/**
 * Options of the `button` component accepted by {@link ButtonComponentSystem} that differ from the
 * properties of {@link ButtonComponent}. Each replaces the same-named property of the options that
 * {@link Entity#addComponent} derives from the component class; see
 * {@link ComponentOptionsOverrides}.
 */
export type ButtonComponentOptionsOverrides = {
    /**
     * - Same as {@link ButtonComponent#hitPadding}, also
     * accepting an `[x, y, z, w]` array.
     */
    hitPadding?: Vec4 | number[];
};
/**
 * Manages the {@link ButtonComponent}s of an application. Reach it through `app.systems.button`;
 * components are created with {@link Entity#addComponent}, never by calling the system directly.
 *
 * @category User Interface
 */
export class ButtonComponentSystem extends ComponentSystem {
    id: string;
    ComponentType: typeof ButtonComponent;
    initializeComponentData(component: any, data: any, properties: any): void;
    cloneComponent(entity: any, clone: any): import("../component.js").Component;
    onUpdate(dt: any): void;
    onBeforeRemove(entity: any, component: any): void;
}
import type { Vec4 } from '../../../core/math/vec4.js';
import { ComponentSystem } from '../system.js';
import { ButtonComponent } from './component.js';