diff --git a/modules/@angular/router/tsconfig-es2015.json b/modules/@angular/router/tsconfig-es2015.json
index 50d8392ef0..9ee3b1d581 100644
--- a/modules/@angular/router/tsconfig-es2015.json
+++ b/modules/@angular/router/tsconfig-es2015.json
@@ -4,7 +4,7 @@
     "declaration": true,
     "stripInternal": true,
     "experimentalDecorators": true,
-    "module": "commonjs",
+    "module": "es2015",
     "moduleResolution": "node",
     "outDir": "../../../dist/packages-dist/router/esm",
     "paths": {
diff --git a/modules/@angular/router/tsconfig.json b/modules/@angular/router/tsconfig.json
index d8e34e9c3a..18bbfd7760 100644
--- a/modules/@angular/router/tsconfig.json
+++ b/modules/@angular/router/tsconfig.json
@@ -30,6 +30,7 @@
     "src/router_outlet_map.ts",
     "src/router_state.ts",
     "src/shared.ts",
+    "src/url_tree.ts",
     "src/common_router_providers.ts",
     "src/router_providers.ts",
     "src/create_url_tree.ts",