defineEnumerableProperties.js

export default function _defineEnumerableProperties(obj, descs) {
  for (var key in descs) {
    var desc = descs[key];
    desc.configurable = desc.enumerable = true;
    if ("value" in desc) desc.writable = true;
    Object.defineProperty(obj, key, desc);
  }

  if (Object.getOwnPropertySymbols) {
    var objectSymbols = Object.getOwnPropertySymbols(descs);

    for (var i = 0; i < objectSymbols.length; i++) {
      var sym = objectSymbols[i];
      var desc = descs[sym];
      desc.configurable = desc.enumerable = true;
      if ("value" in desc) desc.writable = true;
      Object.defineProperty(obj, sym, desc);
    }
  }

  return obj;
}