import { type Readable, type Writable } from 'svelte/store';
import type { BodyRow } from '../bodyRows.js';
import type { NewTablePropSet, TablePlugin } from '../types/TablePlugin.js';
import { type RecordSetStore } from '../utils/store.js';
/**
 * Configuration options for the addExpandedRows plugin.
 *
 * @template _Item - The type of data items (unused but required for type inference).
 */
export interface ExpandedRowsConfig<_Item> {
    /** Initial expanded state keyed by row ID. */
    initialExpandedIds?: Record<string, boolean>;
}
/**
 * State exposed by the addExpandedRows plugin.
 *
 * @template Item - The type of data items in the table.
 */
export interface ExpandedRowsState<Item> {
    /** Store containing expanded row IDs. */
    expandedIds: RecordSetStore<string>;
    /** Gets the expansion state stores for a specific row. */
    getRowState: (_row: BodyRow<Item>) => ExpandedRowsRowState;
    /** Cleans up internal subscriptions and clears the row state cache. Call when destroying the table. */
    invalidate: () => void;
}
/**
 * Expansion state for a single row.
 */
export interface ExpandedRowsRowState {
    /** Writable store for the row's expanded state. */
    isExpanded: Writable<boolean>;
    /** Readable store indicating if this row can be expanded (has sub-rows). */
    canExpand: Readable<boolean>;
    /** Readable store indicating if all expandable sub-rows are expanded. */
    isAllSubRowsExpanded: Readable<boolean>;
}
/**
 * Creates an expanded rows plugin that enables expanding/collapsing rows with sub-rows.
 * When a row is expanded, its sub-rows are included in the flattened row list.
 *
 * @template Item - The type of data items in the table.
 * @param config - Configuration options.
 * @returns A TablePlugin that provides row expansion functionality.
 * @example
 * ```typescript
 * const table = createTable(data, {
 *   expand: addExpandedRows({
 *     initialExpandedIds: { '0': true } // Row 0 starts expanded
 *   })
 * })
 *
 * // Toggle expansion
 * const rowState = table.pluginStates.expand.getRowState(row)
 * rowState.isExpanded.update(v => !v)
 * ```
 */
export declare const addExpandedRows: <Item>({ initialExpandedIds }?: ExpandedRowsConfig<Item>) => TablePlugin<Item, ExpandedRowsState<Item>, Record<string, never>, NewTablePropSet<never>>;