type HttpHeadersResolver = () => Record<string, string> | Promise<Record<string, string>> | undefined;
interface HttpClientConfig {
    /** Base URL for all requests */
    baseUrl: string;
    /** Default headers applied to every request */
    headers?: Record<string, string>;
    /** Optional lazy header resolver invoked before each request */
    resolveHeaders?: HttpHeadersResolver;
    /** Request timeout in ms (default: 30000) */
    timeout?: number;
    /** Enable automatic retry on 429 and 5xx (default: true) */
    retryOnError?: boolean;
    /** Maximum retry attempts (default: 5) */
    retryLimit?: number;
    /** Initial delay between retries in ms (default: 300) */
    retryDelay?: number;
    /** Custom fetch implementation (for testing) */
    fetch?: typeof globalThis.fetch;
}
interface HttpResponse<T> {
    data: T;
    status: number;
    headers: Headers;
}

export type { HttpClientConfig as H, HttpResponse as a };