My webpack config

eslint.js

module.exports = {
  "env": {
    "browser": true,
    "commonjs": true,
    "es6": true,
    "node": true,
  },
  "extends": "eslint:recommended",
  "parserOptions": {
    "sourceType": "module",
  },
  "rules": {
    "comma-dangle": ["error", "always-multiline"],
    "indent": ["error", 4],
    "linebreak-style": ["error", "unix"],
    "quotes": ["error", "single"],
    "semi": ["error", "always"],
    "no-unused-vars": ["warn"],
    "no-console": 0,
  },
};

package.json

{
  "name": "static",
  "version": "0.1.0",
  "description": "New project",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "lint:js": "eslint . --cache"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "babel": "^6.23.0",
    "babel-core": "^6.23.1",
    "babel-loader": "^6.4.0",
    "babel-preset-es2015": "^6.22.0",
    "css-loader": "^0.27.0",
    "eslint": "^3.17.1",
    "eslint-loader": "^1.6.3",
    "extract-text-webpack-plugin": "^2.1.0",
    "file-loader": "^0.10.1",
    "less": "^2.7.2",
    "less-loader": "^3.0.0",
    "style-loader": "^0.13.2",
    "url-loader": "^0.5.8",
    "webpack": "^2.2.1",
    "webpack-dev-server": "^2.4.1"
  },
  "dependencies": {
    "bootstrap": "^3.3.7",
    "font-awesome": "^4.7.0",
    "jquery": "^1.12.4",
    "jquery-form": "^4.1.0",
    "jquery-validation": "^1.16.0",
    "jquery.cookie": "^1.4.1"
  }
}

webpack.config.js

onst path = require('path');
const webpack = require('webpack');
const ExtractTextPlugin = require("extract-text-webpack-plugin");
const vendorCSS = new ExtractTextPlugin('css/vendors.css');
const mainCSS = new ExtractTextPlugin('css/main.css');

function isExternal(module) {
    const userRequest = module.userRequest;

    if (typeof userRequest !== 'string') {
        return false;
    }

    return userRequest.indexOf('bower_components') >= 0 ||
        userRequest.indexOf('node_modules') >= 0 ||
        userRequest.indexOf('lib') >= 0;
}

module.exports = {
    devtool: 'source-map',
    entry: {
        main: "./js/index.js"
    },
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'js/[name].js'
    },
    module: {
        rules: [
            {
                enforce: "pre",
                test: /\.(js|jsx)$/,
                exclude: /node_modules/,
                loader: "eslint-loader"
            },
            {
                test: /\.(js|jsx)$/,
                loader: 'babel-loader',
                exclude: /(node_modules|bower_components)/,
                options: {
                    presets: ['es2015'],
                    sourceMap: true
                }
            },
            {
                test: /\.css$/,
                use: vendorCSS.extract({
                    use: {
                        loader: 'css-loader',
                        options: {
                            minimize: {discardComments: {removeAll: true}}
                        }
                    }
                }),
            },
            {
                test: /\.less$/,
                use: mainCSS.extract({
                    fallback: 'style-loader',
                    use: [
                        {
                            loader: 'css-loader',
                            options: {
                                minimize: {discardComments: {removeAll: true}},
                                sourceMap: true
                            }
                        },
                        'less-loader'
                    ],
                })
            },
            {
                test: /\.(woff2?|ttf|eot|svg|gif|png|jpg|jpeg)$/,
                use: 'file-loader?name=[name].[ext]&publicPath=../media/&outputPath=media/'
            }
        ]
    },
   plugins: [
        new webpack.optimize.CommonsChunkPlugin({
            name: 'vendors',
            minChunks: function (module) {
                return isExternal(module);
            }
        }),
        new webpack.ProvidePlugin({
            jQuery: 'jquery',
            $: 'jquery',
            jquery: 'jquery'
        }),
        vendorCSS,
        mainCSS,
        new webpack.optimize.UglifyJsPlugin({
            compress: {warnings: false},
            output: {comments: false},
            sourceMap: true
        })
    ]
};