export interface ApiResponseEnvelope<T> {
    data?: T;
    message?: string;
    success?: boolean;
}
export interface PaymentRequestConfig {
    baseURL: string;
    tenant?: string;
    getHeaders?: () => Record<string, string> | Promise<Record<string, string>>;
    credentials?: RequestCredentials;
    fetchImpl?: typeof fetch;
}
export declare function joinPaymentUrl(baseURL: string, path: string): string;
export declare function parseApiEnvelope<T>(raw: unknown): ApiResponseEnvelope<T>;
export declare function unwrapList<T>(data: unknown): T[];
export declare function unwrapOne<T>(data: unknown): T | null;
export declare function createPaymentRequest(config: PaymentRequestConfig): (path: string, init: RequestInit & {
    json?: unknown;
}) => Promise<ApiResponseEnvelope<unknown>>;
//# sourceMappingURL=paymentRequest.d.ts.map