null scrollbar fix for componentWillUnmount

In some cases, `componentWillUnmount` is called before `componentDidMount`, which leaves `this.scrollbar` as null and causes a `Cannot read property 'destroy' of null` error. [See this issue in React](facebook/react#5719)
gesuvskn · Apr 5, 2021 · cdce81f · cdce81f
1 parent 62db778
commit cdce81f
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/index.jsx b/src/index.jsx
@@ -37,7 +37,9 @@ module.exports = React.createClass({
     },
 
     componentWillUnmount() {
-        this.scrollbar.destroy();
+        if (this.scrollbar) {
+            this.scrollbar.destroy();
+        }
         this.scrollbar = null;
     },