Last of Array

TypeScript 4.0 is recommended in this challenge 📚

In this medium-level challenge, you'll > typescript 4.0 is recommended in this challenge. Learn array type operations in this medium-level challenge on TypeScriptPro.

You'll learn about array type operations, essential skills for advanced TypeScript development and type-level programming.

For this challenge, you will need to change the following code to make the tests pass (no type check errors).

type arr1 = ['a', 'b', 'c']
type arr2 = [3, 2, 1]
 
type tail1 = Last<arr1> // expected to be 'c'
type tail2 = Last<arr2> // expected to be 1

Detailed Explanation

This challenge requires understanding of array type operations.

The solution involves carefully constructing types that satisfy all test cases while handling edge cases properly.

This challenge helps you understand array type operations and how to apply this concept in real-world scenarios.