import { type Readable } from 'svelte/store';
import type { TablePlugin } from '../types/TablePlugin.js';
/**
 * Supported export formats for the data export plugin.
 */
export type DataExportFormat = 'object' | 'json' | 'csv';
/**
 * Maps export formats to their output types.
 * @internal
 */
type ExportForFormat = {
    object: Record<string, unknown>[];
    json: string;
    csv: string;
};
/**
 * The export output type based on the format.
 *
 * @template F - The export format.
 */
export type DataExport<F extends DataExportFormat> = ExportForFormat[F];
/**
 * Configuration options for the addDataExport plugin.
 *
 * @template F - The export format type.
 */
export interface DataExportConfig<F extends DataExportFormat> {
    /** Key used for nested children in hierarchical exports. Defaults to 'children'. */
    childrenKey?: string;
    /** Export format: 'object', 'json', or 'csv'. Defaults to 'object'. */
    format?: F;
}
/**
 * State exposed by the addDataExport plugin.
 *
 * @template F - The export format type.
 */
export interface DataExportState<F extends DataExportFormat> {
    /** Readable store containing the exported data in the specified format. */
    exportedData: Readable<DataExport<F>>;
}
/**
 * Per-column configuration options for data export.
 */
export interface DataExportColumnOptions {
    /** If true, this column is excluded from exports. */
    exclude?: boolean;
}
/**
 * Creates a data export plugin that provides reactive exports of table data.
 * Supports exporting to objects, JSON, or CSV formats.
 *
 * @template Item - The type of data items in the table.
 * @template F - The export format type.
 * @param config - Configuration options.
 * @returns A TablePlugin that provides data export functionality.
 * @example
 * ```typescript
 * const table = createTable(data, {
 *   export: addDataExport({
 *     format: 'csv',
 *     childrenKey: 'subItems'
 *   })
 * })
 *
 * // Access exported data
 * const { exportedData } = table.pluginStates.export
 * $: csvData = $exportedData
 * ```
 */
export declare const addDataExport: <Item, F extends DataExportFormat = "object">({ format, childrenKey }?: DataExportConfig<F>) => TablePlugin<Item, DataExportState<F>, DataExportColumnOptions>;
export {};