The problem is that the polyfill for custom events isn't running on IE11 due to an incorrect browser support verification. From MDN docs: "Internet Explorer >= 9 adds a CustomEvent object to the window, but with correct implementations, this is a function." I've also fixed the references to 'hawtio-core.js' in index.html and karma.conf.js.
The problem is that the polyfill for custom events isn't running on IE11 due to an incorrect browser support verification. From MDN docs: "Internet Explorer >= 9 adds a CustomEvent object to the window, but with correct implementations, this is a function." I've also fixed the references to 'hawtio-core.js' in index.html and karma.conf.js.