/**
 * Rule that validates heading levels (h1-h6) are not skipped.
 *
 * Ensures that heading elements appear in a sequential order without
 * gaps (e.g., an h4 must not follow an h2 directly without an h3 in between).
 */
declare const _default: Readonly<import("@markuplint/ml-core").RuleSeed<boolean, null>>;
export default _default;