webpack.dev.js

const path = require('path')
const merge = require('webpack-merge')
const webpackCommon = require('./webpack.common')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const files = ['index', 'vertical', 'all']
const autoprefixer = require('autoprefixer')
const DEV_MODE = process.env.npm_lifecycle_event == 'start'

module.exports = merge(webpackCommon, {
  mode: 'development',
  devtool: 'eval-source-map',
  entry: {
    dragscroll: path.resolve(__dirname, 'public/js/docs.ts'),
  },
  plugins: [
    ...files.map((file) => {
      return new HtmlWebpackPlugin({
        filename: `${file}.html`,
        template: path.resolve(__dirname, `public/${file}.ejs`),
      })
    }),
    new MiniCssExtractPlugin({
      filename: `[name].css`,
    }),
  ],
  module: {
    rules: [
      {
        test: /\.(scss)/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
          },
          {
            loader: 'css-loader',
            options: {
              sourceMap: DEV_MODE,
            },
          },
          {
            loader: 'postcss-loader',
            options: {
              plugins: () => [autoprefixer()],
              sourceMap: DEV_MODE,
            },
          },
          {
            loader: 'sass-loader',
            options: {
              sourceMap: DEV_MODE,
            },
          },
        ],
      },
    ],
  },
  devServer: {
    inline: true,
    hot: true,
    contentBase: [path.resolve('build'), path.resolve('public')],
    open: true,
    compress: true,
    writeToDisk: true,
    watchOptions: {
      poll: true,
    },
  },
})