Why can't the increment increment operator (++) be used for IIFE?

I am learning javascript and am amazed at the syntax IIFE

.

I realized that to write, IIFE

we need to make the function as an expression and then call it.

We can do this as an expression by wrapping a function between ()

. Or the prefix of the key functions of speech by using +

, -

, ~

, !

.

Now for the problem, when I prefix with ++

, I get an error in the console.

Code:

++function(){console.log("hello")}();

      

        
        
        
      

    

Mistake:

Uncaught ReferenceError: Invalid left-hand side expression in prefix operation

      

        
        
        
      

    

Why can't I use ++

? ++

is a unary operator, and I thought it would make the interpreter think of an anonymous function as a function expression, like +

, -

etc., did.

Where am I going wrong?