Adds onBlur typings to rc-slider (#37644)

* Add onBlur typings to rc-slider

* Adds onBlur to rc-slider, adds this prop to tests

* Add semicolon to rc-slider tests

types/rc-slider/index.d.ts

@@ -8,6 +8,7 @@
 //                 Nick Maddren <https://github.com/nicholasmaddren>
 //                 Roman Nevolin <https://github.com/nulladdict>
 //                 Mojtaba Izadmehr <https://github.com/m-izadmehr>
+//                 Andrey Yankovsky <https://github.com/yankovsky>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.8
 
@@ -135,6 +136,10 @@ export interface SliderProps extends CommonApiProps {
      * onAfterChange will be triggered when ontouchend or onmouseup is triggered.
      */
     onAfterChange?(value: number): void;
+    /**
+     * Handle blur event on the control
+     */
+    onBlur?: React.FocusEventHandler;
     /**
      * Set initial value of slider.
      *  @default 0

types/rc-slider/rc-slider-tests.tsx

@@ -24,6 +24,8 @@ const onChangeFunc1 = (string: number) => {};
 
 const onChangeFunc2 = (string: number[]) => {};
 
+const onBlurFunc = (e: React.FocusEvent) => {};
+
 ReactDOM.render(
     <Slider
         className="bottomRight"
@@ -38,6 +40,7 @@ ReactDOM.render(
         dots={true}
         onBeforeChange={onChangeFunc1}
         onChange={onChangeFunc1}
+        onBlur={onBlurFunc}
         onAfterChange={onChangeFunc1}
         defaultValue={0.1}
         value={0.1}