import type { PageRole, ResolvedDesignElement } from '../types.js';
import type { ContentWarning, VDTPage } from '../vdt.js';
/**
 * `folioMissing` (#1163): among the laid pages of one composed page template
 * and side, a page that draws no folio or running head that most of its
 * siblings draw. The layout records, per composed page, the furniture its
 * running heads and decoration mean to draw there (after the parity, page
 * role and `when` / `unless` filters); this module compares what each page
 * drew with its siblings.
 */
/** Where a furniture element is written. */
export type FurnitureSlot = 'header' | 'footer' | 'decoration';
/** One element a composed page's slots mean to draw on it. */
export interface FurnitureElement {
    slot: FurnitureSlot;
    id: string;
    /** Whether its text holds `{pageNumber}`. */
    folio: boolean;
}
/** What one composed page's running heads and decoration mean to draw. */
export interface PageFurniture {
    pageIndex: number;
    template: string;
    side: 'recto' | 'verso';
    expected: FurnitureElement[];
}
/** The furniture elements of a slot that are drawn on a page: text
 *  elements (of a running head, any; of a decoration, those that read a
 *  running placeholder) that the parity, the page-role filter and the page
 *  fence's `when` / `unless` let draw there (`own`: the attributes an
 *  element reads first, a module's fence, #1189). `pageNumberIndex` is the
 *  index the parity filter reads (`page.index + pageIndexOffset`). */
export declare function expectedFurniture(elements: readonly ResolvedDesignElement[], slot: FurnitureSlot, pageNumberIndex: number, role: PageRole | undefined, attrs: Readonly<Record<string, string>> | undefined, own?: ReadonlyMap<string, Readonly<Record<string, string>>>): FurnitureElement[];
/** The `folioMissing` warnings of a laid document: for each template and
 *  side, an element that at least two pages draw and that more than half
 *  of the other pages meant to draw it do, reported on each page that
 *  meant to draw it and drew nothing. A page whose fence switches the
 *  element off (`when` / `unless`), or whose slot has no such element (a
 *  template with `footer: false`, a styled section's running heads on an
 *  opener), never meant to draw it. */
export declare function folioMissingWarnings(pages: readonly VDTPage[], records: readonly PageFurniture[]): ContentWarning[];
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