Updated the files.

my-app/node_modules/@schematics/angular/utility/dependencies.d.ts

@@ -0,0 +1,23 @@
+/**
+ * @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
+ */
+import { Tree } from '@angular-devkit/schematics';
+export declare enum NodeDependencyType {
+    Default = "dependencies",
+    Dev = "devDependencies",
+    Peer = "peerDependencies",
+    Optional = "optionalDependencies"
+}
+export interface NodeDependency {
+    type: NodeDependencyType;
+    name: string;
+    version: string;
+    overwrite?: boolean;
+}
+export declare function addPackageJsonDependency(tree: Tree, dependency: NodeDependency, pkgJsonPath?: string): void;
+export declare function removePackageJsonDependency(tree: Tree, name: string, pkgJsonPath?: string): void;
+export declare function getPackageJsonDependency(tree: Tree, name: string, pkgJsonPath?: string): NodeDependency | null;