import { Chart } from '../chart/types';

export type StackExportFormat = "png" | "jpeg" | "webp";
export type StackExportResolution = "standard" | "2k" | "4k" | "8k" | number;
export interface StackExportOptions {
    format?: StackExportFormat;
    quality?: number;
    resolution?: StackExportResolution;
    includeBackground?: boolean;
    includeDividers?: boolean;
    transparent?: boolean;
}
/** @internal Exported for unit tests */
export declare function stackResolutionScale(res: StackExportResolution): number;
/**
 * Compose every pane chart into one raster image matching the on-screen stack layout.
 */
export declare function exportStackImage(container: HTMLDivElement, paneWrappers: HTMLDivElement[], paneCharts: Chart[], dividers: HTMLDivElement[], backgroundColor: string, options?: StackExportOptions): Promise<string>;