diff --git a/src/utils/commons.js b/src/utils/commons.js
index 40e3d7e..9456393 100644
--- a/src/utils/commons.js
+++ b/src/utils/commons.js
@@ -188,6 +188,8 @@ export function merge(...objects) {
  * 数组分组
  * - 相当于 lodash 的 _.groupBy
  * @see https://www.lodashjs.com/docs/lodash.groupBy#_groupbycollection-iteratee_identity
+ * ECMAScript 2021 原生
+ * - Object.groupBy(items, callbackFn)
  */
 export function groupBy(array = [], callback) {
   return array.reduce((groups, item) => {