import { EventEmitter } from 'events';
/**
 * Event name constants for NDJsonStreamParser
 */
export declare const STREAM_EVENTS: {
    readonly EVENT_RECORD: "event_record";
    readonly HEARTBEAT_REQUEST: "heartbeat_request";
    readonly DATA: "data";
    readonly FINISHED: "finished";
    readonly FAILED: "failed";
    readonly CANCELLED: "cancelled";
    readonly TIMED_OUT: "timed_out";
    readonly SCANNED_MAX: "scanned_max";
    readonly QUERY_TOO_LARGE: "query_too_large";
    readonly UNKNOWN_STATE: "unknown-state";
    readonly PARSE_ERROR: "parse_error";
};
/**
 * Parses newline-delimited JSON stream responses
 */
export declare class NDJsonStreamParser extends EventEmitter {
    private buffer;
    processChunk(chunk: Buffer): void;
    finalize(): void;
    private parseJsonLine;
}
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