remove uneeded else branch in matching empty paths

packages/router/utils.ts

@@ -639,22 +639,15 @@ function compilePath(
     regexpSource += "\\/*$";
   } else if (path !== "" && path !== "/") {
     // If our path is non-empty and contains anything beyond an initial slash,
-    // then we have _some_ form of path and we do not want to include the
-    // positive lookahead below, otherwise we incorrectly match things like
-    // /user-preferences for path /user.  So, we look for an optional non-captured
-    // trailing slash (to match a portion of the URL) or the end of the path
-    // (if we've matched to the end).  We used to do this with a word boundary
-    // but that gives false positives on routes like /user-preferences since
-    // `-` counts as a word boundary.
+    // then we have _some_ form of path in our regex so we should expect to
+    // match only if we find the end of this path segment.  Look for an optional
+    // non-captured trailing slash (to match a portion of the URL) or the end
+    // of the path (if we've matched to the end).  We used to do this with a
+    // word boundary but that gives false positives on routes like
+    // /user-preferences since `-` counts as a word boundary.
     regexpSource += "(?:(?=\\/|$))";
   } else {
-    // Otherwise, if we are an empty path, match a word boundary or a
-    // proceeding /. The word boundary restricts parent routes to matching only
-    // their own words and nothing more, e.g. parent route "/home" should not
-    // match "/home2". Additionally, allow paths starting with `.`, `-`, `~`,
-    // and url-encoded entities, but do not consume the character in the
-    // matched path so they can match against nested paths.
-    regexpSource += "(?:(?=[@.~-]|%[0-9A-F]{2})|\\b|\\/|$)";
+    // Nothing to match for "" or "/"
   }
 
   let matcher = new RegExp(regexpSource, caseSensitive ? undefined : "i");