import type { Response } from 'express-serve-static-core';
export interface ResponseProfile {
    duration?: number;
    endTime?: number;
    startTime?: number;
}
export interface ResponseMetadata extends Record<string, unknown> {
    profile?: ResponseProfile;
}
export interface ResponseLocals extends Record<string, unknown> {
    meta?: ResponseMetadata;
}
/**
 * Extracts response metadata from res.locals, computing profile duration if profiling was started.
 * @param res The Express response to extract metadata from.
 * @returns The metadata record including any profiling information.
 */
export declare const getResponseMetadata: <TLocals extends ResponseLocals>(res: Response<unknown, TLocals>) => Record<string, unknown>;
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