class Base {
  static log = [];
  static {
    Base.log.push('base-block');
  }
  static value = (() => { Base.log.push('base-field'); return 1; })();
}

class Derived extends Base {
  static {
    Derived.log.push('derived-block');
  }
  static value2 = (() => { Derived.log.push('derived-field'); return 2; })();
}

console.log(Derived.log.join(','));