import * as i0 from "@angular/core";
/**
 * ChartExportService — SSR-safe chart data and image export.
 *
 * All public methods are no-ops on the server (SSR) platform.
 * Inject this service in chart components to avoid duplicating
 * download logic and document/window references across all 70+ charts.
 *
 * Usage:
 *   private readonly exportSvc = inject(ChartExportService);
 *   this.exportSvc.downloadCsv(headers, rows, 'my-chart.csv');
 */
export declare class ChartExportService {
    private readonly doc;
    private readonly platformId;
    private get isBrowser();
    /** Trigger a file download from a Blob */
    private triggerDownload;
    /** Download chart data as CSV */
    downloadCsv(headers: string[], rows: (string | number)[][], filename: string): void;
    /** Download chart data as JSON */
    downloadJson(data: object, filename: string): void;
    /** Download the chart SVG element as an .svg file */
    downloadSvg(svgEl: SVGElement | null | undefined, filename: string): void;
    /** Open a print dialog to save the chart as PDF (print-to-PDF) */
    downloadPdf(svgEl: SVGElement | null | undefined, title: string, filename: string): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ChartExportService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ChartExportService>;
}