init: reinitialize from gin-template

web/src/context/User/reducer.js

@@ -0,0 +1,21 @@
+export const reducer = (state, action) => {
+  switch (action.type) {
+    case 'login':
+      return {
+        ...state,
+        user: action.payload
+      };
+    case 'logout':
+      return {
+        ...state,
+        user: undefined
+      };
+
+    default:
+      return state;
+  }
+};
+
+export const initialState = {
+  user: undefined
+};