import type { FastAverageColorOptions, FastAverageColorResource, FastAverageColorResult, FastAverageColorRgba } from './types';
export * from './types';
export declare class FastAverageColor {
    canvas: HTMLCanvasElement | OffscreenCanvas | null;
    ctx: CanvasRenderingContext2D | OffscreenCanvasRenderingContext2D | null;
    /**
     * Get asynchronously the average color from not loaded image.
     */
    getColorAsync(resource: FastAverageColorResource, options?: FastAverageColorOptions): Promise<FastAverageColorResult>;
    /**
     * Get average color from image url
     */
    getColorAsync(imageUrl: string, options?: FastAverageColorOptions): Promise<FastAverageColorResult>;
    /**
     * Get the average color from images, videos and canvas.
     */
    getColor(resource: FastAverageColorResource, options?: FastAverageColorOptions): FastAverageColorResult;
    /**
     * Get the average color from a array when 1 pixel is 4 bytes.
     */
    getColorFromArray4(arr: number[] | Uint8Array | Uint8ClampedArray, options?: FastAverageColorOptions): FastAverageColorRgba;
    /**
     * Get color data from value ([r, g, b, a]).
     */
    prepareResult(value: number[], error?: Error): FastAverageColorResult;
    /**
     * Destroy the instance.
     */
    destroy(): void;
    private bindImageEvents;
}