Type Challenges Judge

Problems

Progress

Ranking

CamelCase

提出詳細

type CamelCaseImpl<S extends string> =
  S extends `${infer S1}_${infer S2}`
  ? Capitalize<S2> extends S2
    ? `${S1}_${CamelCaseImpl<S2>}`
    : `${S1}${CamelCaseImpl<Capitalize<S2>>}`
  : S
type CamelCase<S extends string> =
  CamelCaseImpl<Lowercase<S>>
提出日時2023-09-20 02:45:51
問題CamelCase
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<CamelCase<'foobar'>, 'foobar'>>,
  Expect<Equal<CamelCase<'FOOBAR'>, 'foobar'>>,
  Expect<Equal<CamelCase<'foo_bar'>, 'fooBar'>>,
  Expect<Equal<CamelCase<'foo_bar_hello_world'>, 'fooBarHelloWorld'>>,
  Expect<Equal<CamelCase<'HELLO_WORLD_WITH_TYPES'>, 'helloWorldWithTypes'>>,
  Expect<Equal<CamelCase<'-'>, '-'>>,
  Expect<Equal<CamelCase<''>, ''>>,
  Expect<Equal<CamelCase<'😎'>, '😎'>>,
]