import type { IParams } from '../types';
import type { IPieChartData, IPieChartOptions, IPieChartSlice } from './types';
export declare function adjustColor(color: string, amount: number): string;
export declare function calc(data: ReadonlyArray<Readonly<IPieChartData>>, options: Readonly<IPieChartOptions>): ReadonlyArray<Readonly<IPieChartSlice>>;
export declare function draw(params: Readonly<IParams<IPieChartSlice, IPieChartOptions>>): void;