Updated the files.

my-app/node_modules/@schematics/angular/service/index.js

@@ -0,0 +1,19 @@
+"use strict";
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+const generate_from_files_1 = require("../utility/generate-from-files");
+function default_1(options) {
+    // This schematic uses an older method to implement the flat option
+    const flat = options.flat;
+    options.flat = true;
+    return (0, generate_from_files_1.generateFromFiles)(options, {
+        'if-flat': (s) => (flat ? '' : s),
+    });
+}
+exports.default = default_1;