cosmos-hackathon-frontend/webpack.config.js

const path = require('path');
const webpack = require('webpack');
const CopyWebpackPlugin = require('copy-webpack-plugin');

module.exports = {
    // use index.js as entrypoint
    entry: {
        app: ['./index.js']
    },
    devServer: {
        contentBase: './bundle',
        hot: true
    },
    mode: "development",
    module: {
        rules: [
            {
                test: /\.css$/,
                use: ['style-loader', 'css-loader']
            }
        ]
    },
    // build all code in `bundle.js` in `bundle` directory
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'bundle')
    },
    plugins: [
        // create `index.html` with imported `bundle.js`
        new CopyWebpackPlugin([{
            from: './*.html'
        }]),
        new webpack.HotModuleReplacementPlugin()
    ]
};