Fixing JS error on channel leave or being removed from the channel (m…

…attermost#4437)
Revanth47 · Dec 4, 2019 · 9fee649 · 9fee649
1 parent facb5fd
commit 9fee649
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/components/sidebar/sidebar.jsx b/components/sidebar/sidebar.jsx
@@ -400,9 +400,11 @@ export default class Sidebar extends React.PureComponent {
  }
 
  updateScrollbarOnChannelChange = (channelId) => {
- const curChannel = this.refs[channelId].getWrappedInstance().refs.channel.getBoundingClientRect();
- if ((curChannel.top - Constants.CHANNEL_SCROLL_ADJUSTMENT < 0) || (curChannel.top + curChannel.height > this.refs.scrollbar.view.getBoundingClientRect().height)) {
- this.refs.scrollbar.scrollTop(this.refs.scrollbar.view.scrollTop + (curChannel.top - Constants.CHANNEL_SCROLL_ADJUSTMENT));
+ if (this.refs[channelId]) {
+ const curChannel = this.refs[channelId].getWrappedInstance().refs.channel.getBoundingClientRect();
+ if ((curChannel.top - Constants.CHANNEL_SCROLL_ADJUSTMENT < 0) || (curChannel.top + curChannel.height > this.refs.scrollbar.view.getBoundingClientRect().height)) {
+ this.refs.scrollbar.scrollTop(this.refs.scrollbar.view.scrollTop + (curChannel.top - Constants.CHANNEL_SCROLL_ADJUSTMENT));
+ }
  }
  }