import { Transform, type TransformCallback } from 'node:stream';
export declare const DEFAULT_MAX_JSONL_FRAME_BYTES: number;
export declare class BoundedLineTransform extends Transform {
    private readonly maxLineBytes;
    private readonly source;
    private bytesSinceNewline;
    constructor(maxLineBytes?: number, source?: string);
    _transform(chunk: Buffer | string, encoding: BufferEncoding, callback: TransformCallback): void;
}
export declare function assertBoundedSerializedFrame(serializedFrame: string, maxFrameBytes?: number, source?: string, inputMessageUuid?: string): void;