add all frontend files

node_modules/rc-util/lib/test/domHook.d.ts

@@ -0,0 +1,8 @@
+export type ElementClass = Function;
+export type Property = PropertyDescriptor | Function;
+export declare function spyElementPrototypes<T extends ElementClass>(elementClass: T, properties: Record<string, Property>): {
+    mockRestore(): void;
+};
+export declare function spyElementPrototype(Element: ElementClass, propName: string, property: Property): {
+    mockRestore(): void;
+};