TS
TypeScript 온라인

09155-hard-validdate
Hard

챌린지 출처: type-challenges/09155-hard-validdate

Implement a type ValidDate, which takes an input type T and returns whether T is a valid date.

Leap year is not considered

Good Luck!

ValidDate<'0102'> // true
ValidDate<'0131'> // true
ValidDate<'1231'> // true
ValidDate<'0229'> // false
ValidDate<'0100'> // false
ValidDate<'0132'> // false
ValidDate<'1301'> // false

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테스트 케이스 출처: type-challenges/09155-hard-validdate/test-cases.ts
import type { Equal, Expect } from '@type-challenges/utils'

type cases = [
  Expect<Equal<ValidDate<'0102'>, true>>,
  Expect<Equal<ValidDate<'0131'>, true>>,
  Expect<Equal<ValidDate<'1231'>, true>>,
  Expect<Equal<ValidDate<'0229'>, false>>,
  Expect<Equal<ValidDate<'0100'>, false>>,
  Expect<Equal<ValidDate<'0132'>, false>>,
  Expect<Equal<ValidDate<'1301'>, false>>,
  Expect<Equal<ValidDate<'0123'>, true>>,
  Expect<Equal<ValidDate<'0430'>, true>>,
  Expect<Equal<ValidDate<'01234'>, false>>,
  Expect<Equal<ValidDate<''>, false>>,
]