Explain the output

Question

console.log(typeof(+"1"))

First, what is + doing there alone??? Isn't it a syntax error?
Second, the output....

Answer 1

~ swim ~ + acting like addition ?

Answer 2

~ swim ~ yeah .. that's what I thought ...
Um.. what are unary things?

Answer 3

~ swim ~ oh... 🤣🤣🤣🤣🤣
Such a simple thing...
Thanks for explaining