Angular2 IE11 Unable to get property 'apply' of undefined or null reference

Question

I am getting the following error after upgrading my angular2 packages to the following versions:

• @angular/common\": \"^2.3.1
• @angular/compiler\": \"^

Answer 1

If you are using @angular/cli and intend to support IE9-11 you can edit the src/polyfills.ts file to enable appropriate polyfills. The required polyfills are already in the file so all you need to do is un-comment them.

By default @angular/cli projects target "evergreen" browsers out of the box which means that IE isn't immediately supported, but you can add support by importing polyfills for the features you need.