webpack.config.js

module.exports = {
  //...
  resolve: {
    fallback: {
      // index: require.resolve("./node_modules/ws/index.js"),
      // buffer_util: require.resolve("./node_modules/ws/buffer-util.js"),
      // "permessage-deflate": require.resolve(
      //   "./node_modules/ws/permessage-deflate.js"
      // ),
      assert: require.resolve("assert"),
      buffer: require.resolve("buffer"),
      console: require.resolve("console-browserify"),
      constants: require.resolve("constants-browserify"),
      crypto: require.resolve("crypto-browserify"),
      domain: require.resolve("domain-browser"),
      events: require.resolve("events"),
      http: require.resolve("stream-http"),
      https: require.resolve("https-browserify"),
      os: require.resolve("os-browserify/browser"),
      path: require.resolve("path-browserify"),
      punycode: require.resolve("punycode"),
      process: require.resolve("process/browser"),
      querystring: require.resolve("querystring-es3"),
      stream: require.resolve("stream-browserify"),
      string_decoder: require.resolve("string_decoder"),
      sys: require.resolve("util"),
      timers: require.resolve("timers-browserify"),
      tty: require.resolve("tty-browserify"),
      url: require.resolve("url"),
      util: require.resolve("util"),
      vm: require.resolve("vm-browserify"),
      zlib: require.resolve("browserify-zlib"),
    },
  },
};