import type { LruBlobStore } from "./blob-store.js";
/**
 * Serialize one event to a single wire-format JSON line (no trailing newline).
 * When `blobStore` is given, byte buffers in the payload are offloaded to it and
 * replaced by pointers; otherwise they degrade to `[Bytes n]` markers.
 */
export declare function serializeEvent(event: string, payload?: unknown, metadata?: Record<string, unknown>, blobStore?: LruBlobStore): string;
/**
 * Serialize one stdout/stderr line to a wire-format `log` frame (no trailing
 * newline). Log lines are plain text, so unlike {@link serializeEvent} there is
 * no payload to reduce — the line travels verbatim, ANSI escapes intact.
 */
export declare function serializeLog(stream: "stdout" | "stderr", line: string): string;
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