import type { DesignDocument, DocumentDiagnostic } from './contracts.js';
export declare const DOCUMENT_PAGES_KEY = "pages";
export declare const IMPLICIT_DOCUMENT_PAGE_ID = "page:default";
export interface DocumentPage {
    id: string;
    name: string;
    rootIds: readonly string[];
    background?: string;
    opacity?: number;
}
export interface DocumentPagesMetadata {
    version: 1;
    pages: readonly DocumentPage[];
}
/** Page membership partitions ordinary root children; component definitions remain shared. */
export declare function documentPageDiagnostics(document: DesignDocument): DocumentDiagnostic[];