AI solution for TypeScript puzzle on BFE.dev
26. implement ReverseTuple<T>

Solution:

type ReverseTuple<T extends any[]> = T extends [infer H, ...infer R] ? [...ReverseTuple<R>, H] : [];

Explanation:

• T extends any[] ensures that T is a tuple type
• T extends [infer H, ...infer R] deconstructs the tuple into its first element H and the remaining elements R
• infer allows the type inference of H and R
• infer R results in a tuple type for R
• ? starts the ternary operator
• ...ReverseTuple<R> recursively calls ReverseTuple on R and spreads the reversed tuple
• , H appends the first element H to the end
• : [] returns an empty array if T is an empty tuple.