import { Logger } from './interfaces';
/**
 * Sets log level based on filter.
 * @param logLevel Use logLevel.* to set this value. 0 - none; 10 - error; 20 - warn; 30 - info; 40 - debug
 */
export declare function setLevels(filter: RegExp, logLevel: number): Logger[];
export declare function setLevel(logLevel: number): void;
export declare function getLevel(): number;
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