/**
 * MathML ↔ OMML Conversion
 *
 * Provides bidirectional conversion between MathML strings and the internal
 * OMML (Office Math Markup Language) model used by the Word module.
 *
 * @stability experimental
 *
 * Coverage: fractions, superscript, subscript, radicals, nary operators
 * (sum/integral/product), delimiters (parentheses/brackets), and matrices.
 */
import type { MathContent } from "../types.js";
/**
 * Convert OMML model content to a MathML string.
 *
 * @param content - Array of MathContent nodes from the OMML model
 * @returns A complete MathML string wrapped in `<math>` element
 *
 * @stability experimental
 */
export declare function ommlToMathML(content: readonly MathContent[]): string;
/**
 * Convert a MathML string to OMML model content.
 *
 * @param mathml - A MathML string (with or without the outer `<math>` wrapper)
 * @returns Array of MathContent nodes for the OMML model
 *
 * @stability experimental
 */
export declare function mathMLToOmml(mathml: string): MathContent[];