import * as PDFJS from "pdfjs-dist";
import "pdfjs-dist/build/pdf.worker";
import { FormFields, FormGroup } from "../types";
export declare class PdfService {
    protected pdfJs: typeof PDFJS;
    constructor(workerSrc?: string);
    getPdfAnnotations(url: string, group?: boolean): Promise<FormGroup[]>;
    protected groupRadioButtons(formGroups: FormGroup[]): FormGroup[];
    protected transformPdfAnnotations(formFields: FormFields[]): FormFields[];
    protected splitFieldName(formField: FormFields): {
        groupNames: string[];
        customOrderPosition: number | undefined;
    };
    /**
     * If the fieldName is [title][desciption][newFieldName] all fields with the same title will be grouped
     * You can also add an order position like this [title][desciption][newFieldName][10] and all fields with an order position will be sorted insite the group
     * @param formFields
     */
    protected groupByFieldNames(formFields: FormFields[]): FormGroup[];
    protected transformPdfAnnotation(formField: FormFields, index: number): FormFields;
}