diff --git a/packages/react-scripts/scripts/utils/verifyTypeScriptSetup.js b/packages/react-scripts/scripts/utils/verifyTypeScriptSetup.js
index fa4b5c8716e..cb1e10ef47e 100644
--- a/packages/react-scripts/scripts/utils/verifyTypeScriptSetup.js
+++ b/packages/react-scripts/scripts/utils/verifyTypeScriptSetup.js
@@ -18,7 +18,7 @@ const immer = require('react-dev-utils/immer').produce;
 const globby = require('react-dev-utils/globby').sync;
 
 function writeJson(fileName, object) {
-  fs.writeFileSync(fileName, JSON.stringify(object, null, 2) + os.EOL);
+  fs.writeFileSync(fileName, JSON.stringify(object, null, 2).replace(/\n/g, os.EOL) + os.EOL);
 }
 
 function verifyNoTypeScript() {