/** Request options the domain needs from an HTTP call. */
export interface HttpRequestInit {
    method?: string;
    headers?: Record<string, string>;
    body?: string;
    signal?: AbortSignal;
}
/** Performs one HTTP request and resolves to a Response. */
export type HttpPort = (url: string, init?: HttpRequestInit) => Promise<Response>;
/** Production adapter over the global fetch (Node 18+). */
export declare const fetchHttpAdapter: HttpPort;
/** Whether a usable global fetch exists. Lets callers keep their
 *  "no fetch available → give up" path without touching globalThis directly. */
export declare function hasGlobalFetch(): boolean;
/**
 * Read a `Response` body with a hard size cap. Stops streaming as soon as
 * the cumulative bytes exceed `max` and cancels the reader — defence in
 * depth against an upstream (or a hijacked endpoint) that returns an
 * unbounded payload. Falls back to `text()` only when the platform doesn't
 * expose a readable stream on the response (rare).
 */
export declare function readBodyCapped(res: Response, max: number): Promise<{
    text: string;
    tooLarge: boolean;
}>;