Fix error "Cannot read property 'externalModuleIndicator' of undefined"

octogonz · octogonz · commit a4044bf6f637 · 2020-01-08T17:46:55.000-08:00
diff --git a/apps/api-extractor/src/generators/DeclarationReferenceGenerator.ts b/apps/api-extractor/src/generators/DeclarationReferenceGenerator.ts
@@ -212,7 +212,7 @@ export class DeclarationReferenceGenerator {
         followedSymbol.declarations
         && followedSymbol.declarations[0]
         && followedSymbol.declarations[0].getSourceFile();
-      if (ts.isExternalModule(sourceFile)) {
+      if (sourceFile && ts.isExternalModule(sourceFile)) {
         parentRef = new DeclarationReference(this._sourceFileToModuleSource(sourceFile));
       } else {
         parentRef = new DeclarationReference(GlobalSource.instance);
