Value object static Factory

Question

I have some problematic for now that i want to know ur opinions. First, i have a userPassword which represent a value object within my user domain model. i would like to validate 2 cases when creating my userPassword object :

• Not empty value of password

• Hash the given value Thus, i don't really know the best approach to achieve it. Now that the problem was exposed, take a look at my code below :

  export class UserPassword {
    private readonly value:string
  
   private  constructor(value: string) {
  
       this.value =  value
   }
    public getValue():string {
        return this.value
    }
  
    // My static factory in which i want to apply my validations cases
  
    static create(password: string):UserPassword {
        // Need to be implemented
    }
    private async hashPassword(password: string):Promise<string>{
       return await bcrypt.hash(password,10)
    }
    async comparePassword(password:string):Promise<boolean> {
        let hashed: string = this.value
        return await bcrypt.compare(password, hashed)
    }
  

  }

Answer 1

For validations purposes, i just done some verifications before creating my password object. Because i think that it's always relevant to defined validation logic in the object contruction. So here is my solution:

export class UserPassword {
    private readonly value:string

     constructor(value: string) {
        if (value === "") {
            throw new UserInputError("Password must be filled")
        }
        else {
            this.hashPassword(value).then(r => console.log(r))
            this.value =  value
        }
   }
    public getValue():string {
        return this.value
    }

    private async hashPassword(password: string):Promise<string>{
        return bcrypt.hash(password,10)
    }
    async comparePassword(password:string):Promise<boolean> {
        let hashed: string = this.value
        return  bcrypt.compare(password, hashed)
    }
}