Find the elements in the target array that appear only once. For example:input: [1,2,2,3,3,4,5,6,6,6],ouput: [1,4,5].
import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<FindEles<[1, 2, 2, 3, 3, 4, 5, 6, 6, 6]>, [1, 4, 5]>>,
Expect<Equal<FindEles<[2, 2, 3, 3, 6, 6, 6]>, []>>,
Expect<Equal<FindEles<[1, 2, 3]>, [1, 2, 3]>>,
Expect<Equal<FindEles<[1, 2, number]>, [1, 2, number]>>,
Expect<Equal<FindEles<[1, 2, number, number]>, [1, 2]>>,
]