import { PDFDocumentProxy, PDFPageProxy } from 'pdfjs-dist';
import type * as PdfJs from 'pdfjs-dist';
export type AdapterType = 'pdfjs';
export type PdfJsLib = Pick<typeof PdfJs, 'getDocument' | 'GlobalWorkerOptions' | 'version'>;
export type PdfSource = NonNullable<Parameters<PdfJsLib['getDocument']>[0]>;
export type PDFJSConfig = {
    pdfLib?: object;
    workerSrc?: string;
    setWorker?: boolean;
};
export type PDFConfig = PDFJSConfig & {
    adapter: AdapterType;
};
export declare const createPDFConfig: (config?: Partial<PDFConfig>) => PDFConfig;
declare abstract class PDFAdapter {
    constructor();
}
export declare class PDFJSAdapter extends PDFAdapter {
    pdfLib: object | undefined;
    workerSrc: string | undefined;
    constructor(config: PDFJSConfig);
    getDocument(file: PdfSource): Promise<PDFDocumentProxy>;
    getPages<Page = PDFPageProxy>(pdf: {
        getPage(pageNumber: number): Promise<Page>;
    }, firstPage: number, lastPage: number): Promise<Page[]>;
}
export declare class PDFAdapterFactory {
    static create(config: PDFJSConfig & {
        adapter: string;
    }): PDFJSAdapter;
}
export declare function getWorkerSrcFromCDN(version: string): string;
export {};