Simple Google Maps Async Loader Using Deferred Object (ES6/jQuery)

load-map.js

export default function(ApiKey, libraries) {
	var promise = jQuery.Deferred();
	var script  = document.createElement('script');
	script.type = 'text/javascript';
	script.src  = 'http://maps.google.com/maps/api/js?key='+ApiKey;
	if(libraries)
		script.src += '&libraries='+ libraries
	document.body.appendChild(script);
	jQuery('body').addClass('google-maps-ready');

	var interval = setInterval(() => {
		if(typeof window.google !== 'undefined' && typeof google.maps !== 'undefined') {
			promise.resolve();
			clearInterval(interval);
		}
	}, 200)// succeed

	return promise.promise();
}