Fix tests

Timer · Timer · commit 82052a53b6d0 · 2018-10-24T18:35:47.000-04:00
diff --git a/test/fixtures/typescript-advanced/package.json b/test/fixtures/typescript-advanced/package.json
@@ -2,6 +2,7 @@
   "dependencies": {
     "@types/react": "*",
     "@types/react-dom": "*",
+    "@types/jest": "*",
     "react": "*",
     "react-dom": "*",
     "typescript": "3.1.3"
