type IIIFTileSourceLike = {
    _id?: string;
    width?: number;
    height?: number;
    version?: number;
    tileFormat?: string;
    emulateLegacyImagePyramid?: boolean;
    levelSizes?: Array<{
        width: number;
        height: number;
    }>;
    getTileWidth: (level: number) => number;
    getTileHeight: (level: number) => number;
    getTileUrl: (level: number, x: number, y: number) => string;
};
type OpenSeadragonWithIIIF = {
    IIIFTileSource?: {
        prototype?: IIIFTileSourceLike & Record<PropertyKey, unknown>;
    };
};
/**
 * OSD 6.0.2 treats a listed IIIF size as a single-image level only when both
 * dimensions are strictly smaller than the tile dimensions. If one dimension
 * exactly equals its tile dimension, OSD can request only part of the source
 * image. See Wellcome b18035978 canvas 6 (628 x 1024 at a 1024 x 1024 level).
 */
export declare const applyIIIFExactTileLevelWorkaround: (OpenSeadragonClass: OpenSeadragonWithIIIF) => void;
export {};