/** Maximum size of the active plugin log before its single backup rotates in. */
export declare const DEFAULT_LOG_BYTES: number;
/** Retention hygiene keeps one backup generation and no numbered chain. */
export declare const DEFAULT_LOG_GENERATIONS = 1;
import { resolveAftLogPath, resolveAftStorageRoot } from "./storage-paths.js";
export { resolveAftLogPath, resolveAftStorageRoot };
export interface RotatingLogOptions {
    maxBytes?: number;
    generations?: number;
}
/**
 * Asynchronous append-only sink with bounded size rotation.
 *
 * Callers only enqueue strings; directory creation, stat, append, and rename
 * operations run on a serialized promise chain outside the logging hot path.
 */
export declare class RotatingLogSink {
    readonly path: string;
    private readonly maxBytes;
    private readonly generations;
    private estimatedBytes;
    private queue;
    private disabled;
    private failureReported;
    constructor(path: string, options?: RotatingLogOptions);
    append(data: string): void;
    /** Wait for queued writes. Intended for shutdown hooks and tests. */
    drain(): Promise<void>;
    private write;
    private rotate;
}
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