export interface SerializedRouteResponse {
    readonly status: number;
    readonly statusText: string;
    readonly headers: Array<[string, string]>;
    readonly body: Uint8Array | null;
}
/** Maximum response body buffered for transfer out of an isolated route worker. */
export declare const MAX_WORKER_RESPONSE_BODY_BYTES: number;
/** Maximum response headers transferred out of an isolated route worker. */
export declare const MAX_WORKER_RESPONSE_HEADERS = 256;
/**
 * Accept only the realm's intrinsic Promise objects from route handlers.
 * Arbitrary thenables and Promise proxies are response candidates, not code
 * execution hooks, and will be rejected by the Response boundary.
 */
export declare function isTrustedRouteResponsePromise(value: unknown): value is Promise<unknown>;
/**
 * Normalize a genuine Response into a framework-owned native Response.
 * Response-shaped objects and constructor lookalikes are rejected.
 */
export declare function normalizeRouteResponse(value: unknown): Response;
/** Normalize response metadata for HEAD without consuming or retaining its body. */
export declare function normalizeRouteHeadResponse(value: unknown): Response;
/**
 * Snapshot a genuine route Response for worker transfer using captured native
 * methods. HEAD responses never consume the handler's body.
 */
export declare function serializeRouteResponse(value: unknown, requestMethod?: string): Promise<SerializedRouteResponse>;
/**
 * Reconstruct a worker-transferred response after validating its data-only
 * shape. Status zero is rejected because it is not serializable over HTTP.
 */
export declare function deserializeRouteResponse(value: unknown): Response;
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