const path = require('path');
const merge = require('webpack-merge');
const common = require('./webpack.common.config.js');
const FriendlyErrorsWebpackPlugin = require('friendly-errors-webpack-plugin');

const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin', null, 2);

const webpack_config = merge(common, {
  mode: 'development',
  output: {
    filename: 'js/[name].[hash:8].bundle.js',
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader', 'postcss-loader'],
      },
      {
        test: /\.less$/,
        use: ['style-loader', 'css-loader', 'postcss-loader', 'less-loader'],
      },
    ],
  },
  devServer: {
    contentBase: path.resolve(__dirname, '../dist'),
    open: true,
    port: 9000,
    compress: true,
    hot: true,
    quiet: true,
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: 'public/index.html',
      inject: 'body',
      hash: false,
    }),
    new webpack.HotModuleReplacementPlugin(),
    new FriendlyErrorsWebpackPlugin({
      // 运行成功
      compilationSuccessInfo: {
        messages: ['You application is running here http://localhost:9000'],
        notes: [
          'Some additionnal notes to be displayed unpon successful compilation',
        ],
      },
      // 运行错误
      onErrors: function (severity, errors) {
        //您可以收听插件转换和优先级的错误
        //严重性可以是'错误'或'警告'
      },
      //是否每次编译之间清除控制台
      //默认为true
      clearConsole: true,

      //添加格式化程序和变换器(见下文)
      additionalFormatters: [],
      additionalTransformers: [],
    }),
  ],
});

module.exports = webpack_config;