Checkout cart totals.js throws an error when estimating shipping

Steps to reproduce

1. Add a product to the cart
2. Make sure you have at least one Shipping Method active (e.g. Flat Rate)
3. Navigate to Shopping Cart page
4. Observe the result

Expected result

1. Shipping should be estimated without errors

Actual result

1. Loading indicator keeps spinning
2. There is an exception thrown in IE console "Object doesn't support this action"

Observations

Reproduceable when using Internet Explorer 9+ browser.
It happens because in the file "magento/module-checkout/view/frontend/web/js/view/cart/totals.js" there are two calls to instantiate event by using new Event('resize') which is not supported by Internet Explorer.
One possible fix would be to refactor the event dispatch calls to something like below:

initialize: function () {
    this._super();
    var self = this;
    totalsService.totals.subscribe(function () {
        self._dispatchEvent();
    });
    shippingService.getShippingRates().subscribe(function () {
        self._dispatchEvent();
    });
},
_dispatchEvent: function () {
    // backward compatibility with IE
    var event = document.createEvent('Event');
    event.initEvent('resize', true, true);
    window.dispatchEvent(event);
}

Magento Versions

Magento 2.1 and develop branch.

[sdzhepa]

@alexgifts Thank you for reporting this issue. We have created an internal ticket MAGETWO-55115 to fix the problem.

[olysenko]

hi, fix was delivered in develop branch, see commit. Closed as fixed