import { Key } from 'antd/es/table/interface';
import { ExtendedColumnType, TableSortMode, TableSortingField } from './types';

/** 列配置上的 API 排序字段名；缺省取 dataIndex 路径字符串 */
export declare function resolveSortField(col: ExtendedColumnType): string;
/** columnKey / field -> API sortField */
export declare function buildSortFieldLookup(columns: ExtendedColumnType[]): Map<string, string>;
export interface ApplyColumnSortOptions {
    sortMode?: TableSortMode;
    /** 表级总开关为 false 时不注入 sorter */
    tableSortEnabled?: boolean;
}
/** 归一化表级排序模式，拒绝 undefined / "undefined" 等脏值 */
export declare function normalizeTableSortMode(raw: unknown): TableSortMode;
export declare function applyColumnSort(col: ExtendedColumnType, active: TableSortingField[], options?: ApplyColumnSortOptions): ExtendedColumnType;
type SorterLike = {
    columnKey?: Key;
    field?: Key | readonly Key[];
    order?: 'ascend' | 'descend' | null;
};
export declare function normalizeSorterList(sorter: SorterLike | SorterLike[] | undefined): SorterLike[];
export declare function parseSorterToSortingFields(sorter: SorterLike | SorterLike[] | undefined, lookup: Map<string, string>): TableSortingField[];
/**
 * 单列模式：antd 第三次点击 order=null 时，若上一状态为 descend，改写为 ascend（不取消排序）。
 * 多列模式：保持 antd 默认（null = 取消该列排序）。
 */
export declare function resolveSortingFieldsAfterChange(previous: TableSortingField[], sorter: SorterLike | SorterLike[] | undefined, lookup: Map<string, string>, sortMode?: TableSortMode): TableSortingField[];
export declare function readSortingFieldsFromPagination(pagination: Record<string, unknown>): TableSortingField[];
/** Extend 出站：antd order → 后台 SortingField.order */
export declare function mapSortingFieldsToApi(rows?: TableSortingField[]): Array<{
    field: string;
    order: 'asc' | 'desc';
}> | undefined;
export {};
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