Stubbed sanity test

src/App.test.js

@@ -0,0 +1,11 @@
+import App from './App.js'
+
+describe('Top level exports', () => {
+  test('have not changed', () => {
+    const expectedExports = ['App'].sort()
+
+    const exports = true // Object.keys(OHIFViewer).sort()
+
+    expect(exports).toEqual(true)
+  })
+})