Skip package-lock.json and yarn.lock in node_modules #431 (#485)

Signed-off-by: Keith Zantow <kzantow@gmail.com>

test/integration/test-fixtures/yarn-lock/node_modules/merge-objects/lib/merge-objects.js

@@ -0,0 +1,42 @@
+/**
+ * Merge two objects and concatenate arrays that are values of the same object key
+ *
+ * @author Oleksii Shevchenko <shevaroller@gmail.com> (http://shevaroller.me)
+ * @since  6 September 2015
+ */
+
+var mergeObjects;
+
+mergeObjects = function(object1, object2) {
+  var key;
+
+  // concatenate not objects into arrays
+  if (typeof object1 !== 'object') {
+    if (typeof object2 !== 'object') {
+      return [object1, object2];
+    }
+    return object2.concat(object1);
+  }
+  if (typeof object2 !== 'object') {
+    return object1.concat(object2);
+  }
+
+  // merge object2 into object1
+  for (key in object2) {
+    if ((Array.isArray(object1[key])) && (Array.isArray(object2[key]))) {
+      // concatenate arrays that are values of the same object key
+      object1[key] = object1[key].concat(object2[key]);
+    } else if (typeof object1[key] === 'object' && typeof object2[key] === 'object') {
+      // deep merge object2 into object1
+      object1[key] = mergeObjects(object1[key], object2[key]);
+    } else {
+      object1[key] = object2[key];
+    }
+  }
+  return object1;
+};
+
+/**
+ * Exports Module mergeObjects
+ */
+module.exports = mergeObjects;