How to generate correct prop types when the prop-types package is not explicitly imported?

Is there a recommended way to generate prop types when the prop-types package is not explicitly imported into each component? For example, in my project, PropTypes is provided as a global through webpack's providePlugin:

config: {
    plugins: [
        new ProvidePlugin({
               PropTypes: 'prop-types',
        }),
    ]
};

So PropTypes is available to any react component—even when it is not imported.

I see the resolveToModule util looks for the prop-types import, and if it is not found, we end up with custom prop types rather than their actual type, like string or bool. It seems I can create a handler to generate prop types even when the prop-types package is not explicitly imported, but is there an already existing handler or other way to do this that addresses this case?

Start by reading the resolveToModule util and the existing handlers for prop-types. Reproduce the case where webpack ProvidePlugin supplies PropTypes without an explicit prop-types import, then determine whether an existing handler supports it; done when generated output reports concrete types such as string or bool instead of custom.