import { CSSProperties } from 'react';
export declare type ChartLabelsTheme = {
    fontSize?: CSSProperties['fontSize'];
};
export declare type ChartTheme = {
    title?: ChartLabelsTheme;
    subject?: ChartLabelsTheme;
    labels?: ChartLabelsTheme;
    legend?: ChartLabelsTheme;
    tableText?: ChartLabelsTheme;
    dataLabels?: ChartLabelsTheme;
};
export declare const ASSUMED_AVERAGE_CHAR_WIDTH = 6;
export declare const ASSUMED_AVERAGE_CHAR_HEIGHT = 11;
export declare function getAverageCharSize(averageSize: number, theme?: ChartTheme, property?: 'title' | 'subject' | 'labels' | 'legend' | 'tableText'): number;
export declare function getAverageCharWidth(theme?: ChartTheme): number;
export declare function getAverageCharHeight(theme?: ChartTheme): number;
