Turn on noUnusedLocals, noImplicitReturns, importsNotUsedAsValues: error, and isolatedModules (#2777)

src/common/__tests__/search-store.test.ts

@@ -23,6 +23,12 @@ import { SearchStore } from "../search-store";
 import { Console } from "console";
 import { stdout, stderr } from "process";
 
+jest.mock("electron", () => ({
+  app: {
+    getPath: () => "/foo",
+  },
+}));
+
 console = new Console(stdout, stderr);
 
 let searchStore: SearchStore = null;