import { GridColumnDef, GridGroupState } from './models';
import * as i0 from "@angular/core";
/**
 * Standalone injectable service for exporting grid data to JSON, CSV, and Excel formats.
 * Extracted from DataGridComponent to enable reuse and reduce component size.
 */
export declare class GridExportService {
    /**
     * Export data as a JSON file download.
     */
    exportToJson<T>(data: T[], filename?: string): void;
    /**
     * Export data as a CSV file download.
     */
    exportToCsv<T extends object>(data: T[], columns: GridColumnDef<T>[], filename?: string, groupBy?: GridGroupState | null): void;
    /**
     * Export data as an Excel (.xls) file download using an HTML table template.
     */
    exportToExcel<T extends object>(data: T[], columns: GridColumnDef<T>[], filename?: string, groupBy?: GridGroupState | null): void;
    exportToPdf<T extends object>(data: T[], columns: GridColumnDef<T>[], title?: string, groupBy?: GridGroupState | null): void;
    /**
     * Create a temporary anchor element, trigger a download, and clean up.
     */
    private triggerDownload;
    static ɵfac: i0.ɵɵFactoryDeclaration<GridExportService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<GridExportService>;
}