import { CartesianChartDataOptionsInternal } from '../chart-data-options/types';
export declare const onlyY: ({ x, y, breakBy }: CartesianChartDataOptionsInternal) => boolean;
export declare const onlyYAndSeries: ({ x, y, breakBy }: CartesianChartDataOptionsInternal) => boolean;
export declare const isEnabled: (enabled?: boolean) => boolean;
export declare const fraction: (base: number, percentage: number) => number;
export declare const fromFraction: (base: number, value: number) => number;
export declare const withPercentSign: (x: number | string) => string;
