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提出詳細

type BlankChar = ' ' | '\n' | '\t'
type TrimLeft<S extends String> = S extends `${BlankChar}${infer Rest}` ? TrimLeft<Rest> : S;
type TrimRight<S extends String> = S extends `${infer Rest}${BlankChar}` ? TrimRight<Rest> : S;
type Trim<S extends string> = TrimRight<TrimLeft<S>>
提出日時2023-08-10 09:48:07
問題Trim
ユーザーtekihei2317
ステータスAccepted
テストケース
import type { Equal, Expect } from '@type-challenges/utils'

type cases = [
  Expect<Equal<Trim<'str'>, 'str'>>,
  Expect<Equal<Trim<' str'>, 'str'>>,
  Expect<Equal<Trim<'     str'>, 'str'>>,
  Expect<Equal<Trim<'str   '>, 'str'>>,
  Expect<Equal<Trim<'     str     '>, 'str'>>,
  Expect<Equal<Trim<'   \n\t foo bar \t'>, 'foo bar'>>,
  Expect<Equal<Trim<''>, ''>>,
  Expect<Equal<Trim<' \n\t '>, ''>>,
]