webpack.config.js

const InlineChunkHtmlPlugin = require("react-dev-utils/InlineChunkHtmlPlugin");
const HtmlWebpackPlugin = require("html-webpack-plugin");

const path = require("path");
const webpack = require("webpack");

module.exports = (env, argv) => ({
  mode: argv.mode === "production" ? "production" : "development",

  // This is necessary because Figma's 'eval' works differently than normal eval
  devtool: argv.mode === "production" ? false : "inline-source-map",

  entry: {
    ui: "./src/ui.tsx", // The entry point for your UI code
    code: "./src/code.ts", // The entry point for your plugin code
  },

  module: {
    rules: [
      // Converts TypeScript code to JavaScript
      {
        test: /\.tsx?$/,
        use: "ts-loader",
        exclude: /node_modules/,
      },

      // Enables including CSS by doing "import './file.css'" in your TypeScript code
      {
        test: /\.css$/,
        use: ["style-loader", "css-loader"],
      },
      // Allows you to use "<%= require('./file.svg') %>" in your HTML code to get a data URI
      // { test: /\.(png|jpg|gif|webp|svg|zip)$/, loader: [{ loader: 'url-loader' }] }
      {
        test: /\.svg/,
        type: "asset/inline",
      },
    ],
  },

  // Webpack tries these extensions for you if you omit the extension like "import './file'"
  resolve: { extensions: [".tsx", ".ts", ".jsx", ".js"] },

  output: {
    filename: "[name].js",
    path: path.resolve(__dirname, "dist"), // Compile into a folder called "dist"
  },

  // Tells Webpack to generate "ui.html" and to inline "ui.ts" into it
  plugins: [
    new webpack.DefinePlugin({
      global: {}, // Fix missing symbol error when running in developer VM
    }),
    new HtmlWebpackPlugin({
      inject: "body",
      template: "./src/ui.html",
      filename: "ui.html",
      chunks: ["ui"],
    }),
    new InlineChunkHtmlPlugin(HtmlWebpackPlugin, [/ui/]),
  ],
  watch: true,
});