/**
 * AG-Grid 底部汇总聚合纯函数(从 ag-gridPlus.tsx 抽出,行为原样)。
 * @author nokecy
 */
export interface CalculationColumnConfig {
    field: string;
    calculateType: 'sum' | 'avg' | 'standardDeviation';
    transactionAmount?: number;
    formatWithCommas?: boolean;
    cellRenderer?: any;
}
export interface CalculationColumnDefinition {
    field?: string;
    calculateType?: CalculationColumnConfig['calculateType'] | false;
    transactionAmount?: number;
    formatWithCommas?: boolean;
    children?: CalculationColumnDefinition[];
}
/** 分组表头只是展示结构；原生固定合计行要读取所有叶子数值列。@author nokecy */
export declare const getCalculationColumns: (columns: CalculationColumnDefinition[]) => CalculationColumnConfig[];
/** 精确数值字符串参与汇总；空值、非法文本及非有限数字跳过。@author nokecy */
export declare const isValidNumber: (value: any) => boolean;
export declare const sumField: (field: string, data: any[]) => number | string;
export declare const avgField: (field: string, data: any[]) => number | string;
export declare const stdDevField: (field: string, data: any[]) => number | string;
export declare const formatWithCommas: (value: number | string, places?: number) => string;
export declare const computeAggregationRow: (calcColFields: CalculationColumnConfig[], data: any[]) => any[];