Add tests for node imports

.gitignore

@@ -1,6 +1,7 @@
 npm-debug.log
 
-/build/
+/build/node_modules/
+
 /docs/api/
 /website/build/
 node_modules/

build/__tests__/react-router-dom-test.js

@@ -0,0 +1,25 @@
+const expected = {
+  BrowserRouter: expect.any(Function),
+  Link: expect.any(Function),
+  // from react-router
+  Router: expect.any(Function),
+  Route: expect.any(Function),
+  Routes: expect.any(Function),
+  MemoryRouter: expect.any(Function),
+  Outlet: expect.any(Function),
+  useRoutes: expect.any(Function),
+  useParams: expect.any(Function),
+  useResolvedPath: expect.any(Function),
+  useOutlet: expect.any(Function),
+  useOutletContext: expect.any(Function),
+};
+
+describe("react-router-dom", () => {
+  it("requires", () => {
+    expect(require("react-router-dom")).toMatchObject(expected);
+  });
+
+  it("imports", () => {
+    return expect(import("react-router-dom")).resolves.toMatchObject(expected);
+  });
+});

build/__tests__/react-router-test.js

@@ -0,0 +1,22 @@
+const expected = {
+  Router: expect.any(Function),
+  Route: expect.any(Function),
+  Routes: expect.any(Function),
+  MemoryRouter: expect.any(Function),
+  Outlet: expect.any(Function),
+  useRoutes: expect.any(Function),
+  useParams: expect.any(Function),
+  useResolvedPath: expect.any(Function),
+  useOutlet: expect.any(Function),
+  useOutletContext: expect.any(Function),
+};
+
+describe("react-router", () => {
+  it("requires", () => {
+    expect(require("react-router")).toMatchObject(expected);
+  });
+
+  it("imports", () => {
+    return expect(import("react-router")).resolves.toMatchObject(expected);
+  });
+});

build/jest.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  testMatch: ["**/__tests__/*-test.[jt]s?(x)"]
+};

package.json

@@ -73,7 +73,8 @@
   },
   "jest": {
     "projects": [
-      "<rootDir>/packages/*"
+      "<rootDir>/packages/*",
+      "<rootDir>/build"
     ]
   },
   "filesize": {