/**
 * Shared types for image utilities.
 * Kept in a separate module so consumers can `import type` without pulling
 * Jimp / Sharp into their dependency graph.
 */
export interface CompressOptions {
    maxWidth?: number;
    maxHeight?: number;
    quality?: number;
    maxSizeBytes?: number;
    /** When true, use Sharp (native) for faster compression if available. */
    turbo?: boolean;
}
export interface CompressResult {
    data: string;
    mimeType: string;
    width: number;
    height: number;
    originalWidth: number;
    originalHeight: number;
}
export interface DiffRegion {
    x: number;
    y: number;
    width: number;
    height: number;
}
export interface ScreenDiffResult {
    changePercent: number;
    changedRegion: DiffRegion | null;
    changedPixels: number;
    totalPixels: number;
}
export interface DiffOverlayResult {
    image: Buffer;
    regions: DiffRegion[];
    changePercent: number;
    changedPixels: number;
    totalPixels: number;
}
export interface RGBA {
    r: number;
    g: number;
    b: number;
    a: number;
}
export interface AnnotateResult {
    image: CompressResult;
    elements: Array<{
        index: number;
        label: string;
        clickable: boolean;
        center: {
            x: number;
            y: number;
        };
    }>;
}
export declare const DEFAULT_COMPRESS_OPTIONS: Required<Omit<CompressOptions, "turbo">> & {
    turbo?: boolean;
};
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