/**
 * Re-emits the SVG with explicit `width`/`height` attributes set to the
 * sanitized size, so the `<canvas>` rasterization renders it at a reliable
 * intrinsic size across browsers. The whole document is serialized, so
 * comments outside the root element survive.
 */
export declare function ensureSize(svg: string, size?: number): {
    svg: string;
    size: number;
};
/**
 * Brings the `mask-type` presentation attribute in line with a `style`
 * declaration of the same property, for callers that drive a rasterizer
 * reading only the attribute. Same contract as the node implementation in
 * `svg.ts`, where the precedence rules are documented: input that needs no
 * change, including input the parser rejects, comes back verbatim.
 */
export declare function normalizeMaskType(svg: string): string;