JS Design Patterns: Decorator, see more at: https://medium.com/p/ea34a6c10423

DESIGN_PATTERNS_withoutDecoratorPatternExample.js

class User {
  constructor({ name, continent, email, allowCookies = true }) {
    this.setName(name);
    this.setEmail(email);
    this.setContinent(continent);

    if (continent === "Europe") {
      this.setAllowCookies(allowCookies);
    }
  }

  setAllowCookies(allowCookies) {
    this.allowCookies = allowCookies;
  }

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

  setContinent(continent) {
    this.continent = continent;
  }

  setEmail(email) {
    this.email = email;
  }

  deleteAllMyData() {
    if (continent === "Europe") {
      delete this.name;
      delete this.continent;
      delete this.email;
    }
  }
}

const run = () => {
  const userRicardoInstance = new User({
    name: "Ricardo",
    continent: "Europe",
    email: "[email protected]",
    allowCookies: false,
  });

  console.log(userRicardoInstance);

  const userRobInstance = new User({
    name: "Rob",
    continent: "America",
    email: "[email protected]",
  });

  console.log(userRobInstance);
};

run();