NextチュートリアルをTypeScriptに変換中に生じた`Can't resolve 'fs'`エラー

[1/4] Resolving packages...
Module not found: Can't resolve 'fs'
> 1 | import fs from "fs";
  2 | import path from "path";
  3 | import matter from "gray-matter";
  4 |

Import trace for requested module:
./pages/index.tsx

https://nextjs.org/docs/messages/module-not-found
Could not find files for / in .next/build-manifest.json
Could not find files for / in .next/build-manifest.json

module.exports = {
  webpack: (config, { isServer }) => {
    if (!isServer) {
      config.resolve.fallback.fs = false;
      config.resolve.fallback.child_process = false;
      config.resolve.fallback.net = false;
      config.resolve.fallback.dns = false;
      config.resolve.fallback.tls = false;
    }
    return config;
  },
};