diff --git a/packages/quicktype-core/src/language/JavaScript/JavaScriptRenderer.ts b/packages/quicktype-core/src/language/JavaScript/JavaScriptRenderer.ts
index c14a44efdb..def7a00ee1 100644
--- a/packages/quicktype-core/src/language/JavaScript/JavaScriptRenderer.ts
+++ b/packages/quicktype-core/src/language/JavaScript/JavaScriptRenderer.ts
@@ -473,7 +473,8 @@ function o(props${anyArrayAnnotation}, additional${anyAnnotation}) {
 }
 
 function m(additional${anyAnnotation}) {
-    return { props: [], additional };
+    const props${anyArrayAnnotation} = [];
+    return { props, additional };
 }
 
 function r(name${stringAnnotation}) {
diff --git a/test/fixtures/typescript/tsconfig.json b/test/fixtures/typescript/tsconfig.json
index a4d26e23cd..6bcd3937d1 100644
--- a/test/fixtures/typescript/tsconfig.json
+++ b/test/fixtures/typescript/tsconfig.json
@@ -1,7 +1,9 @@
 {
     "compilerOptions": {
         "target": "es6",
-        "noEmit": true
+        "noEmit": true,
+        "noImplicitAny": true,
+        "strictNullChecks": false
     },
     "files": ["main.ts"]
 }