i am using angular4 for my project, when i first encountered this error i found some blog which asked me to install object-assign and use in the project. so i installed object-assign using npm install object-assign --save command and refrenced it in the polyfill.ts file like this
import 'object-assign';
import 'core-js/es6/reflect';
import 'core-js/es7/reflect';
then i build the project using this command
ng build --prod --env=prod
but even after refrencing this file i am getting the error like this
how can i solve this, did i miss something.
i am able to see the application in all other browser except IE11