Updated the files.

my-app/node_modules/@angular/animations/browser/testing/index.d.ts

@@ -0,0 +1,53 @@
+/**
+ * @license Angular v17.1.3
+ * (c) 2010-2022 Google LLC. https://angular.io/
+ * License: MIT
+ */
+
+
+import { AnimationDriver } from '@angular/animations/browser';
+import { AnimationPlayer } from '@angular/animations';
+import { NoopAnimationPlayer } from '@angular/animations';
+import { ɵStyleDataMap } from '@angular/animations';
+
+/**
+ * @publicApi
+ */
+export declare class MockAnimationDriver implements AnimationDriver {
+    static log: AnimationPlayer[];
+    validateStyleProperty(prop: string): boolean;
+    validateAnimatableStyleProperty(prop: string): boolean;
+    matchesElement(_element: any, _selector: string): boolean;
+    containsElement(elm1: any, elm2: any): boolean;
+    getParentElement(element: unknown): unknown;
+    query(element: any, selector: string, multi: boolean): any[];
+    computeStyle(element: any, prop: string, defaultValue?: string): string;
+    animate(element: any, keyframes: Array<ɵStyleDataMap>, duration: number, delay: number, easing: string, previousPlayers?: any[]): MockAnimationPlayer;
+}
+
+/**
+ * @publicApi
+ */
+export declare class MockAnimationPlayer extends NoopAnimationPlayer {
+    element: any;
+    keyframes: Array<ɵStyleDataMap>;
+    duration: number;
+    delay: number;
+    easing: string;
+    previousPlayers: any[];
+    private __finished;
+    private __started;
+    previousStyles: ɵStyleDataMap;
+    private _onInitFns;
+    currentSnapshot: ɵStyleDataMap;
+    private _keyframes;
+    constructor(element: any, keyframes: Array<ɵStyleDataMap>, duration: number, delay: number, easing: string, previousPlayers: any[]);
+    reset(): void;
+    finish(): void;
+    destroy(): void;
+    play(): void;
+    hasStarted(): boolean;
+    beforeDestroy(): void;
+}
+
+export { }