docusuarus webpack 5 plugin to provide node polyfills

docusaurus.config.js

module.exports = {
   plugins: [require.resolve('./sitePlugin')],
}

docusuarusWebpack5Plugin.js

const webpack = require('webpack');
const NodePolyfillPlugin = require('node-polyfill-webpack-plugin');

module.exports = function (context, options) {
  return {
    name: 'custom-docusaurus-webpack-config-plugin',
    configureWebpack(config, isServer, utils) {
      return {
        resolve: {
          fallback: {
            fs: false,
          },
        },
        plugins: [
          new webpack.DefinePlugin({
            "process.versions.node": JSON.stringify(process.versions.node || "0.0.0"),
          }),
          new NodePolyfillPlugin(),
        ],
      };
    },
  };
};

Thanks, this did the trick for me. I just needed a few extra things:

1. I added const webpack = require('webpack'); as the first line.

2. I installed the to-arraybuffer NPM package.

Then my build completed successfully. I really appreciate the guidance.