import { MathObjectConverter } from '../types.js';
/**
 * Convert m:sSubSup (sub-superscript) to MathML <msubsup>.
 *
 * OMML structure:
 *   m:sSubSup → m:sSubSupPr (optional), m:e (base), m:sub (subscript), m:sup (superscript)
 *
 * MathML output:
 *   <msubsup> <mrow>base</mrow> <mrow>sub</mrow> <mrow>sup</mrow> </msubsup>
 *
 * @spec ECMA-376 §22.1.2.103
 */
export declare const convertSubSuperscript: MathObjectConverter;
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