/** Default framework body limit: 1 MiB. */
export declare const DEFAULT_BODY_LIMIT = 1048576;
/**
 * TransformStream that counts bytes and errors with PayloadTooLargeException
 * once `limit` is exceeded. Throwing inside transform() errors both sides:
 * the readable rejects the consumer (req.json()/req.text()/formData()), the
 * writable cancels the source stream.
 */
export declare function countingLimitStream(limit: number): TransformStream<Uint8Array, Uint8Array>;
/**
 * Re-wraps a Request whose body has no Content-Length (chunked) so its body
 * stream errors past `ceiling` bytes. CL-framed requests are returned as-is:
 * the runtime enforces Content-Length framing and the per-route check rejects
 * oversized declared lengths. Used by Miia.listen()'s Deno branch, where the
 * runtime has no native body size limit.
 */
export declare function applyBodyCeiling(req: Request, ceiling: number): Request;
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