webpack.conf.js

const ExtractTextPlugin = require('extract-text-webpack-plugin');

const extractLESS = new ExtractTextPlugin('stylesheets/[name].css');

module.exports = {
    context: __dirname,
    entry: "./App/index.js",
    output: {
        path: __dirname + "/dist",
        filename: "bundle.js"
    },
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /node_modules/,
                loader: 'babel-loader'
            },
            {
                test: /\.css$/,
                loader: ['style-loader', 'css-loader'],
            },
            {
                test: /\.less$/,
                loader: extractLESS.extract(['css-loader', 'less-loader']),
            },
            {
                test: /\.woff(2)?(\?v=[0-9]\.[0-9]\.[0-9])?$/,
                loader: "url-loader?limit=10000&mimetype=application/font-woff"
            },
            {
                test: /\.(ttf|eot|svg)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
                loader: "file-loader"
            }
        ]
    },
    plugins: [
        extractLESS
    ]
};