Implement path alias unpacking

lib/path-set.js

@@ -79,18 +79,19 @@ class PathSet {
       }
     }
 
-    var wildcards = 0;
+    var wildcard = 0;
     this.lengthIndex[path.length].add(path);
     for (let i = 0; i < path.length; ++ i) {
       let fragment = path[i];
       if (fragment === '*')
-        wildcards |= 1 << i;
+        wildcard |= 1 << i;
 
       this.fragmentIndex[i][fragment].add(path);
     }
 
-    if (path.wildcards == null) {
-      path.wildcards = wildcards;
+    if (path.wildcard == null) {
+      path.alias = 0;
+      path.wildcard = wildcard;
       Object.freeze(path);
     }
     return path;