normalize static method
Implementation
static String? normalize(dynamic expression)
{
expression = S.toStr(expression);
if (expression == null) return null;
//////////////////////////////////////////////
/* Remove Extraneous Unquoted Blank Strings */
//////////////////////////////////////////////
return expression.replaceAll(RegExp(r"\s+(?=(?:[^\']*[\'][^\']*[\'])*[^\']*$)"), '');
}