没有hot_score/为0的时候不展示

src/Flows.js

@@ -332,7 +332,9 @@ class FlowItem extends PureComponent {
             }
             <Time stamp={info.timestamp} short={!img_clickable} />
           </div>
-          <span className="box-header">hot score: {info.hot_score}</span>
+          {!!hot_score && (
+            <span className="box-header">hot score: {info.hot_score}</span>
+          )}
           <div className="box-content">
             <HighlightedMarkdown
               text={info.text}