onEvent 为 null 报异常，fixed #154

Author: hustcc

__tests__/index.spec.jsx

@@ -169,9 +169,15 @@ describe('index.js', () => {
         click: () => {},
       }
     });
-
     component.update(); // force update
     expect(preId).not.toBe(component.instance().getEchartsInstance().id);
+
+    // to null
+    component.setProps({
+      onEvents: null,
+    });
+    component.update();
+    expect(preId).not.toBe(component.instance().getEchartsInstance().id);
   });
 
   test('unmount', () => {

demo/dist/bundle.js

@@ -136,7 +136,7 @@ var EchartsReactCore = function (_Component) {
       // 1. 切换 theme 的时候
       // 2. 修改 opts 的时候
       // 3. 修改 onEvents 的时候，这样可以取消所以之前绑定的事件 issue #151
-      if (prevProps.theme !== this.props.theme || !isEqual(prevProps.opts, this.props.opts) || !isEqual(Object.keys(prevProps.onEvents).sort(), Object.keys(this.props.onEvents).sort())) {
+      if (prevProps.theme !== this.props.theme || !isEqual(prevProps.opts, this.props.opts) || !isEqual(Object.keys(prevProps.onEvents || {}).sort(), Object.keys(this.props.onEvents || {}).sort())) {
         this.dispose();
 
         this.rerender(); // 重建

lib/core.js

@@ -1,6 +1,6 @@
 {
   "name": "echarts-for-react",
-  "version": "2.0.7",
+  "version": "2.0.8",
   "description": "baidu Echarts(v3.x & v4.x) components for react.",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",

package.json

@@ -28,7 +28,7 @@ export default class EchartsReactCore extends Component {
     if (
       prevProps.theme !== this.props.theme ||
       !isEqual(prevProps.opts, this.props.opts) ||
-      !isEqual(Object.keys(prevProps.onEvents).sort(), Object.keys(this.props.onEvents).sort())
+      !isEqual(Object.keys(prevProps.onEvents || {}).sort(), Object.keys(this.props.onEvents || {}).sort())
     ) {
       this.dispose();