GlimmerX autotracked objects

make-tracked.js

function makeTracked(obj) {
  function shouldDeepTrack(value) {
    return typeof value === 'object' && value !== null;
  }
  Object.keys(obj).forEach((key)=>{
    const value = obj[key];
    tracked(obj, key);
    if (shouldDeepTrack(value)) {
      obj[key] = makeTracked(value);
    } else {
      obj[key] = value;
    }
    const desc = Object.getOwnPropertyDescriptor(obj, key);
    let set = desc.set;
    desc.set = function(value) {
      if (shouldDeepTrack(value)) {
        return set.call(this, makeTracked(value));
      } else {
        return set.call(this, value);
      }
    }
    Object.defineProperty(obj, key, desc);
  });
  return obj;
}