/**
 * Shape id → the relationship id of its `v:imagedata`, for every shape in a
 * legacy VML drawing part that has one.
 *
 * @param data The raw `vmlDrawing#.vml` bytes.
 * @returns The map, keyed by shape id with the `_x0000_s` prefix stripped.
 */
export declare function parseVmlImageRels(data: Uint8Array): Map<string, string>;
/** Strip the `_x0000_s` prefix a VML shape id carries, so both spellings meet. */
export declare function normalizeSpid(id: string): string;