import type { Viewport } from '../../Viewport.js';
import type { Props as ViewProps } from '../../View.js';
import { View } from '../../View.js';
import { Style } from '../../Style.js';
import { Size } from '../../geometry.js';
export interface ChartRange {
    min: number;
    max: number;
}
export interface ChartLayout {
    /** Available width for the chart area in terminal columns */
    width: number;
    /** Available height for the chart area in terminal rows */
    height: number;
    /** Data X range */
    xRange: ChartRange;
    /** Data Y range */
    yRange: ChartRange;
}
/**
 * Base class for chart types. A Chart is a View that knows how to compute
 * its data ranges and render into a provided layout area.
 */
export declare abstract class Chart<T = unknown> extends View {
    #private;
    constructor(data: T[], props?: ViewProps & {
        style?: Style;
    });
    get data(): T[];
    set data(value: T[]);
    get chartStyle(): Style | undefined;
    abstract getXRange(): ChartRange;
    abstract getYRange(): ChartRange;
    abstract getXLabels(): string[];
    abstract getYLabels(count: number): string[];
    /**
     * Render the chart into the given viewport area. The viewport is already
     * clipped/positioned to the chart drawing area by the parent Plot.
     */
    abstract renderChart(viewport: Viewport, layout: ChartLayout): void;
    naturalSize(available: Size): Size;
    render(viewport: Viewport): void;
}