import { FieldStyle } from '../models/fieldstyle';
export declare class HelperService {
    monthNames: string[];
    copyArray(arr: any[]): any[];
    copyObject(arr: any): any;
    getMonthName(monthNo: any): string;
    getHeaderStyle(): FieldStyle;
    getGrandTotalStyle(): FieldStyle;
    getCellStyle(): FieldStyle;
    getStyleData(): any;
    getPageInfo(pdfColCount: any): {
        pageOrientation: string;
        pageSize: string;
        pageWidth: number;
    };
}