webpack.production.config.js

const path = require("path");

module.exports = {
    entry: {
      btbtweet: "./React/index.js"
    },
    mode: "production",
    performance: {
        maxEntrypointSize: 5120000,
        maxAssetSize: 5120000
    },
    output: {
        path: __dirname + "/dist/js",
        filename: "[name].js"
    },
    devtool:false,
    module: {
        rules: [
          {
            test: /\.js|\.jsx$/,
            exclude: /(node_modules)/,
            use: {
              loader: 'babel-loader',
            },
          },
          {
            test: /\.css$/,
            use: ['style-loader', 'css-loader'],
          },
          {
            test: /\.(png|jpe?g|gif)$/i,
            use: [
              {
                loader: 'file-loader',
              },
            ],
          },
          {
            test: /\.svg/,
            use: {
              loader: 'svg-url-loader',
              options: {
                // make all svg images to work in IE
                iesafe: true,
              },
            },
          },
        ],
      },
    externals: {
        // require("jquery") is external and available
        //  on the global var jQuery
        jquery: "jQuery"
    }
};