}
  equals(other: HashSet<K> | undefined | null) {
    if (other === undefined || other === null) {
      return false;
    }
    if (this.size() !== other.size()) {
      return false;
    }
    for (let k of this.values()) {
      if (!other.contains(k)) {
        return false;
      }
    }
    return true;

    return true;
    // for (let key of (Object.keys(prevProps) as (keyof Props)[])) {
    //   if (key === 'delta' || key === 'args' || key === 'updaters') { continue; }
    //   if (key === 'allocatedPointNodeSubset') {
    //     // subsets could be different objects but have the same contents
    //     if (prevProps[key].hash() !== props[key].hash()) {
    //       return true;
    //     } else {
    //       continue;
    //     }
    //   }
    //   if (prevProps[key] !== props[key]) {
    //     return true;
    //   }
    // }
    // return false;

    // return true;
    for (let key of (Object.keys(prevProps) as (keyof Props)[])) {
      if (key === 'delta' || key === 'args' || key === 'updaters') { continue; }
      if (key === 'allocatedPointNodeSubset') {
        // subsets could be different objects but have the same contents
        if (prevProps[key].equals(props[key])) {
          return true;
        } else {
          continue;
        }
      }
      if (prevProps[key] !== props[key]) {
        return true;
      }
    }
    return false;

    console.log(`chunk component upsert children got here`);

          console.log(`zlevel shouldUpdate differed in ${key}, returning true`);
          return true;
        } else {
          continue;
        }
      }
      if (key === 'selectedPointNode') {
        if (prevProps[key]?.hash() !== props[key]?.hash()) {
          console.log(`zlevel shouldUpdate differed in ${key}, returning true`);

        console.log(`zlevel shouldUpdate differed in ${key}, returning true`);