type-challenges-judge

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KebabCase

提出詳細

type KebabCaseInner<S extends string> = S extends `${infer S1}${infer S2}`
  ? S1 extends Lowercase<S1>
    // 大文字でない場合
    ? `${S1}${KebabCaseInner<S2>}`
    // 大文字の場合
    : `-${Lowercase<S1>}${KebabCaseInner<S2>}`
  : '';

type KebabCase<S extends String> = S extends `${infer S1}${infer S2}`
  ? `${Lowercase<S1>}${KebabCaseInner<S2>}`
  : S;

提出日時	2023-08-11 12:59:15
問題	KebabCase
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<KebabCase<'FooBarBaz'>, 'foo-bar-baz'>>,
  Expect<Equal<KebabCase<'fooBarBaz'>, 'foo-bar-baz'>>,
  Expect<Equal<KebabCase<'foo-bar'>, 'foo-bar'>>,
  Expect<Equal<KebabCase<'foo_bar'>, 'foo_bar'>>,
  Expect<Equal<KebabCase<'Foo-Bar'>, 'foo--bar'>>,
  Expect<Equal<KebabCase<'ABC'>, 'a-b-c'>>,
  Expect<Equal<KebabCase<'-'>, '-'>>,
  Expect<Equal<KebabCase<''>, ''>>,
  Expect<Equal<KebabCase<'😎'>, '😎'>>,
]