/**
 * Byline wrapper around the upstream `HorizontalRuleExtension`. Adds a
 * single insert-menu contribution; the underlying extension still owns
 * the node registration and command behaviour.
 */
export declare const HorizontalRuleExtension: import("lexical").LexicalExtension<import("lexical").ExtensionConfigBase, "@byline/richtext-lexical/HorizontalRule", unknown, unknown>;
