import { Diagnostic, Rule } from "@siteimprove/alfa-act";
import type { Element } from "@siteimprove/alfa-dom";
import { Err, Ok } from "@siteimprove/alfa-result";
import type { Page } from "@siteimprove/alfa-web";
import type { Question } from "../common/act/question.ts";
declare const _default: Rule.Composite<Page, Element<string>, Question.Metadata, Element<string>>;
export default _default;
/**
 * @public
 */
export declare namespace Outcomes {
    const HasAlternative: Ok<Diagnostic>;
    const HasNoAlternative: Err<Diagnostic>;
}
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