Build a Countdown

In this lab, you will build a `countdown` function that takes a starting number and generates a countdown list. When you call `countdown(n)`, it should return an array that starts at `n` and counts down by `1` until it reaches `1`. For example: - `countdown(5)` should return `[5, 4, 3, 2, 1]` - `countdown(1)` should return `[1]` If the starting number is less than `1`, there is nothing to countdown, so return an empty array: - `countdown(0)` should return `[]` - `countdown(-3)` should return `[]` To complete the lab, you must build the result using recursion and you must not use loops (`for`, `while`), `Array.from()`, or array-iteration methods (`forEach`, `map`, `filter`, `reduce`). Each call should produce its own result array (don't use globals to store the countdown). **Objective:** Fulfill the user stories below and get all the tests to pass to complete the lab. **User Stories:** 1. You should create a function named `countdown`. 2. The `countdown` function should take a single argument `n` (a number). 3. If `n` is less than `1`, `countdown` should return an empty array. 4. Otherwise, `countdown` should return an array containing the integers from `n` down to `1` in descending order. 5. You must use recursion (the function should call itself) and must not use loops of any kind (`for`, `while`, `Array.from()`, or higher-order methods like `forEach`, `map`, `filter`, `reduce`). 6. Each recursive call should use a smaller value than the previous call (for example, `n - 1`) so the function reaches its base case. 7. The solution should not use global variables to store or cache the result array. 8. Calling `countdown` multiple times with different inputs should always return the correct, independent result.