type Year = `${19 | 20}${Digit}${Digit}`;
type Month = '01' | '02' | '03' | '04' | '05' | '06' | '07' | '08' | '09' | '10' | '11' | '12';
type Day =
         '01' | '02' | '03' | '04' | '05' | '06' | '07' | '08' | '09' |
  '10' | '11' | '12' | '13' | '14' | '15' | '16' | '17' | '18' | '19' |
  '20' | '21' | '22' | '23' | '24' | '25' | '26' | '27' | '28' | '29' |
  '30' | '31';
type Date = `${Year}-${Month}-${Day}`;

export default Date;