webpack.common.js

const path = require("path");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");

module.exports = {
  entry: {
    "babel-polyfill": "babel-polyfill",
    app: "./src/index.js",
  },
  plugins: [
    // new CleanWebpackPlugin(['dist/*']) for < v2 versions of CleanWebpackPlugin
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: path.join(__dirname, "src", "index.html"),
    }),
    new MiniCssExtractPlugin({
      filename: "[name].css",
      chunkFilename: "[id].css",
    }),
  ],
  output: {
    filename: "[name].bundle.js",
    path: path.resolve(__dirname, "dist"),
    publicPath: "/",
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        loader: "babel-loader",
        exclude: /(node_modules)/,
      },
      // 스타일
      {
        test: /\.css$/i,
        use: ["style-loader", "css-loader"],
      },
      {
        test: /\.(sa|sc)ss$/,
        use: [
          /* devMode ? 'style-loader' : */
          MiniCssExtractPlugin.loader,
          "css-loader",
          "sass-loader",
        ],
      },
      // 이미지
      {
        test: /\.(png|svg|jpg|jpeg|gif)$/i,
        type: "asset/resource",
      },
    ],
  },
};