ChromeTypes class
class ChromeTypes extends ChromeApi {
 static final JsObject _types = chrome['types'];
 ChromeTypes._();
 bool get available => _types != null;
 void _throwNotAvailable() {
   throw new UnsupportedError("'chrome.types' is not available");
 }
}
Extends
ChromeApi > ChromeTypes
Properties
final bool available #
Returns true if the API is available. The common causes of an API not being avilable are:
- a permission is missing in the application's manifest.json file
 - the API is defined on a newer version of Chrome then the current runtime
 
docs inherited from ChromeApi 
bool get available => _types != null;