import type { NoindexResult, RuleInput } from '../types.js';
/**
 * Detects noindex directives on the page.
 *
 * Checks:
 * 1. <meta name="robots" content="noindex,...">
 * 2. <meta name="googlebot" content="noindex,...">
 * 3. X-Robots-Tag: noindex response header (if responseHeaders provided)
 *
 * Pass: no noindex directive found
 * Fail: noindex directive found (blocks indexing in production)
 */
export declare function checkNoindex(input: RuleInput): NoindexResult;
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