/**
 * Page role classification. Runs once after placement (at the top of
 * `buildHeadersAndFooters`) and stamps `page.role` so design slots can filter
 * elements per page kind (`DesignElement.pages`).
 *
 * Roles, in precedence order:
 *  - `'blank'`  — parity / force-blank padding pages;
 *  - `'part'`   — part-divider pages (`page.partInfo` set), even when the
 *                 body column is empty (the opener design is the content);
 *  - `'comic'`  — a comic page (`page.comic` set, `:::page`);
 *  - `'composed'` — a composed page (`page.composed` set, `::::page`);
 *  - `'blank'`  — any other page with no content at all (no column blocks
 *                 and no floats);
 *  - `'opener'` — the first block in reading order is a heading whose level
 *                 spans the page or forces a page break before it: the
 *                 first page of a chapter;
 *  - `'body'`   — everything else.
 */
import type { PageRole } from '../types.js';
import type { ResolvedConfig, VDTDocument, VDTPage } from '../vdt.js';
import { type HeadingLevelResolver } from './headingStyles.js';
/** Classify one page. Pure — does not mutate the page. */
export declare function classifyPage(page: VDTPage, resolved: ResolvedConfig, levels?: HeadingLevelResolver): PageRole;
/** Stamp `page.role` on every page of `doc`. */
export declare function classifyPages(doc: VDTDocument, resolved?: ResolvedConfig): void;
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