diff --git a/packages/react-router-dom/node-main.js b/packages/react-router-dom/node-main.js
index 6d3626f085..ed05df1215 100644
--- a/packages/react-router-dom/node-main.js
+++ b/packages/react-router-dom/node-main.js
@@ -1,5 +1,7 @@
 /* eslint-env node */
-module.exports =
-  process.env.NODE_ENV === "production"
-    ? require("./umd/react-router-dom.production.min.js")
-    : require("./umd/react-router-dom.development.js");
+
+if (process.env.NODE_ENV === "production") {
+  module.exports = require("./umd/react-router-dom.production.min.js");
+} else {
+  module.exports = require("./umd/react-router-dom.development.js");
+}
diff --git a/packages/react-router/node-main.js b/packages/react-router/node-main.js
index 511dbb2760..972b9aba7d 100644
--- a/packages/react-router/node-main.js
+++ b/packages/react-router/node-main.js
@@ -1,5 +1,7 @@
 /* eslint-env node */
-module.exports =
-  process.env.NODE_ENV === "production"
-    ? require("./umd/react-router.production.min.js")
-    : require("./umd/react-router.development.js");
+
+if (process.env.NODE_ENV === "production") {
+  module.exports = require("./umd/react-router.production.min.js");
+} else {
+  module.exports = require("./umd/react-router.development.js");
+}