Issue 3687 - Add experimental support for Safari content blockers

lib/url.js

Index: lib/url.js
diff --git a/lib/url.js b/lib/url.js
index 78a5f9599d4dd1404cdebda930e23539a97ad336..3a4d3bc485c420924bd76564d2d33aa2ade22477 100644
--- a/lib/url.js
+++ b/lib/url.js
@@ -17,6 +17,8 @@
 
 /** @module url */
 
+let getDomain = require("tldjs").getDomain;
+
 let getDecodedHostname =
 /**
  * Gets the IDN-decoded hostname from a URL object.
@@ -92,28 +94,6 @@ function isDomain(hostname)
   return hostname.indexOf(":") == -1;
 }
 
-function getBaseDomain(hostname)
-{
-  let bits = hostname.split(".");
-  let cutoff = bits.length - 2;
-
-  for (let i = 0; i < bits.length; i++)
-  {
-    let offset = publicSuffixes[bits.slice(i).join(".")];
-
-    if (typeof offset != "undefined")
-    {
-      cutoff = i - offset;
-      break;
-    }
-  }
-
-  if (cutoff <= 0)
-    return hostname;
-
-  return bits.slice(cutoff).join(".");
-}
-
 /**
  * Checks whether the request's origin is different from the document's origin.
  *
@@ -132,5 +112,5 @@ exports.isThirdParty = function(url, documentHost)
   if (!isDomain(requestHost) || !isDomain(documentHost))
     return true;
 
-  return getBaseDomain(requestHost) != getBaseDomain(documentHost);
+  return getDomain(requestHost) != getDomain(documentHost);
 };