/**
 * One entry point for every body-shaped argument.
 *
 * Callers hand us markdown, HTML, or a ready-made ProseMirror document, and
 * usually do not say which. Sniffing beats making every tool take a `format`
 * argument the model has to reason about and will sometimes get wrong.
 *
 * Order matters: a JSON document is unambiguous, HTML is detectable by its
 * tags, and markdown is the fallback because it is also what plain text is.
 */
import { docToMarkdown } from "./to-markdown.js";
import { type PMDoc } from "./prosemirror.js";
export type BodyFormat = "markdown" | "html" | "prosemirror" | "auto";
export declare function detectFormat(input: string): Exclude<BodyFormat, "auto">;
/**
 * Build a Substack document from whatever the caller sent.
 *
 * Throws on an invalid ProseMirror document rather than letting a bad node name
 * reach Substack, which would accept it and render the post wrong with no error.
 */
export declare function toDoc(input: string, format?: BodyFormat): PMDoc;
/** The JSON string Substack's `draft_body` field expects. */
export declare function toDraftBody(input: string, format?: BodyFormat): string;
/** Read a `draft_body` back as markdown, for editing. */
export declare function draftBodyToMarkdown(raw: unknown): string;
export { docToMarkdown };