If you still want to use Apollo Boost in Node.js but need to polyfill the native fetch API of the browser, try out cross-fetch. I used it for my minimal example over here. And that’s how it can be used after installing it:
import 'cross-fetch/polyfill';
import ApolloClient from 'apollo-boost';
const client = new ApolloClient({
uri: 'https://api.domain.com/graphql',
});