interface BlazeDiffOptions {
    /** Color difference threshold (0.0-1.0). Lower = more strict. Default: 0.1 */
    threshold?: number;
    /** Enable anti-aliasing detection to exclude AA pixels from diff count */
    antialiasing?: boolean;
    /** Output only differences with transparent background */
    diffMask?: boolean;
    /** PNG compression level (0-9, 0=fastest/largest, 9=slowest/smallest) */
    compression?: number;
    /** JPEG quality (1-100). Default: 90 */
    quality?: number;
}
type BlazeDiffResult = {
    match: true;
} | {
    match: false;
    reason: "layout-diff";
} | {
    match: false;
    reason: "pixel-diff";
    diffCount: number;
    diffPercentage: number;
} | {
    match: false;
    reason: "file-not-exists";
    file: string;
};
/**
 * Compare two images (PNG or JPEG) and optionally generate a diff image.
 *
 * Uses native N-API bindings when available for ~10-100x better performance
 * on small images (no process spawn overhead). Falls back to execFile if
 * native bindings are unavailable.
 *
 * @example
 * ```ts
 * // With diff output
 * const result = await compare('expected.png', 'actual.png', 'diff.png');
 *
 * // Without diff output (faster, just returns comparison result)
 * const result = await compare('expected.png', 'actual.png');
 *
 * if (result.match) {
 *   console.log('Images identical');
 * } else if (result.reason === 'pixel-diff') {
 *   console.log(`${result.diffCount} pixels differ`);
 * }
 * ```
 */
declare function compare(basePath: string, comparePath: string, diffOutput?: string, options?: BlazeDiffOptions): Promise<BlazeDiffResult>;
/** Get the path to the blazediff binary for direct CLI usage. */
declare function getBinaryPath(): string;
/**
 * Check if native N-API bindings are available.
 * Returns true if the native module loaded successfully.
 */
declare function hasNativeBinding(): boolean;

export { type BlazeDiffOptions, type BlazeDiffResult, compare, getBinaryPath, hasNativeBinding };