diff --git a/src/reducer.js b/src/reducer.js
index e69de29..e9a1861 100644
--- a/src/reducer.js
+++ b/src/reducer.js
@@ -0,0 +1,22 @@
+const initialState = {
+  good: 0,
+  ok: 0,
+  bad: 0
+}
+
+const counterReducer = (state = initialState, action) => {
+  console.log(action)
+  switch (action.type) {
+    case 'GOOD':
+      return state
+    case 'OK':
+      return state
+    case 'BAD':
+      return state
+    case 'ZERO':
+      return state
+  }
+  return state
+}
+
+export default counterReducer