declare const CATEGORIES: {
    readonly error: 1;
    readonly warn: 2;
    readonly info: 3;
    readonly debug: 4;
    readonly trace: 5;
};
export declare class Logger {
    static get categories(): {
        readonly error: 1;
        readonly warn: 2;
        readonly info: 3;
        readonly debug: 4;
        readonly trace: 5;
    };
    static level: "" | 2 | 1 | 5 | 4 | 3;
    static log(level: keyof typeof CATEGORIES, fn: LoggerCallback): void;
    static error(fn: LoggerCallback): void;
    static warn(fn: LoggerCallback): void;
    static info(fn: LoggerCallback): void;
    static debug(fn: LoggerCallback): void;
    static trace(fn: LoggerCallback): void;
}
export interface LoggerCallback {
    (): string;
}
export {};
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