webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

module.exports = {
    devServer: {
        port: '8080',
        hot: true,
        compress: true,
        contentBase: path.resolve(__dirname, './src'),
        watchContentBase: true,
        historyApiFallback: true,
        proxy: {
          '/login': {
            target: 'http://localhost:5000/'
          },
          '/signup': {
            target: 'http://localhost:5000/'
          },
          '/listings': {
            target: 'http://localhost:5000/'
          },
        }
    },
    entry: {
        popup: path.resolve(__dirname, "./src/index-popup.js"),
        options: path.resolve(__dirname, "./src/index-options.js"),
        foreground: path.resolve(__dirname, "./src/index-foreground.js"),
        login: path.resolve(__dirname, "./src/index-login.js"),
        signup: path.resolve(__dirname, "./src/index-signup.js"),
        dashboard: path.resolve(__dirname, "./src/index-dashboard.js")
    },
    output: {
        filename: '[name].bundle.js',
        path: path.resolve(__dirname, 'dist'),
        // publicPath: '/dist'
    },
    module: {
        rules: [
            {
                test: /\.jsx?/,
                exclude: /(node_modules|bower_components)/,
                use: [
                    {
                        loader: 'babel-loader',
                        options: {
                            presets: [
                                '@babel/preset-env',
                                '@babel/preset-react',
                                {
                                    'plugins': ['@babel/plugin-proposal-class-properties']
                                }
                            ]
                        }
                    }
                ]
            },
            {
                test: /\.html$/,
                use: ['html-loader']
            },
            {
              test: /\.css$/,
              // react-step-progress requires in the css styling in the node_modules folder
              // exclude: /node_modules/,
              use: ['style-loader', 'css-loader'],
            },
        ]
    },
    plugins: [
        new HtmlWebpackPlugin({
            filename: 'popup.html',
            template: 'src/popup.html',
            chunks: ['popup']
        }),
        new HtmlWebpackPlugin({
            filename: 'options.html',
            template: 'src/options.html',
            chunks: ['options']
        }),
        new HtmlWebpackPlugin({
            filename: 'foreground.html',
            template: 'src/foreground.html',
            chunks: ['foreground']
        }),
        new HtmlWebpackPlugin({
            filename: 'login.html',
            template: 'src/login.html',
            chunks: ['login']
        }),
        new HtmlWebpackPlugin({
            filename: 'signup.html',
            template: 'src/signup.html',
            chunks: ['signup']
        }),
        new HtmlWebpackPlugin({
            filename: 'dashboard.html',
            template: 'src/dashboard.html',
            chunks: ['dashboard']
        }),
        new CopyWebpackPlugin({
            patterns: [
                { from: 'src/manifest.json', to: '[name].[ext]' },
                { from: 'src/background.js', to: '[name].[ext]' },
                { from: 'src/inject_script.js', to: '[name].[ext]' },
                { from: 'src/assets/*.png', to: '[name].[ext]' }
            ]
        }),
        new CleanWebpackPlugin()
    ],
    resolve: {
        extensions: ['.js', '.jsx'],
    }
}