CHALLENGE

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(','));