/**
 * Phase C8 — HTTP transport for the TagadaPay SDK.
 *
 * Talks to `/api/tagadapay/v1/*` on the Hub (or any deployment that
 * exposes the same routes). Authentication is a bearer token stored
 * in `tp_api_keys`.
 *
 * Keep this file free of any node-only deps so it can run in any JS
 * runtime (Node, edge, Deno, browser). We rely on global `fetch` only.
 */
import type { ClientTransport } from './client.js';
export interface HttpTransportConfig {
    /** Secret API key — must start with tp_sk_live_/tp_sk_test_. */
    apiKey: string;
    /** Base URL of the Hub deployment exposing /api/tagadapay/v1. */
    baseUrl: string;
    /** API pinned version — sent as `TagadaPay-Version`. */
    apiVersion?: string;
    /** Pluggable fetch (tests). Defaults to global fetch. */
    fetchImpl?: typeof fetch;
}
export declare function createHttpTransport(config: HttpTransportConfig): ClientTransport;
export declare class TagadaPayApiError extends Error {
    code: string;
    statusCode: number;
    constructor(code: string, message: string, statusCode: number);
}
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