✔️ NEXT: Why is webpack broke?

typings/index.d.ts

@@ -6,7 +6,6 @@ declare var globalConfig: { [k: string]: string };
 
 interface Rollbar {
   error?(msg: string | object): void;
-  global(config: object): void;
   configure(object: object): object;
 }
 

webpack/redux/__tests__/version_tracker_middleware_tests.ts

@@ -1,4 +1,22 @@
+import { fakeState } from "../../__test_support__/fake_state";
+import { versionChangeMiddleware } from "../version_tracker_middleware";
+import { buildResourceIndex, fakeDevice } from "../../__test_support__/resource_index_builder";
+import { MiddlewareAPI } from "redux";
+import { Everything } from "../../interfaces";
+
 describe("version tracker middleware", () => {
   it("Calls Rollbar.configure", () => {
+    const before = window.Rollbar;
+    window.Rollbar = { configure: jest.fn() };
+    const state = fakeState();
+    state.resources = buildResourceIndex([fakeDevice()]);
+    type Mw = MiddlewareAPI<Everything>;
+    const fakeStore: Partial<Mw> = {
+      getState: () => state
+    };
+    versionChangeMiddleware.fn(fakeStore as Mw)(jest.fn())({ type: "ANY", payload: {} });
+    expect(window.Rollbar.configure)
+      .toHaveBeenCalledWith({ "payload": { "fbos": "NONE" } });
+    window.Rollbar = before;
   });
 });