import type { ChartColorLegend, ChartLegendPlacement } from './types.js';
export interface ColorLegendOptions {
    label?: string;
    itemWidth?: number;
    width?: number;
    format?: (value: number) => string;
    placement?: ChartLegendPlacement;
}
export interface ColorGradientLegendOptions {
    label?: string;
    steps?: number;
    width?: number;
    format?: (value: number) => string;
    placement?: ChartLegendPlacement;
}
export declare function colorLegend(options?: ColorLegendOptions): ChartColorLegend;
export declare function colorGradientLegend(options?: ColorGradientLegendOptions): ChartColorLegend;