import type { Composite } from './types.js';
/**
 * Stage 2 — Reading Order: order composites the way a human reads the page.
 * Single column: top to bottom. Multi-column: column by column left to right,
 * top to bottom within each column.
 *
 * INVARIANT: the output is a permutation of the input. Column detection
 * accounts for every composite (see detectReadingOrderColumns), so ordering
 * can never lose text — only arrange it.
 */
export declare function orderComposites(composites: Composite[]): Composite[];
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