import type { NzSafeAny } from 'ng-zorro-antd/core/types';
type PDFDocumentProxy = NzSafeAny;
export type PdfChangeEventType = 'loaded' | 'load-progress' | 'pages-init' | 'page-rendered' | 'text-layer-rendered' | 'pi' | 'error';
export type PdfZoomScale = 'page-height' | 'page-fit' | 'page-width';
export interface PdfChangeEvent {
    type?: PdfChangeEventType;
    pi?: number;
    total?: number;
    pdf?: PDFDocumentProxy | null;
    ev?: NzSafeAny;
    progress?: {
        loaded: number;
        total: number;
    };
    error?: NzSafeAny;
}
export declare enum PdfTextLayerMode {
    DISABLE = 0,
    ENABLE = 1,
    ENABLE_ENHANCE = 2
}
export declare enum PdfExternalLinkTarget {
    NONE = 0,// Default value.
    SELF = 1,
    BLANK = 2,
    PARENT = 3,
    TOP = 4
}
export {};