class sugar proposal

gistfile1.js

class Monster {
  // Goes on the instance
  own name;
  // Goes on the instance and is private
  // In the lexical context of a member of the class it can be accessed with {{Instance}}.health or {{Instance}}["health"]
  private own health = 10;
  
  constructor(name) {
    this.name = name;
  }
  
  isAlive() {
    return this.health <= 0;
  }

  say(message) {
    if (!this.isAlive()) {
      message = '...';
    }
    alert(this.name + ' says: ' + message;
  }

  wound(damage) {
    this.health -= damage;
  }
}