@testing-library/user-event/dist/types/system/index.d.ts

Fire events the same way the user does

import { KeyboardHost } from './keyboard';
import { PointerHost } from './pointer';
/**
 * @internal Do not create/alter this by yourself as this type might be subject to changes.
 */
export declare class System {
    readonly keyboard: KeyboardHost;
    readonly pointer: PointerHost;
    getUIEventModifiers(): EventModifierInit;
}