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Trim Left

提出詳細

type WhiteSpace = " " | "\n" | "\t"
type TrimLeft<S extends string> =
  S extends `${infer First}${infer Rest}`
  ? (First extends WhiteSpace ? TrimLeft<Rest> : S)
  : S
提出日時2023-09-13 14:07:44
問題Trim Left
ユーザーsankantsu
ステータスAccepted
テストケース
import type { Equal, Expect } from '@type-challenges/utils'

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