Faster null check with integer inputs

With integer inputs, checking for null or zero value faster.

// commonly used approach
if(x != 0) { 
  // ...
} 

// faster approach using omit operation
if(x) {
  // 0 is False
  // other is True 
}

Coerce to zero on integer expectation

Coercing non-zero falsy values to zero with OR.

This works because the OR operator returns the value of the second operand when the first operand is falsy.

integerExpectation = nonZeroFalsyValue || 0;