/** @internal */
export declare function supportsChartToTableToggle(chartType: string | undefined): boolean;
/**
 * Minimal shape of `TableDataOptions` produced by flattening a chart's axes.
 *
 * @example
 * ```ts
 * const tableDataOptions: TableDataOptionsLike = { columns: [{ column: { name: 'Revenue' } }] };
 * ```
 * @internal
 */
type TableDataOptionsLike = {
    columns: unknown[];
};
/**
 * Flattens chart axes into Table `columns`, deduping by column object reference.
 *
 * @param dataOptions - A chart's `dataOptions`, or `undefined`.
 * @returns Table-shaped `{ columns }`, cached per `dataOptions` object for referential stability.
 * @internal
 */
export declare function toTableDataOptions(dataOptions: Record<string, unknown> | undefined): TableDataOptionsLike;
/**
 * Checks whether a chart's `dataOptions` flattens into at least one table column.
 *
 * @param dataOptions - A chart's `dataOptions`, of unknown shape.
 * @returns `true` if flattening `dataOptions` yields at least one column.
 * @internal
 */
export declare function hasFlattenedTableColumns(dataOptions: unknown): boolean;
/** @internal */
export declare function shouldShowChartTableToggle(chartType: string | undefined, dataOptions: unknown): boolean;
type ChartPropsLike = {
    chartType?: string;
    dataOptions?: unknown;
};
/**
 * Overlays `chartType: 'table'` and flattened columns when `isTableView` is true.
 * Typed as `T` so callers can spread back into `ChartWidget`.
 *
 * @internal
 */
export declare function applyChartTableOverride<T extends ChartPropsLike>(props: T, isTableView: boolean): T;
/**
 * Normalizes a value to a primitive reset identity.
 *
 * @param value - Candidate reset key
 * @returns The value when it is a string, number, boolean, or null; otherwise `undefined`
 * @internal
 */
export declare function toResetIdentity(value: unknown): string | number | boolean | null | undefined;
export {};