clear index

src/app/editor/contextualListener.js

@@ -13,13 +13,12 @@ class ContextualListener {
 
     events.compiler.register('compilationFinished', (success, data, source) => {
       this._stopWarning()
-      if (success) {
-        this._buildIndex(data, source)
-      } else {
       this._index = {
         ReferencedDeclarations: {},
         Expressions: []
       }
+      if (success) {
+        this._buildIndex(data, source)
       }
     })
     this.sourceMappingDecoder = new SourceMappingDecoder()