const path = require('path');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');

module.exports = {
  entry: {
    app: ['babel-polyfill', './src/js/app.js']
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js'
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: [
          {
            loader: 'babel-loader',
            options: {
              presets: ['env']
            }
          }
        ]
      },
      {
        test: /\.sass$/,
        use: ExtractTextPlugin.extract({
          use: ['css-loader', 'sass-loader']
        })
      },
      {
        test: /\.(gif|png|jpe?g|svg)$/i,
        use: [
          "file-loader",
          {
            loader: "image-webpack-loader",
            options: {
              outputPath: 'img/',
              bypassOnDebug: true
            }
          }
        ]
      }
    ]
  },
  plugins: [
    new ExtractTextPlugin({filename: 'main.css'}),
    new HtmlWebpackPlugin({
      inject: true,
      hash: true,
      template: './src/index.html',
      filename: 'index.html'
    }),
    new CleanWebpackPlugin('dist', {} )
  ]
};