Update avaiable hooks. (#8909)

Apply comments.

Minor changes.

react-select/react-select-tests.tsx

@@ -12,8 +12,10 @@ class SelectTest extends React.Component<React.Props<{}>, {}> {
 
     render() {
         const options: ReactSelect.Option[] = [{ label: "Foo", value: "bar" }]
+        const onOpen = () => { return; };
+        const onClose = () => { return; };
         return <div>
-           <Select options={options} />
+           <Select options={options} onOpen={onOpen} onClose={onClose} />
         </div>
     }
 

react-select/react-select.d.ts

@@ -153,9 +153,12 @@ declare namespace ReactSelect {
          */
         onBlurResetsInput?: boolean;
         onChange?: (newValue: Option | Option[]) => void;
+        onClose?: () => void;
         onFocus?: __React.FocusEventHandler;
         onInputChange?: (inputValue: string) => void;
+        onOpen?: () => void;
         onOptionLabelClick?: (value: string, event: Event) => void;
+
         /**
          * function which returns a custom way to render the options in the menu
          */