I used ES6 to write a class that inherits Array and overridden the push method. However, after converting it to ES5 using babel, I found that the method called is still the original push method:

.babelrc:：

{
    "presets": [
      "es2015",
      "react",
      "stage-3"
    ],
    "plugins": []
}

ES6code before compilation:

//类的定义
class ROUTE extends Array{

    constructor(position){
        super();
        this.push({
            position: (position || [0,0,0])
        })
    }

    push(geometry){
        ...//业务相关代码
    }
}

ES5code compiled by babel:

//先是几个工具方法
var _createClass=function...
var _get=function...
function _classCallCheck...
function _possibleConstructorReturn...
function _inherits...

//类的定义
var ROUTE = function (_Array) {
    _inherits(ROUTE, _Array);//继承
        function ROUTE(position) {
        ...//类的构造
        }
        _createClass(ROUTE, [{
            key: "push",
            value: function push(geometry) {
            //业务相关代码，实际上不会执行
        }]);
        return ROUTE;
}

In fact, when the method of the ROUTE class instance is executed, the business logic code in the _createClass method will not be called at all, but only the push method of Array will be executed, unless the push method is overridden in the constructor.

babel version:

  "devDependencies": {
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-react": "^6.24.1",
    "babel-preset-stage-3": "^6.24.1"
  }