export declare function error(msg: string, extra?: any, prefix?: string): void;
export declare function info(msg: string, extra?: any, prefix?: string): void;
export declare function warn(msg: string, extra?: any, prefix?: string): void;
export declare function verbose(msg: string, extra?: any, prefix?: string): void;
export declare function silly(msg: string, extra?: any, prefix?: string): void;
/**
 * Log deeply nested object
 */
export declare function inspect(obj: {}, name?: string, depth?: number): void;
declare type LogLevelValues = 'error' | 'warn' | 'http' | 'info' | 'verbose' | 'silly';
export declare function setLogLevel(level: LogLevelValues): void;
export {};
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