@moomfe/zenjs/src/shared/polyfill/Object.entries.js

ZenJS 是一个高性能的 JavaScript 工具库。

import keys from "../global/Object/keys";
import Array from "../global/Array/index";


/**
 * 方法返回一个给定对象自身可枚举属性的键值对数组.
 * Object.entries polyfill
 */
export default function( obj ){

  let index, key;

  const ownKeys = keys( obj );
  const result = Array( index = ownKeys.length );

  while( index-- ){
    result[ index ] = [ ( key = ownKeys[ index ] ), obj[ key ] ];
  }

  return result;
}