const { VueLoaderPlugin } = require('vue-loader');
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = (env, argv) => {
  const isDevelopment = argv.mode === 'development';
  
  return {
    entry: './src/main.js',
    output: {
      filename: 'bundle.js',
      path: path.resolve(__dirname, 'dist'),
      clean: true
    },
    module: {
      rules: [
        {
          test: /\.vue$/,
          loader: 'vue-loader'
        },
        {
          test: /\.js$/,
          loader: 'babel-loader',
          exclude: /node_modules/
        },
        {
          test: /\.css$/,
          use: [
            'style-loader',
            'css-loader'
          ]
        }
      ]
    },
    plugins: [
      new VueLoaderPlugin(),
      new HtmlWebpackPlugin({
        template: './index.html',
        filename: 'index.html'
      })
    ],
    devServer: {
      static: {
        directory: path.join(__dirname, 'dist'),
      },
      hot: true,
      open: true,
      historyApiFallback: true,
      port: 8080
    },
    resolve: {
      alias: {
        '@': path.resolve(__dirname, 'src'),
        'vue': '@vue/runtime-dom'
      },
      extensions: ['.js', '.vue', '.json']
    },
    devtool: isDevelopment ? 'eval-source-map' : 'source-map'
  };
};