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27958-medium-checkrepeatedtuple
Medium

挑战来源: type-challenges/27958-medium-checkrepeatedtuple

判断一个元组类型中是否有相同的成员

For example:

type CheckRepeatedTuple<[1, 2, 3]>   // false
type CheckRepeatedTuple<[1, 2, 1]>   // true

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测试用例来源: type-challenges/27958-medium-checkrepeatedtuple/test-cases.ts
import type { Equal, Expect } from '@type-challenges/utils'

type cases = [
  Expect<Equal<CheckRepeatedTuple<[number, number, string, boolean]>, true>>,
  Expect<Equal<CheckRepeatedTuple<[number, string]>, false>>,
  Expect<Equal<CheckRepeatedTuple<[1, 2, 3]>, false>>,
  Expect<Equal<CheckRepeatedTuple<[1, 2, 1]>, true>>,
  Expect<Equal<CheckRepeatedTuple<[]>, false>>,
  Expect<Equal<CheckRepeatedTuple<string[]>, false>>,
  Expect<Equal<CheckRepeatedTuple<[number, 1, string, '1', boolean, true, false, unknown, any]>, false>>,
  Expect<Equal<CheckRepeatedTuple<[never, any, never]>, true>>,
]