Fix login/logout flow

js/src/apollo/user.ts

@@ -0,0 +1,25 @@
+export const currentUser = {
+  defaults: {
+    currentUser: {
+      __typename: 'CurrentUser',
+      id: null,
+      email: null,
+    },
+  },
+
+  resolvers: {
+    Mutation: {
+      updateCurrentUser: (_, { id, email }, { cache }) => {
+        const data = {
+          currentUser: {
+            id,
+            email,
+            __typename: 'CurrentUser',
+          },
+        };
+
+        cache.writeData({ data });
+      },
+    },
+  },
+};