import React from "react"; import Document, { Html, Head, Main, NextScript } from "next/document"; import { Footer } from "../components/Footer"; import Fader from "../components/Fader"; import ReactGA from "react-ga"; import fs from "fs"; import path from "path"; class CustomNextHead extends Head { // TODO: This might not be needed if Next.js implements built-in support // https://github.com/zeit/next-plugins/issues/364 getCssLinks({ allFiles }) { return allFiles .filter((file) => file.endsWith(".css")) .map((file) => (