export type ChartDataValue<TValue = unknown> = Record<string, TValue>;
export interface DataKeyWithLabel<TData extends ChartDataValue> {
    dataKey: DataKeyFn<TData>;
    dataKeyLabel: DataKeyProp<TData>;
}
export type DataKeyFn<TData extends ChartDataValue = ChartDataValue, TValue = unknown> = (data: TData) => TValue;
export type DataKeyProp<TData extends ChartDataValue = ChartDataValue> = keyof TData;
export type DataKey<TData extends ChartDataValue = ChartDataValue, TValue = unknown> = DataKeyProp<TData> | DataKeyFn<TData, TValue>;
export type DataKeyValue<TData extends ChartDataValue, TDataKey extends DataKey<TData>> = TDataKey extends (data: TData) => infer R ? R : TDataKey extends keyof TData ? TData[TDataKey] : never;
export declare const isDataKeyWithLabel: <TData extends ChartDataValue>(obj: unknown) => obj is DataKeyWithLabel<TData>;
/**
 * The orientation of the chart's axes and graphical items. `"horizontal"` puts
 * the category axis on the x-axis (bars grow upwards), `"vertical"` puts it on
 * the y-axis (bars grow to the side).
 */
export type CartesianChartLayout = "horizontal" | "vertical";