export interface VisualViewportValues {
    height: number;
    offsetLeft: number;
    offsetTop: number;
    pageLeft: number;
    pageTop: number;
    scale: number;
    width: number;
}
/**
 * Mock-implementation of `VisualViewport` with ability to control state programmatically.
 * Useful for unit testing.
 * Can be used in any runtime that implements `EventTarget` (browsers, Node.js, Deno, Bun...).
 */
export declare class VisualViewportMock extends EventTarget implements VisualViewport {
    /** @inheritdoc */
    readonly height: number;
    /** @inheritdoc */
    readonly offsetLeft: number;
    /** @inheritdoc */
    readonly offsetTop: number;
    /** @inheritdoc */
    readonly pageLeft: number;
    /** @inheritdoc */
    readonly pageTop: number;
    /** @inheritdoc */
    readonly scale: number;
    /** @inheritdoc */
    readonly width: number;
    protected _onresize: ((this: VisualViewport, event: Event) => any) | null;
    protected _onscroll: ((this: VisualViewport, event: Event) => any) | null;
    constructor(defaults?: Partial<VisualViewportValues>);
    /** @inheritdoc */
    get onresize(): ((this: VisualViewport, event: Event) => any) | null;
    /** @inheritdoc */
    set onresize(value: ((this: VisualViewport, event: Event) => any) | null);
    /** @inheritdoc */
    get onscroll(): ((this: VisualViewport, event: Event) => any) | null;
    /** @inheritdoc */
    set onscroll(value: ((this: VisualViewport, event: Event) => any) | null);
    /** @inheritdoc */
    addEventListener<K extends keyof VisualViewportEventMap>(type: K, listener: (this: VisualViewport, event: VisualViewportEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
    /** @inheritdoc */
    addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
    /** @inheritdoc */
    removeEventListener<K extends keyof VisualViewportEventMap>(type: K, listener: (this: VisualViewport, event: VisualViewportEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
    /** @inheritdoc */
    removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
    /**
     * Sets numeric values.
     * @param values Values.
     */
    protected setValues(values: Partial<VisualViewportValues>): void;
    /**
     * Dispatches `resize` event. If values provided then applies it before dispatching.
     * @param values Values.
     */
    simulateResize(values?: Partial<VisualViewportValues>): void;
    /**
     * Dispatches `scroll` event. If values provided then applies it before dispatching.
     * @param values Values.
     */
    simulateScroll(values?: Partial<VisualViewportValues>): void;
}