import { ColumnDefinition, PivotAggregationType } from '../types';
import { PivotPreviewColumn, PivotPreviewRow, PivotValueConfig } from './types';
export declare const normalizePivotValue: (value: unknown) => string;
export declare const getPivotFieldOptions: <T extends Record<string, unknown>>(columns: ColumnDefinition<T>[]) => Array<{
    key: string;
    label: string;
}>;
export declare const isPivotNumericValue: (value: unknown) => boolean;
export declare const getSupportedAggregationsForField: <T extends Record<string, unknown>>(data: T[], field: keyof T, allowedAggregations: PivotAggregationType[], isNumericColumn?: boolean) => PivotAggregationType[];
/**
 * Builds the rectangular grid the modal preview renders as a {@link DataTable}.
 *
 * - **Columns:** First column key `__rowLabel` — header is joined row field names
 *   (or `All Rows`). Each unique combination of **column** dimension values
 *   becomes a group; for each group, every **value** config adds one column
 *   (`columnKey__field__aggregation`).
 * - **Rows:** One row per distinct row-dimension key; cells are aggregated from
 *   raw rows that match that row key and column key.
 * - **Grand total:** Appended last with `__pivotRowType: 'grand_total'` and
 *   `__rowLabel` `"Grand Total"`; each metric is aggregated over the full
 *   (already filtered) `data` for that column bucket.
 */
export declare const buildPivotPreview: <T extends Record<string, unknown>>(data: T[], rowFields: Array<keyof T> | Array<{
    field: keyof T;
    showTotal?: boolean;
}>, columnFields: Array<keyof T> | Array<{
    field: keyof T;
    showTotal?: boolean;
}>, valueConfigs: PivotValueConfig<T>[], fieldLabelByKey?: Record<string, string>) => {
    columns: PivotPreviewColumn[];
    rows: PivotPreviewRow[];
};