使原生Object能够被遍历

objectEntries.js

/**
 * 使object可遍历
 * @param {Object} obj 需要处理的object
 */
function* objectEntries(obj) {
  const propKeys = Reflect.ownKeys(obj);
  for(const propKey of propKeys) {
    yield [propKey, obj[propKey]];
  }
}

const obj = {
  a: 1,
  b: '2',
};

for(const [key, value] of objectEntries(obj)) {
  console.log(key, value);
}