Fix: empty rule properties, values or functions

Author: KugiHaito

CSSObject/enums/ICSS.js

@@ -60,6 +60,9 @@ const ICSS = {
 
         /** End Bracket Character */
         END: ')',
+
+        /** Empty Brackets Characters */
+        EMPTY: '()',
 
         /** End Rule Bracket Characters */
         END_RULE: ');'

CSSObject/parser/BlocksParser.js

@@ -47,6 +47,8 @@ const BlocksParser = (Base) => class extends Base {
 
         return rules.split(ICSS.SEMICOLON)
             .filter(r => r.trim() != ICSS.EMPTY)
+            .filter(r => !r.includes(ICSS.BRACKET.EMPTY))
+            .filter(r => !r.split(ICSS.DOTS).map(i => i.trim()).includes(ICSS.EMPTY))
             .map(rule => {
                 let [ prop, value ] = rule.split(ICSS.DOTS).map(i => i.trim())
                 return new Rule(prop, ICSS.REGEX_REPLACE(value, ICSS.DATA_URI.VALUES))

CSSObject/rules/Rule.js

@@ -122,4 +122,4 @@ class Rule {
 }
 
 
-export default Rule
+export default Rule