/**
 * Decode a response body honoring the declared charset (Content-Type header,
 * then, for HTML or untyped bodies, a cheap <meta charset> sniff), falling
 * back to UTF-8.
 */
export declare function decodeBody(bytes: Buffer, contentTypeHeader: string): string;
/**
 * Read a response body up to `maxBytes`, stopping once the cap is crossed.
 * `bytes` never exceeds the cap; `truncated` reports whether the body was cut
 * mid-stream. Returns `null` when the response carries no readable body.
 */
export declare function readBodyCapped(response: Response, maxBytes: number): Promise<{
    bytes: Buffer;
    truncated: boolean;
} | null>;