Angular4 Application running issues in IE11

Question

I am building a Angular4 project using Angular CLI (1.1.2). It runs perfectly in Chrome (Version 59.0.3071.115) and firefox(54.0.1) but when I tried to use IE11 (Verison 11.

Answer 1

The default polyfills.ts file is commented and need to uncomment lines of code and run npm install the corresponding module. Then it will compatible with the IE11

Answer 2

To add more detail to @Zeqing's answer.

I uncommented the following line of codes in .\my-app\src\polyfills.ts :

/** 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/set';

Answer 3

I got this when I tried to add an es7 import. I simply replaced the es6 import with the es7 import. Turns out I needed both.

Gives me "Exception thrown and not caught" error:

import 'core-js/es7/array';

Works fine:

import 'core-js/es6/array';
import 'core-js/es7/array';