import type { Request, Response } from 'express';
/**
 * Per-request store for `response()` and `request()` helpers.
 */
export interface HttpContextStore {
    /** Current Express request. */
    req: Request;
    /** Current Express response. */
    res: Response;
}
/**
 * Run a callback with HTTP context active (used by {@link Application.boot} middleware).
 *
 * @param store - Request and response for this request.
 * @param fn - Synchronous entry; async work inside must be scheduled from this turn to keep ALS.
 * @returns The callback return value.
 */
export declare function runWithHttpContext<T>(store: HttpContextStore, fn: () => T): T;
/**
 * Current request/response pair, or `undefined` outside the HTTP middleware stack.
 */
export declare function tryGetHttpContext(): HttpContextStore | undefined;
/**
 * @throws Error when called outside an active HTTP context (e.g. before {@link Application.boot} or without passing `res` to {@link response}).
 */
export declare function getHttpContext(): HttpContextStore;
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