Merge pull request #1750 from ethereum/yann300-patch-36

fix tabs appearing twice

apps/remix-ide/src/app/panels/tab-proxy.js

@@ -229,19 +229,21 @@ export class TabProxy extends Plugin {
           })
           formatPath.shift()
           if (formatPath.length > 0) {
-            const duplicateTabName = this.loadedTabs.find(({ title }) => title === formatPath.join('/')).name
-            const duplicateTabPath = duplicateTabName.split('/')
-            const duplicateTabFormatPath = [...duplicateTabPath].reverse()
-            const duplicateTabTitle = duplicateTabFormatPath.slice(0, titleLength).reverse().join('/')
-
-            this.loadedTabs.push({
-              id: duplicateTabName,
-              name: duplicateTabName,
-              title: duplicateTabTitle,
-              icon,
-              tooltip: duplicateTabName,
-              iconClass: helper.getPathIcon(duplicateTabName)
-            })
+            const index = this.loadedTabs.findIndex(({ title }) => title === formatPath.join('/'))
+            if (index > -1) {
+              const duplicateTabName = this.loadedTabs[index].name
+              const duplicateTabPath = duplicateTabName.split('/')
+              const duplicateTabFormatPath = [...duplicateTabPath].reverse()
+              const duplicateTabTitle = duplicateTabFormatPath.slice(0, titleLength).reverse().join('/')
+              this.loadedTabs[index] = {
+                id: duplicateTabName,
+                name: duplicateTabName,
+                title: duplicateTabTitle,
+                icon,
+                tooltip: duplicateTabName,
+                iconClass: helper.getPathIcon(duplicateTabName)
+              }
+            }
           }
           break
         }