/// <reference types="node" />
export interface MatchOptions {
    /**
     * Percentage of pixels allowed to be different for two images to be considered the same
     */
    tolerancePercent?: number;
    /**
     * Format of the image buffer passed back as the image diff
     */
    diffOutputFormat?: 'png' | 'jpeg';
}
export interface MatchResult {
    /**
     * `true` if the two images are sufficiently similar
     */
    didMatch: boolean;
    /**
     * Buffer containing image data highlighting the diff
     */
    imageDiffData?: Buffer;
}
/**
 * Compares two images.
 * @param imageA A node Buffer object containing raw data of the first image to compare
 * @param imageB A node Buffer object containing raw data of the second image to compare
 * @param options Specify matching options
 */
export declare function isMatch(imageA: Buffer, imageB: Buffer, options: MatchOptions): Promise<MatchResult>;