Polyfill to vendor bundle

[iHateYourGlasses]

It seems like adding 'babel-polyfill' to the top of client/index.js or server/index.js doesn't affect vendor bundle. For example, if you create new project with kyt-cli and then add to

node_modules/react/lib/React.js

following code:

var promiseTest = new Promise(function(resolve){
  console.log('i am promise in react!');
  resolve('hi react');
});

promiseTest.then(function(successMessage) {
  console.log(successMessage);
});

it will fail in IE11 with message "Promise is not defined".

How can i add polyfill to my vendor bundle?

[seancy]

I also met this problem now, The project has many entries and a vendor, each of the entry works find, but not vendor. (on IE9)