/**
 * Google Play Install Referrer Integration
 *
 * Provides Android install attribution via the Google Play Install Referrer API.
 * This captures UTM parameters and click IDs passed through Google Play Store.
 *
 * How it works:
 * 1. User clicks ad/link with UTM parameters
 * 2. Google Play Store stores the referrer URL
 * 3. On first app launch, SDK retrieves the referrer
 * 4. Attribution data (utm_source, utm_medium, gclid, etc.) is extracted
 *
 * Requirements:
 * - Android only (returns null on iOS)
 * - Requires Google Play Install Referrer Library in build.gradle:
 *   implementation 'com.android.installreferrer:installreferrer:2.2'
 *
 * Attribution data captured:
 * - referrer_url: Full referrer URL from Play Store
 * - referrer_click_timestamp: When the referrer link was clicked
 * - install_begin_timestamp: When the install began
 * - gclid: Google Ads click ID (standard)
 * - gbraid: Google Ads privacy-safe click ID (iOS App campaigns)
 * - wbraid: Google Ads privacy-safe click ID (Web-to-App campaigns)
 * - utm_source, utm_medium, utm_campaign, etc.
 */
export interface PlayInstallReferrer {
    referrerUrl: string;
    referrerClickTimestamp: number;
    installBeginTimestamp: number;
    installCompleteTimestamp?: number;
    gclid?: string;
    gbraid?: string;
    wbraid?: string;
    utmSource?: string;
    utmMedium?: string;
    utmCampaign?: string;
    utmTerm?: string;
    utmContent?: string;
    [key: string]: any;
}
/**
 * Google Play Install Referrer Integration
 *
 * Retrieves install attribution data from Google Play Store.
 * Only available on Android.
 */
declare class PlayInstallReferrerIntegration {
    private referrerData;
    private initialized;
    /**
     * Check if Play Install Referrer is available
     */
    isAvailable(): boolean;
    /**
     * Initialize and fetch install referrer data
     * Should be called once on first app launch
     */
    initialize(): Promise<void>;
    /**
     * Fetch install referrer from Play Store
     */
    fetchInstallReferrer(): Promise<PlayInstallReferrer | null>;
    /**
     * Parse referrer URL to extract UTM parameters and click IDs
     */
    private parseReferrerUrl;
    /**
     * Get cached install referrer data
     */
    getReferrerData(): PlayInstallReferrer | null;
    /**
     * Get attribution data in standard format
     */
    getAttributionData(): Record<string, any>;
}
export declare const playInstallReferrerIntegration: PlayInstallReferrerIntegration;
export {};