import { IValueObject } from "./IValueObject";
export declare class NumberValueObject extends Number implements IValueObject<number> {
    readonly value: number;
    constructor(value: number);
    validate(): Error | void;
    static empty(): NumberValueObject;
    static zero(): NumberValueObject;
    plus(o: IValueObject<number>): NumberValueObject;
    subtract(o: IValueObject<number>): NumberValueObject;
    times(o: IValueObject<number>): NumberValueObject;
    divide(o: IValueObject<number>): NumberValueObject;
    abs(): NumberValueObject;
    negate(): NumberValueObject;
    isPositive(): boolean;
    isNegative(): boolean;
    isZero(): boolean;
    compareTo(o: IValueObject<number>): number;
    equalTo(o: IValueObject<number>): boolean;
    greaterThan(o: IValueObject<number>): boolean;
    lessThan(o: IValueObject<number>): boolean;
    greaterOrEqualThan(o: IValueObject<number>): boolean;
    lessOrEqualThan(o: IValueObject<number>): boolean;
    fixed(n: number): NumberValueObject;
}
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