/**
 * Runtime-agnostic HTTP client using the global fetch API.
 * No Node.js built-in imports — works in any environment with global fetch.
 */
export declare class HttpError extends Error {
    readonly status: number;
    readonly statusText: string;
    readonly url: string;
    /** Retry-After header value (when present on 429 responses). */
    readonly retryAfter: string | null;
    constructor(status: number, statusText: string, url: string, retryAfter?: string | null);
    get isRetryable(): boolean;
}
interface RetryOptions {
    maxRetries?: number | undefined;
    retryDelay?: number | undefined;
}
export interface HttpGetOptions extends RetryOptions {
    headers?: Record<string, string>;
    timeout?: number;
    params?: Record<string, string>;
}
export interface HttpPostJsonOptions extends RetryOptions {
    headers?: Record<string, string>;
    timeout?: number;
}
export declare function httpGetText(url: string, options?: HttpGetOptions): Promise<string>;
export declare function httpGetJson<T>(url: string, options?: HttpGetOptions): Promise<T>;
export declare function httpPostJson<T>(url: string, body: unknown, options?: HttpPostJsonOptions): Promise<T>;
export {};
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