I’m using vitest to write some unit tests in my react app, and I’ve been wondering why we don’t just use the node_module packages when necessary directly instead of mocking them?

I have included the methods from packages directly in my test files and everything is working fine, but I wonder if they really are? and if not, why?

for example I’ve imported the redux Provider directly from the package here:

const { container } = render(
  <Provider store={store}>
    <MyComponent />
  </Provider>
);