Use fs.realpathSync in resolved files to support linked packages

Author: L8D

lib/sync.js

@@ -43,13 +43,13 @@ module.exports = function (x, options) {
 
     function loadAsFileSync(x) {
         if (isFile(x)) {
-            return x;
+            return fs.realpathSync(x);
         }
 
         for (var i = 0; i < extensions.length; i++) {
             var file = x + extensions[i];
             if (isFile(file)) {
-                return file;
+                return fs.realpathSync(file);
             }
         }
     }