4開啟之后沒有問題了。今天升級折騰了一下?lián)Q成5又出現(xiàn)1002語法錯誤。而且是一樣的問題，簡直無敵了。polyfills.ts配置和4一樣沒有改動

Run npm install --save intl.
Run npm install --save classlist.js.
然后找到src里面的polyfills.ts文件，將注釋打開

/**
 * This file includes polyfills needed by Angular and is loaded before the app.
 * You can add your own extra polyfills to this file.
 *
 * This file is divided into 2 sections:
 *   1. Browser polyfills. These are applied before loading ZoneJS and are sorted by browsers.
 *   2. Application imports. Files imported after ZoneJS that should be loaded before your main
 *      file.
 *
 * The current setup is for so-called "evergreen" browsers; the last versions of browsers that
 * automatically update themselves. This includes Safari >= 10, Chrome >= 55 (including Opera),
 * Edge >= 13 on the desktop, and iOS 10 and Chrome on mobile.
 *
 * Learn more in https://angular.io/docs/ts/latest/guide/browser-support.html
 */

/***************************************************************************************************
 * BROWSER POLYFILLS
 */

/** IE9, IE10 and IE11 requires all of the following polyfills. **/
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/weak-map';
import 'core-js/es6/set';

/** IE10 and IE11 requires the following for NgClass support on SVG elements */
import 'classlist.js';  // Run `npm install --save classlist.js`.

/** Evergreen browsers require these. **/
import 'core-js/es6/reflect';
import 'core-js/es7/reflect';


/**
 * Required to support Web Animations `@angular/animation`.
 * Needed for: All but Chrome, Firefox and Opera. http://caniuse.com/#feat=web-animation
 **/
// import 'web-animations-js';  // Run `npm install --save web-animations-js`.



/***************************************************************************************************
 * Zone JS is required by Angular itself.
 */
import 'zone.js/dist/zone';  // Included with Angular CLI.



/***************************************************************************************************
 * APPLICATION IMPORTS
 */

/**
 * Date, currency, decimal and percent pipes.
 * Needed for: All but Chrome, Firefox, Edge, IE11 and Safari 10
 */
import 'intl';  // Run `npm install --save intl`.
/**
 * Need to import at least one locale-data with intl.
 */
import 'intl/locale-data/jsonp/en';

PS:在IE9中，日期管道顯示有問題(yyyy-mm-dd HH:mm:ss這種格式)，需要自己寫一個日期的管道

但是感覺IE9還是不兼容誒，打開polyfills.ts里面的注釋以后，IE11可以運(yùn)行了。但是IE9還是會報錯。。。

如果你是用的angular/cli生成的項目，在/src目錄下會有一個polyfills.ts的文件，里面是官方推薦的對一些瀏覽器的兼容性補(bǔ)丁，如果需要兼容ie，可以去掉一下多行的注釋，如圖：

樓主，問題解決了么？