import type { Readable } from "node:stream";
/** Serialize one LF-delimited JSON record. */
export declare function serializeJsonLine(value: object | boolean | null | number | string): string;
export interface JsonlReaderOptions {
    maxBytesPerTurn?: number;
    maxLinesPerTurn?: number;
    /**
     * Called once the stream has ended AND every buffered frame has been parsed.
     * A reader that yields between turns can still hold unparsed frames long
     * after the process exited, so callers that must not act before the last
     * frame is delivered wait for this instead of the exit event.
     */
    onDrained?: () => void;
}
/**
 * Attach a strict LF-only JSONL reader.
 *
 * The stream is paused before queued chunks are drained, so one turn cannot parse
 * an unbounded number of frames.
 */
export declare function attachJsonlLineReader(stream: Readable, onLine: (line: string) => void, options?: JsonlReaderOptions): () => void;
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