import { MathNode } from '../core/document-model/index.js';
import { PoNode } from '../core/po-helpers.js';
/**
 * Parse an `<m:oMath>` subtree (ECMA-376 Part 1 §22) into a recursive
 * {@link MathNode}. Coverage grows by milestone; unrecognized constructs degrade
 * by recursing into their content so any literal symbols still surface.
 *
 * @param oMath The `m:oMath` PoNode.
 * @returns A `row` node wrapping the parsed content.
 */
export declare function parseOMath(oMath: PoNode): MathNode;
/**
 * Collect a named child element's content as a `row` node (`m:num`, `m:den`,
 * `m:e`, …). Returns an empty row when the child is absent.
 *
 * @param parent The enclosing math element.
 * @param tag    The child element's qualified tag.
 */
export declare function childRow(parent: PoNode, tag: string): MathNode;