I just invented a new JavaScript operator. It's named "plus with wings", and it's used to sum to numbers without ambiguity or any need of type conversion, for example:

3 -+- "2" // 5

"2.1" -+- "4" // 6.1

"-1.1" -+- "" // -1.1

So, from now, you won't have to wonder anymore what type is that variable.

Tested on all browsers