1 files changed, 7 insertions, 0 deletions
diff --git a/app/assets/javascripts/mr_notes/stores/mutations.js b/app/assets/javascripts/mr_notes/stores/mutations.js
new file mode 100644
index 00000000000..8175aa9488f
--- /dev/null
+++ b/app/assets/javascripts/mr_notes/stores/mutations.js
@@ -0,0 +1,7 @@
+import types from './mutation_types';
+
+export default {
+  [types.SET_ACTIVE_TAB](state, tab) {
+    Object.assign(state, { activeTab: tab });
+  },
+};