import { SLSLogger, SLSOptions } from './types';
/**
 * Common methods of packaging aliyun SLS log service
 */
export declare class Logger implements SLSLogger {
    private readonly topic;
    private readonly options;
    private logger;
    constructor(topic: string, options: SLSOptions);
    /**
     * processing sls log
     */
    private handle;
    log(value: string, source?: string): Promise<void>;
    info(value: string, source?: string): Promise<void>;
    error(value: string, source?: string): Promise<void>;
    debug(value: string, source?: string): Promise<void>;
    warn(value: string, source?: string): Promise<void>;
}