Hide "User is typing..." in WhatsApp In WhatsApp Group chat, when other person is typing when I am actively looking at the group conversation chat, I could see who is typing at the other end.

That conversely also means, when I am typing in a group chat, other people too can see me typing.

I checked the FAQ Section of WhatsApp. Could not found any settings mentioned for this. 

Is there a way to disable showing "Me typing..." to other people in a group chat when I am typing? Wanted to surprise them by my post directly :)
You could try a modded version of WhatsApp, there are many of them nowadays and are constantly being updated too.
I have tried a few for research purposes only and Gb WhatsApp seems to have a bunch of extra options with the ability to block features like:

typing status,

online status,

and blue ticks to mention a few...
Take a look here: WhatsApp modded versions for more information.