webpack.config.js

const path = require("path");
const dist = path.resolve(__dirname, "dist");

const CopyWebpackPlugin = require("copy-webpack-plugin");
const WasmPackPlugin = require("@wasm-tool/wasm-pack-plugin");
const HtmlWebpackPlugin = require("html-webpack-plugin");

module.exports = {
  entry: "./js/bootstrap.js",
  output: { path: dist, filename: "bundle.js" },
  devServer: {
    contentBase: dist,
    disableHostCheck: true
  },
  mode: "development",
  devtool: "source-map",
  plugins: [
    new WasmPackPlugin({ crateDirectory: path.resolve(__dirname, "crate") }),
    new CopyWebpackPlugin([
      "index.html",
      "js/styles.css",
      "manifest.json",
      "assets/*"
    ]),
    new HtmlWebpackPlugin({ template: "index.html" })
  ],
  module: {
    rules: [
      {
        test: /\.(glsl|frag|vert)$/,
        use: "raw-loader",
        exclude: /node_modules/
      },
      {
        test: /\.(glsl|frag|vert)$/,
        use: "glslify-loader",
        exclude: /node_modules/
      },
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-env", "@babel/preset-react"],
            plugins: ["@babel/plugin-syntax-dynamic-import"]
          }
        }
      }
    ]
  }
};