angular.js - How to use some es7 features?

Question

Please tell me, I want to use some features of es7 in angular2, such as Array.observe(), but using vscode, an error will be reported, such as:

private serviceTabs = this.tabControlServiceModal.tabs;
    Array.observe(serviceTabs, function(changes) {
        this.updatePagination();
    });
    

Reference to feature library:

import 'core-js/es6/symbol';
import 'core-js/es6/object';
import 'core-js/es6/function';
import 'core-js/es6/parse-int';
import 'core-js/es6/parse-float';
import 'core-js/es6/number';
import 'core-js/es6/math';
import 'core-js/es6/string';
import 'core-js/es6/date';
import 'core-js/es6/array';
import 'core-js/es6/regexp';
import 'core-js/es6/map';
import 'core-js/es6/set';
import 'core-js/es6/reflect';

import 'core-js/es7/reflect';
import 'core-js/es7/observe';
import 'zone.js/dist/zone';


现在有个疑问，如何知道Array.observe()是属于哪个es7特性，
import 'core-js/es7/observe';是我自己乱写的，不知道对不对，求教，谢谢

Answer 1

How is observation a feature of ES2016? Library references are also a problem. On the other hand, the current ES2016 feature code cannot be converted into identifiable and executable code. For example, ES5 will also report errors, babel plugins