export interface IValueObject<T = unknown> {
    get value(): T;
    equals(vo?: IValueObject): boolean;
}
/**
 * A small immutable object whose equality is not based on identity but purely on its attributes.
 *
 * ## Rules
 * - Value objects are immutable;
 * - Value objects can reference other objects;
 *
 * ## Notes:
 * - Value objects can/should hold validation for their data. When we have validation rules.
 */
export declare abstract class ValueObject<T> implements IValueObject<T> {
    protected readonly _data: T;
    constructor(props: T);
    equals(vo?: ValueObject<T>): boolean;
    get value(): T;
}
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