1. DomName('DOMImplementation.hasFeature')
  2. DocsEditable()
bool hasFeature(String feature, String version)

Source 

@DomName('DOMImplementation.hasFeature')
@DocsEditable()
bool hasFeature(String feature, String version) => _blink.BlinkDOMImplementation.instance.hasFeature_Callback_2_(unwrap_jso(this), feature, version);