export interface LoggerOptions {
    shieldStyle?: string;
}
export declare class Logger {
    private static readonly instances;
    private readonly shield;
    private constructor();
    static getInstance(identifier: string, options?: LoggerOptions): Logger;
    private log;
    trace(messageText: string, refObject?: Object): Logger;
    debug(messageText: string, refObject?: Object): Logger;
    info(messageText: string, refObject?: Object): Logger;
    warn(messageText: string, refObject?: Object): Logger;
    error(messageText: string, refObject?: Object): Logger;
    static get cache(): Object[];
}
export declare const Log: Logger;