update webpack config

mobx/webpack.config.js → mobx/webpack.config.mjs

@@ -1,7 +1,10 @@
-const path = require("path");
-const webpack = require("webpack");
-const TerserPlugin = require("terser-webpack-plugin");
-const CacheBusterCommentPlugin = require("../startup-helper/BabelCacheBuster.mjs");
+import path from "path";
+import { fileURLToPath } from "url";
+import TerserPlugin from "terser-webpack-plugin";
+import CacheBusterCommentPlugin from "../startup-helper/BabelCacheBuster.mjs";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
 
 function config({ filename, minify, target }) {
   return {
@@ -49,9 +52,9 @@ function config({ filename, minify, target }) {
   };
 }
 
-module.exports = [
+export default [
   config({ filename: "bundle.es6.min.js", minify: true, target: "es6" }),
   config({ filename: "bundle.es6.js", minify: false, target: "es6" }),
   config({ filename: "bundle.es5.min.js", minify: true, target: "es5" }),
   config({ filename: "bundle.es5.js", minify: false, target: "es5" }),
-];
+];