/**
 * Compute a pinned total row from a dataset and a list of numeric fields.
 *
 * The returned object is structurally a `TData` with non-summed fields left
 * `undefined` — plug it into `pinnedBottomRowData={[totalRow]}`. Cell renderers
 * in the non-summed columns receive `undefined`, so they should render nothing
 * (all of the DS cell renderers short-circuit on `null`/`undefined`).
 *
 * Pass an optional `labelField` + `labelValue` to show a static caption such
 * as "Total" in the first column of the pinned row.
 */
export declare function useTotalRow<TData>(rowData: TData[] | undefined, sumFields: Array<keyof TData & string>, options?: {
    labelField?: keyof TData & string;
    labelValue?: string;
}): TData;
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