import { MathNode } from '../core/document-model/index.js';
import { TextRun } from './content.js';
/** A matrix found on the page: what to draw, where, and which runs it used. */
export interface MathBlock {
    /** The math object — a row of delimiters and whatever stands between them. */
    readonly math: MathNode;
    /** The top baseline it was drawn on, for ordering the page's blocks. */
    readonly top: number;
    /** Where it stands across the page. */
    readonly x: number;
    readonly width: number;
    /** The runs it consumed, which the prose reading must not read again. */
    readonly used: ReadonlySet<TextRun>;
}
/**
 * The matrices a page's rows hold (§22.1.2.68 `m:m`).
 *
 * @param runs     The column's runs.
 * @param fontSize The text's own size, which says how far apart the lines of
 *                 PROSE stand — a display's sub-lines stand closer.
 * @returns One entry per matrix found, in page order.
 */
export declare function matrixBlocks(runs: ReadonlyArray<TextRun>, fontSize: number): Array<MathBlock>;