export type ProxyResponseBodyFailure = "invalid-content-length" | "invalid-utf8" | "too-large" | "too-many-chunks";
export declare class ProxyResponseBodyError extends Error {
    readonly failure: ProxyResponseBodyFailure;
    constructor(failure: ProxyResponseBodyFailure);
}
/**
 * Discard a response while retaining producer ownership until cancellation
 * itself settles. Admission-controlled producers must await this operation
 * before releasing capacity.
 */
export declare function settleProxyResponseBody(response: Response): Promise<void>;
/**
 * Read one upstream response into a bounded contiguous byte snapshot.
 *
 * Both declared and streamed sizes are enforced. Chunk count is bounded
 * separately so an adversarial one-byte/zero-byte stream cannot turn a modest
 * byte limit into unbounded scheduling and allocation work.
 */
export declare function readProxyResponseBytes(response: Response, maxBytes: number, signal?: AbortSignal): Promise<Uint8Array<ArrayBuffer>>;
export declare function readProxyResponseText(response: Response, maxBytes: number, signal?: AbortSignal): Promise<string>;
export declare function readProxyResponseJson(response: Response, maxBytes: number, signal?: AbortSignal): Promise<unknown>;
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