next.config.js

const path = require('path')
const webpackConfig = require('./webpack.config')
const withMDX = require('@zeit/next-mdx')({
  extension: /\.mdx?$/
})
const withBundleAnalyzer = require("@zeit/next-bundle-analyzer")

module.exports = withBundleAnalyzer(withMDX({
  exportPathMap: async function (defaultPathMap) {
    return {
      '/': { page: '/mining' },
    }
  },
  pageExtensions: ['js', 'jsx', 'md', 'mdx'],
  webpack: (config, { buildId, dev, isServer, defaultLoaders }) => {
    config.resolve = webpackConfig.resolve
    return config
  },
  analyzeServer: ["server", "both"].includes(process.env.BUNDLE_ANALYZE),
  analyzeBrowser: ["browser", "both"].includes(process.env.BUNDLE_ANALYZE),
  bundleAnalyzerConfig: {
    server: {
      analyzerMode: 'static',
      reportFilename: './bundles/server.html'
    },
    browser: {
      analyzerMode: 'static',
      reportFilename: './bundles/client.html'
    }
  }
}))