diff --git a/src/mergeContent.js b/src/mergeContent.js
index e6ea57c..7b8448b 100644
--- a/src/mergeContent.js
+++ b/src/mergeContent.js
@@ -10,7 +10,7 @@ const mergeContent = ({ originalContent, additionalContent }) => {
     return JSON.stringify(mergedContent, null, 2);
   }
 
-  return `${originalContent}\n${additionalContent}`;
+  return `${originalContent}\n${additionalContent}`.trimLeft();
 };
 
 export default mergeContent;
diff --git a/src/templates/core/package.template.json b/src/templates/core/package.template.json
index df7b193..5e87d32 100644
--- a/src/templates/core/package.template.json
+++ b/src/templates/core/package.template.json
@@ -51,8 +51,10 @@
     "rollup-plugin-node-resolve": "^3.3.0",
     "rollup-plugin-uglify":"^3.0.0"
   },
-  "testPathIgnorePatterns": [
-    "<rootDir>/build/",
-    "<rootDir>/node_modules/"
-  ]
+  "jest": {
+    "testPathIgnorePatterns": [
+      "<rootDir>/build/",
+      "<rootDir>/node_modules/"
+    ]
+  }
 }
diff --git a/src/templates/react/package.json b/src/templates/react/package.json
index ad99ca2..28de1f7 100644
--- a/src/templates/react/package.json
+++ b/src/templates/react/package.json
@@ -51,10 +51,8 @@
       "src/**/*.{js,jsx}"
     ],
     "coveragePathIgnorePatterns": [
-      "/node_modules/"
-    ],
-    "testPathIgnorePatterns": [
-      "*.stories.{js,jsx}"
+      "/node_modules/",
+      "(.stories)\\.(jsx)$"
     ]
   }
 }