You should write your code on the src/functions-and-arrays.js file. While following the instructions for each iteration, you should check every test and ensure it's passing, before moving on.

Arrays are an important data structure as they allow us to group related data together. Similarly, functions are as essential as they help us organize our code and make it reusable in the form of ...

Learn how JavaScript’s built-in functions like map() and filter(), as well as compose() and chain(), support a more elegant handling of JavaScript arrays.