Noissue - Skip unless-domain if list is empty

lib/abp2blocklist.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 624 matching lines @@
     newSelector.push('[id=', selector.substring(pos.start + 1, pos.end), ']');
     i = pos.end;
   }
   newSelector.push(selector.substring(i));
 
   return newSelector.join("");
 }
 
 function addCSSRules(rules, selectors, domain, exceptionDomains)
 {
-  let unlessDomain = exceptionDomains.size > 0 ? [] : null;
+  let unlessDomain = [];
 
   exceptionDomains.forEach(name =>
   {
     // For domain-specific filters, include the exception domains only if
     // they're subdomains of the given domain.
     if (!domain || name.substr(-domain.length - 1) == "." + domain)
       unlessDomain.push("*" + name);
   });
 
   while (selectors.length)
   {
     let selector = selectors.splice(0, selectorLimit).join(", ");
 
     // As of Safari 9.0 element IDs are matched as lowercase. We work around
     // this by converting to the attribute format [id="elementID"]
     selector = convertIDSelectorsToAttributeSelectors(selector);
 
     let rule = {
       trigger: {"url-filter": matchDomain(domain),
                 "url-filter-is-case-sensitive": true},
       action: {type: "css-display-none",
                selector: selector}
     };
 
-    if (unlessDomain)
+    if (unlessDomain.length > 0)
       rule.trigger["unless-domain"] = unlessDomain;
 
     rules.push(rule);
   }
 }
 
 /**
  * Check if two strings are a close match
  *
  * This function returns an edit operation, one of "substitute", "delete", and
@@ skipping 640 matching lines @@
       .then(rules =>
       {
         ruleGroups[index] = rules;
         return next();
       });
     }
 
     return next();
   });
 };