Enzyme Unit tests with Webpack Externals

问题

I'm currently testing a component that relies on a an external script with webpack externals.

DBPanel.js:

import React, { PureComponent } from 'react';
import $ from 'jquery';

And the webpack externals file looks like this:

webpack.config.js:

externals: {
    jquery: "jQuery",
    Materialize: "Materialize"
}

When I import the the file in my test import DBPanel from '../components/DBPanel'; I get this error:

Error: Cannot find module 'jquery'

来源：https://stackoverflow.com/questions/45724728/enzyme-unit-tests-with-webpack-externals