webpack externals are not complete

[gilamran]

Hi,
In our situation we use webpack to bundle the application code into a bundle, and the external packages (Like react) we load them using a script tag (CDN). We would like to mimic that also in our tests.
But when importing enzyme in our tests, it will bundle react and react-dom into the application bundle, even after we specifically mentioned them in our externals section.

To solve this, you have to add this to the externals:

    "react": 'React',
    "react-dom": 'ReactDOM',
    "react-dom/server": true,
    "react-dom/lib/ReactTestUtils": true

[blainekasten]

Could you throw up a PR for updating the docs?

[gilamran]

Done, #744

[gilamran]

I've updated the issue description to explain the situation in more detail.
The PR is not relevant anymore, a detailed explanation might be needed in the docs.

Here's a repo. to test the issue.
Tests are on the latest react 15.4.1

[ljharb]

I don't think this is relevant any more now that we're on v3.