Adopt JS standards once userinfo data is in frontend (#1930)

client/src/reducers/userInfo.js

@@ -0,0 +1,26 @@
+const UserInfo = (state = {}, action) => {
+  switch (action.type) {
+    case "initial data load start":
+      return {
+        ...state,
+        loading: true,
+        error: null,
+      };
+    case "userInfo load complete":
+      return {
+        ...state,
+        loading: false,
+        error: null,
+        ...action.userInfo,
+      };
+    case "initial data load error":
+      return {
+        ...state,
+        error: action.error,
+      };
+    default:
+      return state;
+  }
+};
+
+export default UserInfo;