type LogLevel = "debug" | "info" | "warn" | "error";
type LogWriterRef = {
    event?: (e: {
        runId: string;
        level: LogLevel;
        message: string;
        data?: Record<string, unknown>;
    }) => void;
} | null;
export declare function setLogLevel(level: LogLevel): void;
export declare function attachLogWriter(writer: LogWriterRef): void;
export declare const logger: {
    debug: (msg: string, data?: Record<string, unknown>) => void;
    info: (msg: string, data?: Record<string, unknown>) => void;
    warn: (msg: string, data?: Record<string, unknown>) => void;
    error: (msg: string, data?: Record<string, unknown>) => void;
};
export {};
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