import type { Authenticatable } from '@atlex/auth';
import type { Application } from '@atlex/core';
import type { RequestHandler } from 'express';
/**
 * Express middleware: reads {@link TEST_AUTH_HEADER} and logs the resolved user into the default guard.
 * Pair with {@link import("../TestClient.js").TestClient.actingAs}.
 *
 * @param app - Application container (resolves `auth`).
 * @param resolveUser - Load an {@link Authenticatable} by primary key string.
 * @returns Express middleware.
 */
export declare function createTestingAuthMiddleware(app: Application, resolveUser: (id: string) => Promise<Authenticatable | null>): RequestHandler;
/**
 * Header name used by {@link createTestingAuthMiddleware} and {@link import("../TestClient.js").TestClient.actingAs}.
 */
export declare const TEST_AUTH_HEADER = "x-atlex-test-auth-id";
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