import type { PaymentProvider } from './provider.interface.js';
/**
 * Register a payment provider.
 */
export declare function registerProvider(provider: PaymentProvider): void;
/**
 * Set the default provider.
 */
export declare function setDefaultProvider(name: string): void;
/**
 * Get a registered provider by name.
 */
export declare function getProvider(name?: string): PaymentProvider;
/**
 * List registered provider names.
 */
export declare function listProviders(): string[];
/**
 * Get the best provider for a given currency.
 */
export declare function getProviderForCurrency(currency: string): PaymentProvider | null;
/**
 * Reset all providers (for testing).
 */
export declare function resetProviders(): void;
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