import { type ApiVersion } from "../config/index.js";
import { type GetCredentialsOptions, type MeritCredentials } from "./auth.js";
export interface MeritCallOptions {
    /** Override the default API version for this endpoint ("v1" | "v2"). */
    version?: ApiVersion;
    /** HTTP method. Defaults to POST (Merit takes a JSON body even for queries). */
    method?: "GET" | "POST";
    /** Request payload. Serialized to compact JSON, signed, and sent verbatim. */
    body?: unknown;
}
export declare class MeritClient {
    private readonly creds;
    private readonly baseUrl;
    constructor(creds: MeritCredentials, baseUrl?: string);
    /**
     * Call a Merit endpoint by its bare path (e.g. "getinvoices"). Returns the
     * parsed JSON response, the raw string for non-JSON bodies, or null for an
     * empty body. Throws RateLimitError / ApiError on failure.
     */
    call<T = unknown>(apiPath: string, opts?: MeritCallOptions): Promise<T>;
}
/** Resolve credentials and return a process-cached MeritClient. */
export declare function getClient(opts?: GetCredentialsOptions): Promise<MeritClient>;
/**
 * Resolve Merit Palk credentials and return a process-cached MeritClient pointed
 * at the Palk host. Palk is v1-only and Estonia-only, so version/localization
 * are fixed; the signing scheme is identical to Aktiva, so MeritClient is reused.
 */
export declare function getPalkClient(opts?: GetCredentialsOptions): Promise<MeritClient>;