Avoid use of parentheses where not required by syntax or semantics.

The following code snippet illustrates this rule :

function sayHello() {
  var a = typeof (37); // Non-Compliant
  var b = typeof 38;

  var c = {};
  c.a = a;
  c.b = b;
  delete (a); // Non-Compliant
  delete b;

  void 0;
  void (1); // Non-Compliant
}