JS Design Patterns: Facade, see more at: https://medium.com/p/c258ed53d7d7

DESIGN_PATTERNS_withouFacadePatternExample.js

class SimpleEmailValidationService {
  isValid(email) {
    return email.indexOf("@") > 2;
  }
}

class SimpleZipCodeValidationService {
  isValid(zipCode) {
    //A98 HNA23
    return zipCode.length === 8;
  }
}

class Client {
  constructor({
    EmailValidationService,
    ZipCodeValidationService,
    name,
    email,
    zipCode,
  }) {
    this._emailValidationService = EmailValidationService;
    this._zipCodeValidationService = ZipCodeValidationService;
    this.setName(name);
    this.setEmail(email);
    this.setZipCode(zipCode);
  }

  setName(name) {
    this.name = name;
  }

  setEmail(email) {
    if (this._emailValidationService.isValid(email)) {
      this.email = email;
    }
  }

  setZipCode(zipCode) {
    if (this._zipCodeValidationService.isValid(zipCode)) {
      this.zipCode = zipCode;
    }
  }
}

const run = () => {
  const ClientInstance = new Client({
    EmailValidationService: new SimpleEmailValidationService(),
    ZipCodeValidationService: new SimpleZipCodeValidationService(),
    name: "Big Client Corporation",
    email: "[email protected]",
    zipCode: "A98 HN23",
  });

  console.log(ClientInstance);
};

run();