import * as i0 from "@angular/core";
export declare enum LogLevels {
    Trace = 0,
    Debug = 1,
    Information = 2,
    Warning = 3,
    Error = 4,
    Critical = 5
}
export declare class Logger {
    private minLevel;
    constructor();
    logTrace(...args: any[]): void;
    logDebug(...args: any[]): void;
    logInformation(...args: any[]): void;
    logWarning(...args: any[]): void;
    logError(...args: any[]): void;
    logCritical(...args: any[]): void;
    private log;
    private writeLog;
    private getLevelLabel;
    private getLevelName;
    private parseLogLevel;
    private tryGetMinLevelFrom;
    static ɵfac: i0.ɵɵFactoryDeclaration<Logger, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<Logger>;
}