Fix type issues

ardatan · ardatan · commit 69f44b910ad6 · 2021-06-23T17:00:19.000+03:00
diff --git a/.vscode/settings.json b/.vscode/settings.json
@@ -12,7 +12,7 @@
   "files.exclude": {
     "**/.git": true,
     "**/.DS_Store": true,
-    "node_modules": false,
+    "node_modules": true,
     "test-lib": true,
     "lib": true,
     "coverage": true,
diff --git a/packages/stitch/src/mergeCandidates.ts b/packages/stitch/src/mergeCandidates.ts
@@ -198,9 +198,9 @@ function mergeInterfaceTypeCandidates<TContext = Record<string, any>>(
 
   const description = mergeTypeDescriptions(candidates, typeMergingOptions);
   const fields = fieldConfigMapFromTypeCandidates(candidates, typeMergingOptions);
-  const typeConfigs = candidates.map(candidate => (candidate.type as GraphQLInterfaceType).toConfig());
+  const typeConfigs = candidates.map(candidate => candidate.type.toConfig());
   const interfaceMap = typeConfigs
-    .map(typeConfig => typeConfig.interfaces)
+    .map(typeConfig => ('interfaces' in typeConfig ? typeConfig.interfaces : []))
     .reduce<Record<string, GraphQLInterfaceType>>((acc, interfaces) => {
       if (interfaces != null) {
         for (const iface of interfaces) {
