import type { AnyObject } from "antd/es/_util/type";
/**
 * Aggregated & grouped node, ready for AntD table.
 */
export interface AggregatedNode extends AnyObject {
    key: string;
    totalValue: number;
    totalCount: number;
    averageValue: number;
    percentageOfParentRaw: number;
    percentageOfParent: string;
    percentageOfRootRaw: number;
    percentageOfRoot: string;
    children?: AggregatedNode[];
}
/**
 * Options to configure which fields are value/count in raw data.
 */
export interface AggregationConfig {
    valueField: string;
    countField?: string;
}
/**
 * Groups data by multiple keys recursively.
 */
export declare function groupByKeysWithKey(data: AnyObject[], keys: string[], config: AggregationConfig, parentKey?: string): AggregatedNode[];
/**
 * Recursively computes totals, averages, parent/root percentages.
 */
export declare function addAggregatesWithDerived(node: AggregatedNode, parentTotalValue?: number, rootTotalValue?: number): AggregatedNode;
/**
 * Recursively sorts children arrays in tree.
 */
export declare function sortGroups(node: AggregatedNode, compareFn: (a: AggregatedNode, b: AggregatedNode) => number): AggregatedNode;
/**
 * Pivot flat data into wide rows: rowKey → pivotKey values → valueField.
 */
export interface PivotOptions {
    rowKey: string;
    pivotKey: string;
    valueField: string;
    transformValue?: (value: unknown, item: AnyObject) => unknown;
    addAverageField?: boolean;
    orderedPivotKeys?: string[];
}
export declare function pivotData(data: AnyObject[], options: PivotOptions): AnyObject[];
/**
 * Functional pipeline: apply transformations. Compose multiple transform steps.
 */
export declare function transformPipeline(data: AnyObject[], steps: ((data: AnyObject[]) => AnyObject[])[]): AnyObject[];
/**
 * Filter flat array.
 */
export declare function filterData(data: AnyObject[], predicate: (item: AnyObject) => boolean): AnyObject[];
/**
 * Sort flat array.
 */
export declare function sortData(data: AnyObject[], compareFn: (a: AnyObject, b: AnyObject) => number): AnyObject[];