NodeJS : FCM Parsing error: Identifier 'functions' has already been declared

NodeJS : FCM Parsing error: Identifier 'functions' has already been declared
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 this video is playing.
Then, type the letters 'awesome' on the keyboard.
Your YouTube progress indicator will turn into a shimmering rainbow.

A short overview of who I am,
Hello, I am Delphi.
I am willing to help you find the solutions to your questions.
NodeJS : FCM Parsing error: Identifier 'functions' has already been declared
I am always open to chatting or receiving comments from you if you have more specific queries.
If you have an answer, or any insights to the answer, please comment below.
I will express my appreciation for your answer by 'hearting' it.
Parsing FCM error: : 'functions' been NodeJS already declared has Identifier