polyfill-service/polyfills/location/origin/polyfill.js

A polyfill combinator

try {
	Object.defineProperty(window.location, 'origin', {
		enumerable: true,
		writable: false,
		value: window.location.protocol + '//' + window.location.hostname + (window.location.port ? ':' + window.location.port : ''),
		configurable: false
	});
} catch(e) {

	// IE9 is throwing "Object doesn't support this action" when attempting defineProperty on window.location, so provide an alternative
	window.location.origin = window.location.protocol + '//' + window.location.hostname + (window.location.port ? ':' + window.location.port : '');
}