实现 new

[nmsn]

No description provided.

[nmsn]

function myNew(constructor, ...args) {
  if (typeof constructor !== 'function') {
    throw new Error('err!');
  }

  const newObj = Object.create(constructor.protoyype);
  const result = constructor.apply(newObj, args);

  return typeof obj === 'object' ? result : newObj;
}