export interface MediaFingerprint {
    sha256: string;
    byteLength: number;
    mimeType?: string;
}
export declare function fingerprintMedia(data: Uint8Array, mimeType?: string): MediaFingerprint;
export declare function extractCssColors(value: string): string[];
export declare function rankColorSamples(samples: readonly string[], limit?: number): string[];
export declare function extractDominantColors(data: Uint8Array, limit?: number): Promise<string[]>;
export interface CroppedImageRegion {
    data: Uint8Array;
    mimeType: "image/png";
    width: number;
    height: number;
}
export declare function compareRasterImages(input: {
    source: Uint8Array;
    rendered: Uint8Array;
    maxInputBytes?: number;
}): Promise<{
    meanAbsoluteDifference: number;
    width: number;
    height: number;
}>;
/** Crops a bounded raster region without retaining the source image. */
export declare function cropImageRegion(input: {
    data: Uint8Array;
    left: number;
    top: number;
    width: number;
    height: number;
    maxInputBytes?: number;
    maxOutputPixels?: number;
}): Promise<CroppedImageRegion>;
export declare function readBoundedResponseBytes(response: Response, maxBytes: number): Promise<Uint8Array>;
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