import { Node } from 'prosemirror-model';
export type Heading = {
    title: string;
    level: number;
    id: string;
};
export type GetHeadingsOptions = {
    selectedChannelId?: string;
};
/**
 * Extracts all headings from a ProseMirror document.
 * Returns an array of heading objects with title, level, and unique id.
 *
 * @param doc ProseMirror document node
 * @returns Array of Heading objects
 */
export declare function getHeadings(doc: Node, options?: GetHeadingsOptions): Heading[];
/**
 * Compares two heading arrays for equality.
 * Used to avoid unnecessary callbacks when headings haven't changed.
 */
export declare function headingsEqual(a: Heading[], b: Heading[]): boolean;