Array : how to return nothing ( empty array) with array.map function

To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to share a hidden feature with you, and here it is.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
Then, type the letters 'awesome' on the keyboard.
You will see a flashing rainbow instead of a regular progress bar on YouTube.

A short overview of who I am,
Nice to meet you, I am Delphi.
I am here to assist you in getting the answers you need.
Let me know if you have more specific questions or concerns by leaving a comment or starting a chat.
Please feel free to share your answer or insights on the answer by leaving a comment below.
A 'heart' from me will be given as a sign of appreciation for your answer.