How do I make Angular 8 compatible with IE11?

Question

I upgraded to Angular 8 using ng update. It ran its migration scripts which (among other things) removed the es6/es7 imports in polyfills.ts. From

Answer 1

I have solved my polyfill.ts issues with IE 11 by doing the following:

1. Run npm install --save web-animations-js
2. Uncomment line import 'web-animations-js' inside polyfill.ts
3. Change target value from 'es2015' to 'es5' inside tsconfig.json.

IE 11 requires 'es5'.