fix: throw error when unmount player after destroyed

__tests__/tests/player.test.js

@@ -1247,4 +1247,36 @@ describe('<ReactJkMusicPlayer/>', () => {
     expect(onPlayIndexChange).not.toHaveBeenCalled()
     expect(wrapper.state().name).toEqual('b')
   })
+
+  it('should not throw error when unmount player', () => {
+    const errorSpy = jest.spyOn(console, 'error').mockImplementation(() => {});
+    const wrapper = mount(
+      <ReactJkMusicPlayer
+        mode="full"
+        audioLists={[
+          { musicSrc: 'a', cover: 'a', name: 'a' },
+        ]}
+        autoPlay={false}
+      />,
+    )
+    wrapper.unmount()
+    expect(errorSpy).not.toHaveBeenCalled()
+  })
+
+  it('should not throw error when unmount player after destroyed', () => {
+    const errorSpy = jest.spyOn(console, 'error').mockImplementation(() => {});
+    const wrapper = mount(
+      <ReactJkMusicPlayer
+        mode="full"
+        audioLists={[
+          { musicSrc: 'a', cover: 'a', name: 'a' },
+        ]}
+        autoPlay={false}
+        showDestroy
+      />,
+    )
+    wrapper.find('.destroy-btn').simulate('click')
+    wrapper.unmount()
+    expect(errorSpy).not.toHaveBeenCalled()
+  })
 })

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-jinke-music-player",
-  "version": "4.15.2",
+  "version": "4.15.3",
   "description": "Maybe the best beautiful HTML5 responsive player component for react",
   "main": "lib/index.js",
   "module": "es/index.js",

src/index.js

@@ -1,5 +1,5 @@
 /**
- * @version 4.15.2
+ * @version 4.15.3
  * @name react-jinke-music-player
  * @description Maybe the best beautiful HTML5 responsive player component for react :)
  * @author Jinke.Li <[email protected]>
@@ -1867,7 +1867,9 @@ export default class ReactJkMusicPlayer extends PureComponent {
     }
   }
   unBindKeyDownEvents = () => {
-    this.player.current.removeEventListener('keydown', this.onKeyDown, false)
+    if (this.player.current) {
+      this.player.current.removeEventListener('keydown', this.onKeyDown, false)
+    }
   }
   onKeyDown = (e) => {
     const { spaceBar } = this.props