import type { MarkdownDocument } from "./structured-content/markdown.js";
import type { StructuredRenderableBlock } from "./structured-content/types.js";
/** `pub.leaflet.document` — a full Leaflet document whose `pages` match the
 *  `pub.leaflet.content` shape. */
export declare const LEAFLET_DOCUMENT_FORMAT = "pub.leaflet.document";
/**
 * Adapt a `pub.leaflet.document` payload (same `pages` shape as
 * `pub.leaflet.content`) so the leaflet block parser accepts it.
 */
export declare function leafletDocumentContent(content: unknown): unknown;
/** Every third-party block-based content format the structured parser knows. */
export declare const STRUCTURED_BLOCK_FORMATS: string[];
export declare function isStructuredBlockFormat(format: string | null | undefined): boolean;
/**
 * Renderable blocks for any supported block-based third-party format, or null
 * when `format` isn't one of them.
 */
/**
 * Blocks *and* footnotes for a supported format.
 *
 * Only the markdown-derived formats produce footnotes; everything else returns
 * an empty list, so callers have one shape to handle. `structuredFormatBlocks`
 * stays for consumers that only want blocks.
 */
export declare function structuredFormatDocument(content: unknown, contentFormat?: string | null): MarkdownDocument | null;
export declare function structuredFormatBlocks(content: unknown, contentFormat?: string | null): Array<StructuredRenderableBlock> | null;
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