import { PdfIndirectObject } from '../core/objects/pdf-indirect-object.js';
import { PdfAnnotation } from './pdf-annotation.js';
/**
 * Widget annotation subtype. Extends PdfAnnotation with widget-specific
 * properties: isWidget (Type/Subtype) and AS (appearance state).
 */
export declare class PdfWidgetAnnotation extends PdfAnnotation {
    constructor(options?: {
        other?: PdfIndirectObject;
    });
    get isWidget(): boolean;
    set isWidget(isWidget: boolean);
    get appearanceState(): string | null;
    set appearanceState(state: string | null);
}