const common = require('./webpack.common.js')
const merge = require('webpack-merge')
const path = require('path')
const webpack = require('webpack')
const CleanWebpackPlugin = require('clean-webpack-plugin')
const UglifyJSPlugin = require('uglifyjs-webpack-plugin')

module.exports = merge(common, {
  mode: 'production',
  output: {
    path: path.join(__dirname, 'dist'),
    publicPath: '/',
    filename: '[name].[chunkhash].js'
  },
  devtool: 'source-map',
  plugins: [
    new CleanWebpackPlugin({dir: ['dist'] }),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('production')
    }),
    new UglifyJSPlugin({
      sourceMap: true
    })
  ]
})