export type LogLevel = 'debug' | 'info' | 'warn' | 'error';
export interface ObservabilityEvent {
    ts?: number;
    level?: LogLevel;
    event: string;
    traceId?: string;
    spanId?: string;
    sessionId?: string;
    data?: Record<string, unknown>;
}
/** 日志传输层接口 */
export type LogTransport = (payload: Required<Pick<ObservabilityEvent, 'ts' | 'level'>> & ObservabilityEvent) => void;
/** 设置自定义日志传输层 */
export declare function setLogTransport(transport: LogTransport): void;
/** 记录可观测性事件 */
export declare function logEvent(input: ObservabilityEvent): void;
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