/**
 * Patches an existing response using a MockResponseSchema.
 */
import { MockResponseSchema } from '../protocol';
type RealResponse = {
    status: number;
    headers: Record<string, string>;
    body: string;
};
export type PatchResponseResult = {
    status: number;
    headers: Record<string, string>;
    body: string | null;
};
/**
 * Applies a MockResponseSchema's patches onto an already-received response.
 * Pure function — no side effects, no network, no Node.js APIs.
 */
export declare function patchResponse(resSchema: MockResponseSchema, realResponse: RealResponse, params?: Record<string, string>): PatchResponseResult;
export {};
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