Fix call to getMode to include compilerOptions

PR-URL: #30
Credit: @mattdean-digicatapult
Close: #30
Reviewed-by: @isaacs

src/service/resolve-type-reference-directive-references.ts

@@ -58,7 +58,8 @@ export const getResolveTypeReferenceDirectiveReferences = (
       const name = loader.nameAndMode.getName(entry)
       const mode = loader.nameAndMode.getMode(
         entry,
-        containingSourceFile
+        containingSourceFile,
+        options
       )
       const key = createModeAwareCacheKey(name, mode)
       let result = rtrdrInternalCache.get(key)