import { PurchasesOfferings } from '../revenuecat-types';
import { CustomerInfo, PurchaseSuccessResult, PurchasesConfig } from '../types';
declare class PurchasesService {
    private adapter;
    private initializationPromise;
    private stripePresenter;
    private config;
    private logEvent;
    private createError;
    private selectAdapter;
    /**
     * Initialize the purchases service
     * This is idempotent - multiple calls are safe
     * @param config - Optional configuration object
     * @param config.debug - Enable debug logging (default: false)
     */
    initialize(config?: PurchasesConfig): Promise<void>;
    private _doInitialize;
    private ensureInitialized;
    /**
     * Get current offerings
     */
    getOfferings(): PurchasesOfferings;
    /**
     * Get current customer info
     */
    getCustomerInfo(): CustomerInfo | null;
    /**
     * Check if user has premium access
     */
    isPremium(): boolean;
    /**
     * Check if the current user is anonymous
     */
    isAnonymous(): boolean;
    /**
     * Get current user ID
     */
    getUserId(): string | null;
    /**
     * Subscribe to state changes
     */
    subscribe(listener: (state: any) => void): () => void;
    /**
     * Refresh customer info from backend
     */
    refreshCustomerInfo(): Promise<CustomerInfo | null>;
    /**
     * Purchase a package
     */
    purchase(packageId: string, manual?: boolean, basePlanId?: string): Promise<PurchaseSuccessResult>;
    /**
     * Restore purchases (native only)
     */
    restore(): Promise<CustomerInfo | null>;
    /**
     * Get manage subscription URL
     */
    getManageSubscriptionUrl(): Promise<string>;
    /**
     * Log in with a new user ID
     * If the current user is anonymous, this will alias (merge) them with the new user
     */
    logIn(newUserId: string): Promise<CustomerInfo | null>;
    /**
     * Log out current user
     */
    logOut(): Promise<void>;
    /**
     * Auto-sync receipts in the background (called during initialization)
     * This ensures the backend always has the latest purchase state
     */
    private autoSyncReceipts;
    /**
     * Register a Stripe presenter component (for backward compatibility)
     */
    registerStripePresenter(presenter: {
        requestPresentation: (request: any) => void;
    } | null): void;
    /**
     * Destroy the service and clean up resources
     */
    destroy(): void;
}
export declare const purchasesService: PurchasesService;
export {};
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