export type LogLevel = "error" | "warn" | "info" | "silent" | "debug" | "trace";
interface LoggerOptions {
    level?: LogLevel;
}
export default class Logger {
    level: LogLevel;
    timesMap: Map<string, any>;
    private output;
    constructor(opts?: LoggerOptions);
    setOutput(output: (level: LogLevel, ...message: string[]) => void): void;
    private defaultOutput;
    setLevel(level: LogLevel): void;
    info(msg: string): void;
    warn(msg: string): void;
    error(msg: string): void;
    debug(...info: any[]): void;
    time(label: string): void;
    timeEnd(label: string): void;
}
export declare function createLogger(options: LoggerOptions): Logger;
declare const defaultLogger: Logger;
export { defaultLogger };