export declare class LoggerFilter {
    private readonly blackList;
    private readonly whiteList;
    private readonly placeholder;
    constructor(includeBlackList?: string[], excludeBlackList?: string[], whiteList?: string[]);
    process(item?: any): object;
    private filterObject;
    private filterItem;
    private isOnBlacklist;
    private isOnWhitelist;
    private isPlainObject;
    private isJSONString;
    private generateBlackList;
    private filterError;
}