/**
 * Feature flag + A/B test detector.
 *
 * Detects popular feature flag / experiment SDKs loaded on the page:
 * LaunchDarkly, Optimizely, Split.io, Unleash, GrowthBook, Statsig, Flagsmith, Amplitude Experiment.
 *
 * Also detects common A/B test patterns: data-testid attributes, gtm.js experiment layers,
 * Optimizely variation IDs, VWO, etc.
 *
 * Why: ZeTa needs to know when a page shows different content to different users
 * so test generation can account for variants and not generate flaky tests.
 */
import type { Page } from 'playwright';
export interface FeatureFlagInfo {
    sdk: string;
    confidence: 'high' | 'medium' | 'low';
    details?: string;
}
export interface AbTestInfo {
    tool: string;
    experiments?: string[];
}
export interface FeatureFlagDetectionResult {
    url: string;
    flagSdks: FeatureFlagInfo[];
    abTools: AbTestInfo[];
    hasAnyFlags: boolean;
    detectedAt: string;
}
export declare function detectFeatureFlags(page: Page, url: string): Promise<FeatureFlagDetectionResult>;