My goal is to transform the following code snippet:
type UnionType = Variant1 | Variant2
into the desired format below:
type ResultingType = [UnionType, UnionType]
In case the union comprises 3 member types, the tuple should contain 3 elements accordingly.
Are you referring to the concept of "permutation"?
type UnionType = 'a' | 'b'
type UnionPermutation<U, K = U> =
[U] extends [never]
? []
: U extends any
? [U, ...UnionPermutation<Exclude<K, U>>]
: never
// Example: ['a', 'b'] | ['b', 'a']
type test = UnionPermutation<UnionType>
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