chore(tsconfig): Don't target es2015.

cartant · cartant · commit 3851608d2915 · 2017-11-24T09:40:32.000+10:00
angular/angular-cli#7797
diff --git a/panel/tsconfig.json b/panel/tsconfig.json
@@ -17,7 +17,7 @@
       "@env/*": ["./environments/*"]
     },
     "sourceMap": true,
-    "target": "es2015",
+    "target": "es5",
     "typeRoots": [
       "node_modules/@types"
     ]
