import * as i0 from "@angular/core";
export declare class ExportFileService {
    exportFileAsExcel(json: any[], fileName: string): void;
    exportFileAsJson(json: any[], fileName: string): void;
    exportFileAsCsv(json: any[], fileName: string): void;
    private genExcelBuffer;
    private genJsonBuffer;
    private genCsvBuffer;
    private saveAsFile;
    static ɵfac: i0.ɵɵFactoryDeclaration<ExportFileService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ExportFileService>;
}
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