/**
 * Configuration options for the required-h1 rule.
 */
export interface Options {
    /** Whether to report a violation when more than one `<h1>` element is found. */
    'expected-once': boolean;
    /** Whether to apply this rule in document fragments (components, partials). */
    'in-document-fragment': boolean;
}
/**
 * Rule that requires exactly one `<h1>` element in the document.
 *
 * Reports a violation when no `<h1>` is present. Optionally reports when
 * multiple `<h1>` elements exist (controlled by `expected-once`). Can be
 * configured to skip document fragments via the `in-document-fragment` option.
 */
declare const _default: Readonly<import("@markuplint/ml-core").RuleSeed<boolean, Options>>;
export default _default;