/**
 * NDJSON Line Buffer
 *
 * Accumulates raw TCP/socket data and emits complete JSON lines.
 * Handles partial lines across `data` events. Used by both the
 * Unix socket server transport and client transport.
 *
 * Protocol: JSON.stringify escapes internal newlines, so raw \n
 * is an unambiguous message delimiter.
 */
export declare class LineBuffer {
    private buffer;
    /** Feed raw data, returns array of complete lines */
    feed(chunk: string): string[];
}
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