mutationobserver-polyfill
Forces use of polyfill in IE 11 since IE 11's native one causes XML data issues. See https://github.com/talee/mutationobserver-breaks-characterdata.
Usage
require('mutationobserver-polyfill')
Uses latest release of MutationObserver polyfill from https://github.com/webcomponents/webcomponentsjs.
If the environment isn't a browser, exists silently.
Build
npm start
Pulls latest MutationObserver polyfill from webcomponentsjs