interface CalculatorOptions {
    debug: boolean;
    testing: boolean;
}
/**
 * @name Calculator
 * @description tbd...
 */
declare class Calculator {
    private debug;
    constructor(opts: CalculatorOptions);
    logger(message: string): void;
    static addition: (a: number, b: number) => number;
    static subtraction: (a: number, b: number) => number;
}
export { Calculator };
export type { CalculatorOptions };