import type { ParsedPage, RuleResult } from "../../types.js";
/**
 * tech/og-completeness — flags pages missing the core Open Graph metadata
 * that drives social-share previews and is increasingly used by AI Overviews
 * as a fallback summary signal.
 *
 * Required: og:title, og:description, og:image.
 *
 * Severity gradation:
 *   - warning: og:title or og:description is missing (core social-card identity
 *              fields that affect how a link appears in feeds and AI summaries).
 *   - info:    only og:image is missing (cosmetic — the card still has a title
 *              and description; the missing image is low-priority).
 *
 * Presence check: a field is considered MISSING when it is absent, empty, or
 * whitespace-only (value is trimmed before evaluation).
 */
export declare function ogCompletenessRule(pages: ParsedPage[]): RuleResult[];
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