/**
 * Safe narrowing of unknown event payloads into AnalyticsQualityScore.
 */
import type { AnalyticsQualityScore } from "../types/index.js";
/**
 * Convert an unknown quality-score payload into AnalyticsQualityScore.
 * Returns undefined for missing, null, or malformed values.
 */
export declare function parseAnalyticsQualityScore(value: unknown): AnalyticsQualityScore | undefined;