dateString, format, options) {
    options = options || {}
    var parsed = parseDate(dateString, format)
  
    this.year = parsed.year
    this.month = parsed.month
    this.date = parsed.date
  
    if (!this.year && options.succeedingDate) {
      this.year = this.calculateYear(options.succeedingDate)
    }
  }
docs: Represents a transaction date
  @constructor
  @private