webpack.dev.js

const path = require("path");
const common = require("./webpack.common");
const { merge } = require("webpack-merge");
const HtmlWebpackPlugin = require("html-webpack-plugin");

module.exports = merge(common, {
  mode: "development",
  output: {
    filename: "[name].bundle.js",
    path: path.resolve(__dirname, "dist"),
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: "./src/template.html",
    }),
  ],
  module: {
    rules: [
      {
        test: /\.scss$/,
        use: ["style-loader", "css-loader", "sass-loader"],
      },
    ],
  },
  devServer: {
    headers: {
      "Access-Control-Allow-Origin": "*", // replace "*" with your whitelisted domain
      "Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, PATCH, OPTIONS",
      "Access-Control-Allow-Headers": "*",
    },
  },
});