侧边栏保留icon占位

vue/src/layout/components/Sidebar/components/SidebarItemContent.vue

@@ -10,14 +10,18 @@
             const {icon, title} = context.props
             const vnodes = []
 
+            let iconComponent
+
             if (icon) {
                 const isElIcon = icon.startsWith('el-icon-')
-                vnodes.push(isElIcon ? <i class={icon}/> : <svg-icon icon={icon}/>)
+                iconComponent = isElIcon ? <i class={icon + ' svg-icon'}/> : <svg-icon icon={icon}/>
             }
+            else iconComponent = <span class="svg-icon"/>
+
+            vnodes.push(iconComponent)
+
+            if (title) vnodes.push(<span slot="title" class="sidebar-item-content">{(title)}</span>)
 
-            if (title) {
-                vnodes.push(<span slot="title" class="sidebar-item-content">{(title)}</span>)
-            }
             return vnodes
         }
     }