/** Debug-only operational metadata. Message bodies are never captured here. */
export declare class Logger {
    readonly enabled: boolean;
    private readonly directory;
    constructor(enabled: boolean);
    private write;
    info(message: string, data?: unknown): Promise<void>;
    debug(message: string, data?: unknown): Promise<void>;
    warn(message: string, data?: unknown): Promise<void>;
    error(message: string, data?: unknown): Promise<void>;
}
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