polyfill-service/polyfills/URL/detect.js

A polyfill combinator

(function (global) {
	/*
	 * Browsers may have:
	 * No global URL object
	 * URL with static methods only - may have a dummy constructor
	 * URL with members except searchParams
	 * Full URL API support
	 */
	'use strict';

	try {
		var nativeURL = new global.URL('http://example.com');

		return 'href' in nativeURL && 'searchParams' in nativeURL;
	}
	catch (error) {
		return false;
	}
}(this))