webpack + exports-loader + whatwg-fetch + Chrome 42+ issue

gistfile1.js

/* webpack loader:
{
	test:    /fetch.js$/,
	loaders: ["exports?fetch=window.fetch,Headers=window.Headers,Request=window.Request,Response=window.Response"]
}
*/

import { fetch, Headers } from "whatwg-fetch";

let headers = new Headers();
headers.append("Accept", "application/json");

let body = JSON.stringify({});

fetch( // Uncaught TypeError: Illegal invocation
	"localhost",
	{
		method:  "POST",
		headers,
		body
	}
);

How do I fix that issue?