/**
 * Truncate `tree` to a certain comment.
 *
 * @template {Nodes} Tree
 *   Tree kind.
 * @param {Tree} tree
 *   Tree to truncate.
 * @param {Readonly<Options> | null | undefined} [options]
 *   Configuration (optional).
 * @returns {Tree | undefined}
 *   Truncated clone of `tree` when a comment is found, `undefined` otherwise.
 */
export function excerpt<Tree extends import("hast").Nodes>(tree: Tree, options?: Readonly<Options> | null | undefined): Tree | undefined;
export type Nodes = import('hast').Nodes;
export type RootContent = import('hast').RootContent;
/**
 * Configuration.
 */
export type Options = {
    /**
     * Comment value to search for (default: `'more'`).
     */
    comment?: string | null | undefined;
    /**
     * Nodes to exclude from the resulting tree (default: `[]`).
     *
     * These are not counted towards `size`.
     */
    ignore?: Array<RootContent> | null | undefined;
    /**
     * How far to search for the comment before bailing (default: `2048`).
     *
     * The goal of this project is to find user-defined explicit excerpts, that
     * are assumed to be somewhat reasonably placed.
     * This option prevents searching giant documents for some comment that
     * probably won’t be found at the end.
     */
    maxSearchSize?: number | null | undefined;
};