export declare enum ChartChange {
    QueryData = "QueryData",
    ColumnsSelection = "ColumnsSelection",
    ChartType = "ChartType",
    AggregationType = "AggregationType"
}
export declare type ChangesMap = {
    [key in ChartChange]+?: boolean;
};
export declare class Changes {
    count: number;
    private changesMap;
    constructor();
    addChange(chartChange: ChartChange): void;
    isPendingChange(chartChange: ChartChange): boolean;
}