import type { IncomingMessage } from 'node:http';
type BodyReadResult = {
    ok: true;
    body: Buffer;
} | {
    ok: false;
    reason: 'too_large' | 'read_error';
};
/**
 * Reads the request body up to `maxBytes`.
 *
 * A socket error is reported as `read_error`, NOT as `too_large`. The failure type had only one
 * member, so the error path was forced to claim the body exceeded the limit — a client that
 * disconnected mid-upload, or any transport fault, was recorded and answered as an oversized
 * payload. That is the same misattribution the envelope layer removed when it split cancellation
 * out of `error`: a cause the operator did not have is worse than no cause at all.
 * If the body exceeds `maxBytes`, drains remaining data and resolves with
 * { ok: false, reason: 'too_large' } so the server can still send a 413 response
 * before closing the connection.
 */
export declare function readBody(req: IncomingMessage, maxBytes: number): Promise<BodyReadResult>;
export {};
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