@juandardilag/value-objects v1.3.0

Value Objects

More about Value Objects by Martin Fowler -> link

This package aims to provide usual value objects for DDD implementations.

Features

Value Objects

Each VO have two scopes/definitions: Validator and Operator.

Validator

type Validator {
    validate(val: T): Error | false | void;
}

Operator

type Operator {
  add(a: ValueObject<T>, b: ValueObject<T>): ValueObject<T>;
  substract(a: ValueObject<T>, b: ValueObject<T>): ValueObject<T>;
  times(times: NumberValueObject, x: ValueObject<T>): ValueObject<T>;
  isLessThan(a: ValueObject<T>, b: ValueObject<T>): BooleanValueObject<T>;
  isBiggerThan(a: ValueObject<T>, b: ValueObject<T>): BooleanValueObject<T>;
  isBiggerOrEqualThan(
    a: ValueObject<T>,
    b: ValueObject<T>
  ): BooleanValueObject<T>;
  equalTo(a: ValueObject<T>, b: ValueObject<T>): BooleanValueObject<T>;
  differsFrom(a: ValueObject<T>, b: ValueObject<T>): BooleanValueObject<T>;
}

Package provides the follow value object specifications:

• BooleanValueObject (boolean)
• NumberValueObject (number)
• StringValueObject (string)
  • EmailValueObject
  • JWTAccessToken
  • PasswordValueObject
  • PhoneNumberValueObject
  • IdentifierValueObject
  • UUIDValueObject
• DateValueObject(Date)
• ArrayValueObject (Object[])
• EnumValueObject (Object[])
• RecordValueObject (Record<string,number>)